What are the different types of locknuts?

Raptor Supplies offers locknuts with nylon inserts, jam nuts and bearings.

How do locknuts with nylon inserts work?

These locknuts have a nylon insert at the top that creates tension between the nut and the mating component's threads. When threaded onto a shaft or rod, the nut will spin freely until the threads on the host part engage the nylon insert. The mating shaft's threads will displace the nylon insert and create resistance. This resistance prevents the locknut from being moved accidentally. After repeated removal & installation, the insert can wear and become less effective. Replace the nut if it needs to be removed during component disassembly for maximum holding power.

How to install a locknut with nylon inserts?

The locking end of a prevailing torque locknut is installed in a manner such that it engages the mating threads. When installing, the nut should be threaded on freely until the host component's mating threads engage the nylon insert.

How do jam nuts work?

Jam nuts use opposing friction against another jam nut or a standard hex nut to lock into place on a threaded shaft or rod. Tighten the first jam nut and then the second nut, which is tightened or jammed against the first nut. It is difficult to properly torque both nuts in this configuration, making it unsuitable for critical applications involving heavy loads.

How do bearing locknuts work?

Bearing locknuts, like castellated nuts, require a positive locking action to lock in place. Bearing locknuts and bearing lock washers are used to achieve locking. The machined grooves in the nut's face provide a mating surface for the lock washer's tangs to fold into, locking both components in place.

Locknuts | Raptor Supplies United Kingdom

MICRO PLASTICS -

Plain Grade 6/6 Nylon Standard Hex Self Threading Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Temp. Range	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	0700256LN	#2-56	3/16"	9/64"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£7.22	25
B	0700632LN	#6-32	5/16"	13/64"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£7.45	25
C	0700832SLN	#8-32	1/3"	15/64"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£6.02	25
D	0700832LN	#8-32	1/3"	15/64"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£7.22	25
E	0701024SLN	#10-24	23/64"	1/4"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£5.69	25
F	0701024LN	#10-24	23/64"	1/4"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£5.55	25
G	0701032SLN	#10-32	23/64"	1/4"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£4.54	25
H	0725020SLN	1/4"-20	27/64"	9/32"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£8.28	25
I	0725020LN	1/4"-20	27/64"	9/32"	-40°F to +185°F	Self Threading	Standard Hex	Nylon	Grade 6/6	£8.26	25

APPROVED VENDOR -

Plain Class 10 Steel Standard Hex Nylon Insert Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Hardness	Nut Type	Type	Material	Class	Price (inc. VAT)
A	5GAZ4	M30 x 3.5	46 mm	30 mm	Rockwell C27-C35	Nylon Insert	Standard Hex	Steel	Class 10	£9.37
A	5GAZ6	M42 x 4.5	65 mm	42 mm	Rockwell C27-C35	Nylon Insert	Standard Hex	Steel	Class 10	£28.15
B	5GAZ7	M48 x 5	75 mm	48 mm	Rockwell C27-C35	Nylon Insert	Standard Hex	Steel	Class 10	£53.35

GRAINGER -

Zinc Plated Grade A Steel Standard Hex Center Lock Distorted Thread Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Class	Price (inc. VAT)	Pkg. Qty.
A	CLNI20750-025P	3/4"-10	1 1/8"	41/64"	Center Lock Distorted Thread	Standard Hex Center Lock	Steel	Grade A	Not Applicable	£27.10	25
B	CLNI20870-025P	7/8"-9	1 5/16"	49/64"	Center Lock Distorted Thread	Standard Hex Center Lock	Steel	Grade A	Not Applicable	£60.30	25
C	CLNI20560-050P	9/16"-12	7/8"	31/64"	Center Lock Distorted Thread	Standard Hex Center Lock	Steel	Grade A	Not Applicable	£16.77	50

