Locknuts

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Locknuts are designed to keep fasteners in place in sheet metals and similar surfaces. Raptor Supplies offers a wide range of locknuts including check nuts, castle nuts, hex locknuts...Read more

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Yellow Zinc Plated Grade C Steel Standard Hex Top Lock Distorted Thread Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessTemp. RangeNut TypeTypeMaterialPrice (inc. VAT)Pkg. Qty.
A3XTP31"-81 1/2"7/8"Rockwell C26-C34-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£38.4910
BB12920.100.00011"-81 1/2"---Top Lock Distorted ThreadStandard Hex Top LockSteel£421.1380
C3XTP41"-141 1/2"7/8"Rockwell C26-C34-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£89.2510
DB12920.050.00011/2"-133/4"---Top Lock Distorted ThreadStandard Hex Top LockSteel-625
RFQ
C3XTP13/4"-101 1/8"21/32"Rockwell C26-C34-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£33.4820
EB12920.075.00013/4"-101 1/8"---Top Lock Distorted ThreadStandard Hex Top LockSteel£395.10190
F3XTN95/8"-1115/16"35/64"Rockwell C26-C34-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£25.3525
G3XTP27/8"-91 5/16"49/64"Rockwell C26-C34-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£26.0210
DISC-LOCK -

Zinc Plated Class 10 Steel 2-Piece Wedge Locknuts

StyleModelThread SizeHex WidthNut HeightWasher Outside Dia.Nut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
ANMC 203-01-565M10 x 1.515 mm11 mm20 mm2 Piece WedgeWedgeSteelNon Graded£117.0150
BNMC 205-01-565M12 x 1.7519 mm17.5 mm25 mm2 Piece WedgeWedgeSteelNon Graded£121.3950
CNMC 207-01-565M16 x 224 mm21 mm32 mm2 Piece WedgeWedgeSteelNon Graded£163.0650
APPROVED VENDOR -

Plain Class 10 Steel Standard Hex Nylon Insert Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessNut TypeTypeMaterialClassPrice (inc. VAT)
A5GAZ4M30 x 3.546 mm30 mmRockwell C27-C35Nylon InsertStandard HexSteelClass 10£9.37
A5GAZ6M42 x 4.565 mm42 mmRockwell C27-C35Nylon InsertStandard HexSteelClass 10£28.15
B5GAZ7M48 x 575 mm48 mmRockwell C27-C35Nylon InsertStandard HexSteelClass 10£53.35
FLEXLOC -

Plain Grade 2 Steel Thin Heavy Hex Flexible Top Locknuts

StyleModelThread SizeHex WidthNut HeightNut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
A20FK-8131/2"-1313/16"0.328"Flexible TopTop Lock JamSteelGrade 2£241.82100
B20FKC-4201/4"-201/2"7/32"Flexible TopTop Lock JamSteelGrade 2£114.00125
C20FK-6163/8"-165/8"0.282"Flexible TopTop Lock JamSteelGrade 2£151.79100
D30FK-10115/8"-111"0.399"Flexible TopTop Lock JamSteelGrade 2£261.3850
E20FK-5185/16"-189/16"17/64"Flexible TopTop Lock JamSteelGrade 2£254.52100
F30FK-14097/8"-91 5/16"0.477"Flexible TopTop Lock JamSteelGrade 2£292.8520
G20FK-7147/16"-143/4"0.328"Flexible TopTop Lock JamSteelGrade 2£241.10100
FLEXLOC -

Plain Grade 2 Steel Thin Light Hex Flexible Top Locknuts

StyleModelThread SizeHex WidthNut HeightNut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
A20FK-832#8-323/8"3/16"Flexible TopTop Lock JamSteelGrade 2£421.50200
B20FK-1024#10-243/8"3/16"Flexible TopTop Lock JamSteelGrade 2£123.35200
C20FK-1032#10-323/8"3/16"Flexible TopTop Lock JamSteelGrade 2£172.75200
D30FK-24121 1/2"-122 3/16"0.884"Flexible TopTop Lock JamSteelGrade 2£485.835
E30FK-16121"-121 7/16"0.571"Flexible TopTop Lock JamSteelGrade 2£339.0615
F30FK-16141"-181 7/16"0.571"Flexible TopTop Lock JamSteelGrade 2£267.4115
G20FKF-8131/2"-133/4"0.328"Flexible TopTop Lock JamSteelGrade 2£242.1875
H20FK-8201/2"-203/4"1/8"Flexible TopTop Lock JamSteelGrade 2£231.6075
I20FK-4201/4"-207/16"7/32"Flexible TopTop Lock JamSteelGrade 2£126.55200
J20FK-4281/4"-287/16"7/32"Flexible TopTop Lock JamSteelGrade 2£155.83200
K30FKF-12103/4"-101 1/16"0.415"Flexible TopTop Lock JamSteelGrade 2£271.1435
L30FK-12163/4"-161 1/16"0.415"Flexible TopTop Lock JamSteelGrade 2£261.5235
M20FKF-6163/8"-169/16"0.282"Flexible TopTop Lock JamSteelGrade 2£191.64150
N20FK-6243/8"-249/16"0.282"Flexible TopTop Lock JamSteelGrade 2£319.68150
O30FKF-10115/8"-1115/16"0.399"Flexible TopTop Lock JamSteelGrade 2£489.0450
P30FK-10185/8"-1815/16"0.399"Flexible TopTop Lock JamSteelGrade 2£278.6050
Q20FKF-5185/16"-181/2"17/64"Flexible TopTop Lock JamSteelGrade 2£149.87150
R20FK-5245/16"-241/2"17/64"Flexible TopTop Lock JamSteelGrade 2£161.65150
S30FK-14147/8"-141 1/4"15/32"Flexible TopTop Lock JamSteelGrade 2£251.6920
T20FK-7207/16"-205/8"0.328"Flexible TopTop Lock JamSteelGrade 2£234.8875
FLEXLOC -

Cadmium Plated Grade 2 Steel Standard Light Hex Flexible Top Locknuts

StyleModelThread SizeHex WidthNut HeightNut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
A21FA-632#6-325/16"0.18"Flexible TopTop LockSteelGrade 2£140.00100
B21FA-832#8-323/8"0.243"Flexible TopTop LockSteelGrade 2£118.74100
C21FA-1024#10-243/8"0.243"Flexible TopTop LockSteelGrade 2£155.73100
D31FAF-16081"-81 7/16"1.134"Flexible TopTop LockSteelGrade 2£240.125
E21FC-8201/2"-203/4"0.602"Flexible TopTop LockSteelGrade 2£344.1550
F21FC-4281/4"-287/16"8/25"Flexible TopTop LockSteelGrade 2£134.04100
G31FC-12163/4"-161 1/16"0.884"Flexible TopTop LockSteelGrade 2£165.2210
H21FAF-6163/8"-169/16"0.462"Flexible TopTop LockSteelGrade 2£136.0550
I21FC-6243/8"-249/16"0.462"Flexible TopTop LockSteelGrade 2£271.33100
J31FAF-10115/8"-1115/16"0.759"Flexible TopTop LockSteelGrade 2£154.6015
K31FC-10185/8"-1815/16"0.759"Flexible TopTop LockSteelGrade 2£223.2120
L21FAF-5185/16"-181/2"0.353"Flexible TopTop LockSteelGrade 