FOREVERBOLT -

NL-19 Grade 18-8 Stainless Steel Flange Hex Serrated Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	FBFHN632P50	#6-32	15/16"	11/64"	Serrated	Flange	Stainless Steel	Grade 18-8	£43.18	50
B	FBFHN832P50	#8-32	11/32"	11/64"	Serrated	Flange	Stainless Steel	Grade 18-8	£43.87	50
C	FBFHN1024P50	#10-24	3/8"	7/32"	Serrated	Flange	Stainless Steel	Grade 18-8	£45.12	50
D	FBFHN1032P50	#10-32	3/8"	7/32"	Serrated	Flange	Stainless Steel	Grade 18-8	£45.12	50
E	FBFHN1420P50	#14-20	7/16"	15/64"	Serrated	Flange	Stainless Steel	Grade 18-8	£43.78	50
F	FBFHN1213P25	1/2"-13	3/4"	29/64"	Serrated	Flange	Stainless Steel	Grade 18-8	£62.13	25
G	FBFHN3816P25	3/8"-16	9/16"	11/32"	Serrated	Flange	Stainless Steel	Grade 18-8	£37.24	25
H	FBFHN51618P50	5/16"-18	1/2"	9/32"	Serrated	Flange	Stainless Steel	Grade 18-8	£57.26	50

APPROVED VENDOR -

Yellow Zinc Plated Grade 8 Steel Standard Hex Nylon Insert Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Hardness	Temp. Range	Nut Type	Type	Material	Price (inc. VAT)	Pkg. Qty.
A	U12450.150.0001	1 1/2"-6	2 1/4"	1.667"	-	-	Nylon Insert	Standard Hex	Steel	£93.43	5
B	U12422.150.0002	1 1/2"-12	2 1/4"	1.667"	-	-	Nylon Insert	Standard Hex	Steel	£174.84	5
B	U12450.125.0001	1 1/4"-7	1 7/8"	1.428"	-	-	Nylon Insert	Standard Hex	Steel	£54.04	5
C	U12422.125.0002	1 1/4"-12	1 7/8"	1.428"	Rockwell C26-C34	-	Nylon Insert	Standard Hex	Steel	£35.18	5
B	U12450.112.0001	1 1/8"-7	1 11/16"	1 9/32"	-	-	Nylon Insert	Standard Hex	Steel	£28.13	5
B	U12422.112.0002	1 1/8"-12	1 11/16"	1 9/32"	-	-	Nylon Insert	Standard Hex	Steel	£50.43	5
D	3HDT3	1 3/8"-6	2"	1 37/64"	Rockwell C26-C36	-	Nylon Insert	Standard Hex	Steel	£19.57	1
E	3HDT4	1 3/8"-12	2"	1 37/64"	Rockwell C26-C36	-	Nylon Insert	Standard Hex	Steel	£19.12	1
B	U12450.100.0001	1"-8	1 1/2"	51/64"	Rockwell C26-C34	-	Nylon Insert	Standard Hex	Steel	£12.85	5
B	U12422.101.0002	1"-14	1 1/2"	13/16"	Rockwell C26-C34	-	Nylon Insert	Standard Hex	Steel	£16.65	5
B	U12450.050.0001	1/2"-13	3/4"	39/64"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£7.32	25
F	U12422.050.0002	1/2"-20	3/4"	39/64"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£10.30	25
G	B12450.025.0001	1/4"-20	7/16"	-	-	-	Nylon Insert	Standard Hex	Steel	£206.79	2
H	U12450.025.0001	1/4"-20	7/16"	5/16"	Rockwell C24-C32	-	Nylon Insert	Standard Hex	Steel	£7.22	100
B	U12422.025.0002	1/4"-28	7/16"	15/64"	Rockwell C24-C32	-	Nylon Insert	Standard Hex	Steel	£8.45	100
I	B12450.075.0001	3/4"-10	1 1/8"	-	-	-	Nylon Insert	Standard Hex	Steel	-	180	RFQ
B	U12450.075.0001	3/4"-10	1 1/8"	57/64"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£8.41	10
J	U12422.075.0002	3/4"-16	1 1/8"	57/64"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£7.58	10
B	U12450.037.0001	3/8"-16	9/16"	15/32"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£8.31	50
K	12P649	3/8"-16	9/16"	29/64"	Rockwell C24-C32	-0°F to +250°F	Nylon Insert	Standard Hex	Steel	£241.47	2
L	U12422.037.0002	3/8"-24	9/16"	15/32"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£6.27	50
M	B12450.062.0001	5/8"-11	15/16"	-	-	-	Nylon Insert	Standard Hex	Steel	-	260	RFQ
B	U12450.062.0001	5/8"-11	15/16"	49/64"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£4.76	10
N	13D994	5/8"-18	-	-	-	-	Nylon Insert	Standard Hex	Steel	£187.03	540
O	U12422.062.0002	5/8"-18	15/16"	49/64"	-	-58°F to +302°F	Nylon Insert	Standard Hex	Steel	£5.79	10

APPROVED VENDOR -

Zinc Plated Grade 5 Steel Standard Hex Nylon Insert Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Hardness	Class	Nut Type	Type	Material	Price (inc. VAT)	Pkg. Qty.
A	U12348.100.0001	1"-8	1 1/2"	1.124"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£14.05	5
B	5TJD6	1/2"-13	3/4"	1 9/32"	Rockwell C32	Class 5	Nylon Insert	Standard Hex	Steel	£29.94	100
C	U12348.050.0001	1/2"-13	3/4"	3/5"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£4.93	25
D	U12353.050.0002	1/2"-20	3/4"	3/5"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£13.01	25
E	U12348.025.0001	1/4"-20	7/16"	5/16"	Rockwell C32	Not Applicable	Nylon Insert	Standard Hex	Steel	£6.90	100
F	B12348.025.0001	1/4"-20	7/16"	-	-	-	Nylon Insert	Standard Hex	Steel	£222.37	2
G	U12353.025.0002	1/4"-28	7/16"	5/16"	Rockwell C32	Not Applicable	Nylon Insert	Standard Hex	Steel	£12.46	100
H	B12348.075.0001	3/4"-10	1 1/8"	-	-	-	Nylon Insert	Standard Hex	Steel	£133.04	180
G	U12348.075.0001	3/4"-10	1 1/8"	0.888"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£9.13	10
I	12P623	3/4"-10	1 1/16"	7/8"	Rockwell 32	-	Nylon Insert	Standard Hex	Steel	£8.92	20
J	U12353.075.0002	3/4"-16	1 1/8"	0.888"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£6.18	10
G	U12348.037.0001	3/8"-16	9/16"	15/32"	Rockwell C28	Not Applicable	Nylon Insert	Standard Hex	Steel	£5.16	50
K	B12348.037.0001	3/8"-16	9/16"	-	-	-	Nylon Insert	Standard Hex	Steel	-	1	RFQ
L	U12353.037.0002	3/8"-24	9/16"	15/32"	Rockwell C28	Not Applicable	Nylon Insert	Standard Hex	Steel	£29.60	50
G	U12348.062.0001	5/8"-11	15/16"	0.765"	Rockwell C28	Not Applicable	Nylon Insert	Standard Hex	Steel	£5.11	10
M	B12348.062.0001	5/8"-11	15/16"	-	-	-	Nylon Insert	Standard Hex	Steel	£192.46	260
N	B12353.062.0002	5/8"-18	15/16"	-	-	-	Nylon Insert	Standard Hex	Steel	-	260	RFQ
O	U12353.062.0002	5/8"-18	15/16"	0.765"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£8.18	10
P	U12348.031.0001	5/16"-18	1/2"	11/32"	Rockwell C32	Not Applicable	Nylon Insert	Standard Hex	Steel	£7.12	100
Q	B12348.031.0001	5/16"-18	1/2"	-	-	-	Nylon Insert	Standard Hex	Steel	-	1800	RFQ
R	U12353.031.0002	5/16"-24	1/2"	11/32"	Rockwell C32	Not Applicable	Nylon Insert	Standard Hex	Steel	£14.35	100
G	U12348.087.0001	7/8"-9	1 5/16"	0.999"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£5.22	5
S	U12348.043.0001	7/16"-14	11/16"	3/4"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£4.67	25
T	U12353.043.0002	7/16"-20	11/16"	3/4"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£6.88	25
G	U12348.056.0001	9/16"-12	7/8"	21/32"	-	Not Applicable	Nylon Insert	Standard Hex	Steel	£33.73	25

FABORY -

Zinc Plated Grade 8 Steel Standard Hex Top Lock Distorted Thread Locknuts

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Style	Model	Thread Size	Hex Width	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	B12950.112.0002	1 1/8"-12	1 11/16"	Top Lock Distorted Thread	Standard Hex Top Lock	Steel	Grade 8	-	55	RFQ
B	B12950.075.0002	3/4"-16	1 1/8"	Top Lock Distorted Thread	Standard Hex Top Lock	Steel	Grade 8	£176.97	190
C	B12950.037.0002	3/8"-24	9/16"	Top Lock Distorted Thread	Standard Hex Top Lock	Steel	Grade 8	-	1450	RFQ

APPROVED VENDOR -

Zinc Plated Grade 2 Steel Flange Hex Nylon Insert Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Class	Price (inc. VAT)	Pkg. Qty.
A	4CAN8	#10-24	3/8"	1/4"	Nylon Insert	Flange	Steel	Grade 2	Not Applicable	£19.16	100
B	4CAN9	#10-32	3/8"	1/4"	Nylon Insert	Flange	Steel	Grade 2	Not Applicable	£16.94	100
C	4CAP4	1/2"-13	3/4"	9/16"	Nylon Insert	Flange	Steel	Grade 2	Not Applicable	£13.92	25
A	4CAP1	1/4"-20	7/16"	5/16"	Nylon Insert	Flange	Steel	Grade 2	Not Applicable	£15.98	100
D	4CAP6	3/4"-10	1 1/8"	13/16"	Nylon Insert	Flange	Steel	Grade 2	Not Applicable	£16.71	5
E	4CAP3	3/8"-16	9/16"	7/16"	Nylon Insert	Flange	Steel	Grade 2	Not Applicable	£14.84	50
A	4CAP2	5/16"-18	1/2"	3/8"	Nylon Insert	Flange	Steel	Grade 2	Not Applicable	£17.00	100

FLEXLOC -

Cadmium Plated Grade 2 Steel Standard Light Hex Flexible Top Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	21FA-632	#6-32	5/16"	0.18"	Flexible Top	Top Lock	Steel	Grade 2	£121.33	100
B	21FA-832	#8-32	3/8"	0.243"	Flexible Top	Top Lock	Steel	Grade 2	£118.74	100
C	21FA-1024	#10-24	3/8"	0.243"	Flexible Top	Top Lock	Steel	Grade 2	£155.73	100
D	31FAF-1608	1"-8	1 7/16"	1.134"	Flexible Top	Top Lock	Steel	Grade 2	£213.44	5
E	21FC-820	1/2"-20	3/4"	0.602"	Flexible Top	Top Lock	Steel	Grade 2	£344.15	50
F	21FC-428	1/4"-28	7/16"	8/25"	Flexible Top	Top Lock	Steel	Grade 2	£134.04	100
G	31FC-1216	3/4"-16	1 1/16"	0.884"	Flexible Top	Top Lock	Steel	Grade 2	£165.22	10
H	21FAF-616	3/8"-16	9/16"	0.462"	Flexible Top	Top Lock	Steel	Grade 2	£136.05	50
I	21FC-624	3/8"-24	9/16"	0.462"	Flexible Top	Top Lock	Steel	Grade 2	£271.33	100
J	31FAF-1011	5/8"-11	15/16"	0.759"	Flexible Top	Top Lock	Steel	Grade 2	£133.98	15
K	31FC-1018	5/8"-18	15/16"	0.759"	Flexible Top	Top Lock	Steel	Grade 2	£193.45	20
L	21FAF-518	5/16"-18	1/2"	0.353"	Flexible Top	Top Lock	Steel	Grade 2	£167.38	100
M	21FC-524	5/16"-24	1/2"	0.353"	Flexible Top	Top Lock	Steel	Grade 2	£249.50	100
N	31FC-1414	7/8"-14	1 1/4"	1.009"	Flexible Top	Top Lock	Steel	Grade 2	£134.41	5
O	21FAF-714	7/16"-14	5/8"	0.462"	Flexible Top	Top Lock	Steel	Grade 2	£172.41	25
P	20FAF-714	7/16"-14	5/8"	0.462"	Flexible Top	Top Lock	Steel	Grade 2	£144.70	25
Q	21FC-720	7/16"-20	5/8"	0.462"	Flexible Top	Top Lock	Steel	Grade 2	£336.60	50

FLEXLOC -

Plain Grade 2 Steel Standard Light Hex Flexible Top Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	20FC-1032	#10-32	3/8"	0.243"	Flexible Top	Top Lock	Steel	Grade 2	£62.99	100
B	30FC-1614	1"-14	1 7/16"	1.134"	Flexible Top	Top Lock	Steel	Grade 2	£161.51	5
C	20FC-820	1/2"-20	3/4"	0.602"	Flexible Top	Top Lock	Steel	Grade 2	£145.84	25
D	20FA-420	1/4"-20	7/16"	0.29"	Flexible Top	Top Lock	Steel	Grade 2	£137.86	100
E	20FC-428	1/4"-28	7/16"	8/25"	Flexible Top	Top Lock	Steel	Grade 2	£122.52	100
F	30FC-1216	3/4"-16	1 1/16"	0.884"	Flexible Top	Top Lock	Steel	Grade 2	£135.84	10
G	20FC-624	3/8"-24	9/16"	0.462"	Flexible Top	Top Lock	Steel	Grade 2	£204.25	100
H	30FAF-1011	5/8"-11	15/16"	0.759"	Flexible Top	Top Lock	Steel	Grade 2	£194.70	20
I	30FC-1018	5/8"-18	15/16"	0.759"	Flexible Top	Top Lock	Steel	Grade 2	£218.14	20
J	20FAF-518	5/16"-18	1/2"	0.353"	Flexible Top	Top Lock	Steel	Grade 2	£217.55	100
K	20FA-518	5/16"-18	9/16"	0.321"	Flexible Top	Top Lock	Steel	Grade 2	£181.21	100
L	20FC-524	5/16"-24	1/2"	0.353"	Flexible Top	Top Lock	Steel	Grade 2	£217.89	100
M	20FC-720	7/16"-20	5/8"	0.462"	Flexible Top	Top Lock	Steel	Grade 2	£157.09	25

FABORY -

Zinc Plated Grade A Steel Flange Hex Serrated Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	U11610.016.0001	#8-32	11/32"	13/64"	Serrated	Flange	Steel	Grade A	£11.07	100
B	U11610.019.0001	#10-24	3/8"	7/32"	Serrated	Flange	Steel	Grade A	£7.42	100
C	U11610.021.0001	#12-24	7/16"	15/64"	Serrated	Flange	Steel	Grade A	£23.62	100
D	U11610.050.0001	1/2"-13	3/4"	29/64"	Serrated	Flange	Steel	Grade A	£14.85	50
E	U11612.050.0001	1/2"-20	3/4"	29/64"	Serrated	Flange	Steel	Grade A	£20.92	50
F	B11610.025.0001	1/4"-20	7/16"	15/64"	Serrated	Flange	Steel	Grade A	£155.01	2
G	U11610.025.0001	1/4"-20	7/16"	15/64"	Serrated	Flange	Steel	Grade A	£6.14	100
H	U11612.025.0001	1/4"-28	7/16"	15/64"	Serrated	Flange	Steel	Grade A	£8.31	100
I	U11610.075.0001	3/4"-10	1 1/8"	43/64"	Serrated	Flange	Steel	Grade A	£10.85	10
J	U11612.075.0001	3/4"-16	1 1/8"	43/64"	Serrated	Flange	Steel	Grade A	£27.12	10
K	B11610.037.0001	3/8"-16	9/16"	11/32"	Serrated	Flange	Steel	Grade A	£151.16	1
L	U11610.037.0001	3/8"-16	9/16"	11/32"	Serrated	Flange	Steel	Grade A	£11.92	100
M	U11612.037.0001	3/8"-24	9/16"	11/32"	Serrated	Flange	Steel	Grade A	£17.99	100
N	B11610.062.0001	5/8"-11	15/16"	9/16"	Serrated	Flange	Steel	Grade A	-	225	RFQ
O	U11610.062.0001	5/8"-11	15/16"	9/16"	Serrated	Flange	Steel	Grade A	£21.44	25
P	U11612.062.0001	5/8"-18	15/16"	9/16"	Serrated	Flange	Steel	Grade A	£22.37	25
Q	U11610.031.0001	5/16"-18	1/2"	9/32"	Serrated	Flange	Steel	Grade A	£8.30	100
R	B11610.031.0001	5/16"-18	1/2"	9/32"	Serrated	Flange	Steel	Grade A	-	1	RFQ
S	U11612.031.0001	5/16"-24	1/2"	9/32"	Serrated	Flange	Steel	Grade A	£10.72	100
T	U11610.087.0001	7/8"-9	1 3/16"	25/32"	Serrated	Flange	Steel	Grade A	£144.89	10
U	B11610.043.0001	7/16"-14	11/16"	25/64"	Serrated	Flange	Steel	Grade A	£132.48	750
V	U11610.043.0001	7/16"-14	11/16"	25/64"	Serrated	Flange	Steel	Grade A	£8.67	50
W	U11612.043.0001	7/16"-20	11/16"	25/64"	Serrated	Flange	Steel	Grade A	£14.53	50
X	U11610.056.0001	9/16"-12	7/8"	1/2"	Serrated	Flange	Steel	Grade A	£50.32	25

GRAINGER -

Zinc Plated Class 8 Steel Flange Hex Serrated Locknuts

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Style	Model	Thread Size	Hex Width	Nut Height	Washer Outside Dia.	Nut Type	Type	Material	Class	Price (inc. VAT)	Pkg. Qty.
A	M11610.040.0001	M4 x 0.7	7 mm	4.5 mm	9.6 mm	Serrated	Flange	Steel	Class 8	£4.43	100
B	M11610.050.0001	M5 x 0.8	8 mm	5 mm	11.8 mm	Serrated	Flange	Steel	Class 8	£4.66	100
C	M11610.060.0001	M6 x 1	10 mm	6 mm	14.2 mm	Serrated	Flange	Steel	Class 8	£12.17	100
D	M11610.080.0001	M8 x 1.25	13 mm	8 mm	17.9 mm	Serrated	Flange	Steel	Class 8	£13.76	100
E	M11610.100.0001	M10 x 1.5	15 mm	10 mm	21.8 mm	Serrated	Flange	Steel	Class 8	£23.55	100
F	M11610.120.0001	M12 x 1.75	18 mm	12 mm	26 mm	Serrated	Flange	Steel	Class 8	£46.06	100
G	M11610.140.0001	M14 x 2	21 mm	14 mm	29.9 mm	Serrated	Flange	Steel	Class 8	£35.98	50
H	M11610.160.0001	M16 x 2	24 mm	16 mm	34.5 mm	Serrated	Flange	Steel	Class 8	£46.39	50

DISC-LOCK -

Zinc Plated Grade 8 Steel 2-Piece Wedge Locknuts

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B

C

Style	Model	Thread Size	Hex Width	Washer Outside Dia.	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	NSC 205-01-565	1/2"-13	3/4"	1"	2 Piece Wedge	Wedge	Steel	Grade 8	£127.21	50
B	NSF 205-01-565	1/2"-20	3/4"	1"	2 Piece Wedge	Wedge	Steel	Grade 8	£130.36	50
C	NSF 204-01-565	7/16"-20	3/4"	1"	2 Piece Wedge	Wedge	Steel	Grade 8	£133.62	50

FOREVERBOLT -

NL-19 Grade A2 Stainless Steel Flange Hex Serrated Locknuts

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B

C

D

E

Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	FBFHNM5P100	M5 x 0.08	11 mm	8 mm	Serrated	Flange	Stainless Steel	Grade A2	£88.56	100
B	FBFHNM8P25	M5 x 8	18 mm	13 mm	Serrated	Flange	Stainless Steel	Grade A2	£35.21	25
C	FBFHNM6P25	M6 x 1	14.8 mm	10 mm	Serrated	Flange	Stainless Steel	Grade A2	£31.13	25
D	FBFHNM10P25	M10 x 1.5	22 mm	10 mm	Serrated	Flange	Stainless Steel	Grade A2	£46.63	25
E	FBFHNM12P10	M12 x 1.75	26.7 mm	18 mm	Serrated	Flange	Stainless Steel	Grade A2	£42.32	10

APPROVED VENDOR -

Plain Grade 2H Steel Standard Hex Slotted Castle Locknuts

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B

Style	Model	Thread Size	Hex Width	Nut Height	Hardness	Slot Depth	Slot Width	Nut Type	Type	Price (inc. VAT)	Pkg. Qty.
A	352538G	1 3/4"-5	2 3/4"	1 23/32"	Rockwell B95-C35	1 6/25"	13/25"	Slotted Castle	Standard Hex	£198.72	5
B	352308G	1"-8	1 5/8"	63/64"	Rockwell C24-C35	18/25"	0.3"	Slotted Castle	Standard Hex	£46.97	5
A	352228G	3/4"-10	1 1/4"	47/64"	Rockwell C24-C35	0.49"	6/25"	Slotted Castle	Standard Hex	£41.58	10
A	352188G	5/8"-11	1 1/16"	39/64"	Rockwell C24-C35	2/5"	6/25"	Slotted Castle	Standard Hex	£106.35	25
A	352258G	7/8"-9	1 7/16"	55/64"	Rockwell C24-C35	0.62"	6/25"	Slotted Castle	Standard Hex	£49.92	10

APPROVED VENDOR -

Yellow Zinc Plated Grade 8 Steel Conical Top Lock Distorted Thread Locknuts

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B

C

D

Style	Model	Thread Size	Hex Width	Nut Height	Hardness	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	4VPL2	1"-8	1 1/2"	7/8"	Rockwell C26-C34	Top Lock Distorted Thread	Conical Top Lock	Steel	Grade 8	£493.90	200
B	4VPK4	3/4"-10	1 1/8"	21/32"	Rockwell C26-C34	Top Lock Distorted Thread	Conical Top Lock	Steel	Grade 8	£554.88	500
C	4VPK6	5/8"-11	15/16"	35/64"	Rockwell C24-C32	Top Lock Distorted Thread	Conical Top Lock	Steel	Grade 8	£658.51	800
D	4VPL3	7/8"-9	1 5/16"	49/64"	Rockwell C26-C34	Top Lock Distorted Thread	Conical Top Lock	Steel	Grade 8	£472.34	300

APPROVED VENDOR -

Plain Grade 2 Steel Standard Hex Nylon Insert Locknuts

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B

C

D

E

Style	Model	Thread Size	Hex Width	Nut Height	Hardness	Temp. Range	Nut Type	Type	Material	Price (inc. VAT)
A	4FHZ6	#2-12	3 1/8"	2 13/32"	Rockwell C32	-0°F to +250°F	Nylon Insert	Standard Hex	Steel	£130.71
B	4FHZ3	1 3/4"-5	2 3/4"	2 5/16"	Rockwell C32	-0°F to +250°F	Nylon Insert	Standard Hex	Steel	£36.57
C	4FHZ4	1 3/4"-12	2 3/4"	2 5/16"	Rockwell C32	-0°F to +250°F	Nylon Insert	Standard Hex	Steel	£38.91
D	4FHZ9	2 1/2"-4	4"	3 9/64"	Rockwell C32	-0°F to +250°F	Nylon Insert	Standard Hex	Steel	£176.29
E	4FHZ8	2 1/4"-12	3 1/2"	2 13/16"	Rockwell C32	-0°F to +250°F	Nylon Insert	Standard Hex	Steel	£147.40
B	4FHZ5	2"-4 1/2	3 1/8"	2 13/32"	Rockwell C32	-0°F to +250°F	Nylon Insert	Standard Hex	Steel	£41.15

APPROVED VENDOR -

Zinc Plated Grade 18-8 Steel Standard Hex With External Lock Nut with Lock Washers

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Style	Model	Thread Size	Hex Width	Nut Height	Washer Outside Dia.	Hardness	Grade	Nut Type	Type	Price (inc. VAT)	Pkg. Qty.
A	KEPI0-40-100P	#4-40	1/4"	7/64"	3/32"	Rockwell B68-C32	Grade 2	With External Tooth Lock Washer	Standard Hex With External Tooth Washer	£5.81	100
B	KEPI0-60-100P	#6-32	5/16"	9/64"	3/32"	Rockwell B68-C32	Grade 2	With External Tooth Lock Washer	Standard Hex With External Tooth Washer	£7.40	100
C	KEPFI-100-100P	#10-32	3/8"	1/8"	13/32"	Rockwell B68-C32	Grade 18-8	With External Tooth Lock Washer	Standard Hex With External Tooth Washer	£7.11	100

APPROVED VENDOR -

Zinc Plated Grade 2 Steel Standard Hex with External Tooth Lock Nut with Lock Washers

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B

C

D

E

Style	Model	Thread Size	Hex Width	Nut Height	Washer Outside Dia.	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	4CAJ9	1/4"-28	7/16"	15/64"	1/2"	With External Tooth Lock Washer	Standard Hex With External Tooth Lock Washer	Steel	Grade 2	£15.10	100
B	4CAK3	3/8"-16	9/16"	25/64"	0.656"	With External Tooth Lock Washer	Standard Hex With External Tooth Lock Washer	Steel	Grade 2	£33.59	100
C	4CAK4	3/8"-24	9/16"	25/64"	0.656"	With External Tooth Lock Washer	Standard Hex With External Tooth Lock Washer	Steel	Grade 2	£37.67	100
D	4CAK1	5/16"-18	1/2"	21/64"	0.578"	With External Tooth Lock Washer	Standard Hex With External Tooth Lock Washer	Steel	Grade 2	£28.45	100
E	4CAK2	5/16"-24	1/2"	21/64"	0.578"	With External Tooth Lock Washer	Standard Hex With External Tooth Lock Washer	Steel	Grade 2	£21.85	100

FLEXLOC -

Plain Grade 18-8 Stainless Steel Standard Heavy Hex Flexible Top Locknuts

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C

Style	Model	Thread Size	Hex Width	Nut Height	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	50FA-813	1/2"-13	13/16"	0.509"	Flexible Top	Top Lock	Stainless Steel	Grade 18-8	£291.84	10
B	50FAC-420	1/4"-20	1/2"	0.29"	Flexible Top	Top Lock	Stainless Steel	Grade 18-8	£10.40	25
C	50FA-518	5/16"-18	9/16"	0.321"	Flexible Top	Top Lock	Stainless Steel	Grade 18-8	£285.51	25

APPROVED VENDOR -

Waxed Grade 18-8 Stainless Steel Cap Hex Nylon Insert Locknuts

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B

Style	Model	Thread Size	Hex Width	Nut Height	Temp. Range	Nut Type	Type	Material	Grade	Price (inc. VAT)	Pkg. Qty.
A	4CAD7	#8-32	11/32"	23/64"	-0°F to +250°F	Nylon Insert	Cap Hex	Stainless Steel	Grade 18-8	£11.02	20
B	4CAE1	1/4"-20	7/16"	31/64"	-0°F to +250°F	Nylon Insert	Cap Hex	Stainless Steel	Grade 18-8	£12.74	10

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Locknuts

Plain Grade 6/6 Nylon Standard Hex Self Threading Locknuts

Plain Class 10 Steel Standard Hex Nylon Insert Locknuts

Zinc Plated Grade A Steel Standard Hex Center Lock Distorted Thread Locknuts

NL-19 Grade 18-8 Stainless Steel Flange Hex Serrated Locknuts

Yellow Zinc Plated Grade 8 Steel Standard Hex Nylon Insert Locknuts

Zinc Plated Grade 5 Steel Standard Hex Nylon Insert Locknuts

Zinc Plated Grade 8 Steel Standard Hex Top Lock Distorted Thread Locknuts

Zinc Plated Grade 2 Steel Flange Hex Nylon Insert Locknuts

Cadmium Plated Grade 2 Steel Standard Light Hex Flexible Top Locknuts

Plain Grade 2 Steel Standard Light Hex Flexible Top Locknuts

Zinc Plated Grade A Steel Flange Hex Serrated Locknuts

Zinc Plated Class 8 Steel Flange Hex Serrated Locknuts

Zinc Plated Grade 8 Steel 2-Piece Wedge Locknuts

NL-19 Grade A2 Stainless Steel Flange Hex Serrated Locknuts

Plain Grade 2H Steel Standard Hex Slotted Castle Locknuts

Yellow Zinc Plated Grade 8 Steel Conical Top Lock Distorted Thread Locknuts

Plain Grade 2 Steel Standard Hex Nylon Insert Locknuts

Zinc Plated Grade 18-8 Steel Standard Hex With External Lock Nut with Lock Washers

Zinc Plated Grade 2 Steel Standard Hex with External Tooth Lock Nut with Lock Washers

Plain Grade 18-8 Stainless Steel Standard Heavy Hex Flexible Top Locknuts

Waxed Grade 18-8 Stainless Steel Cap Hex Nylon Insert Locknuts

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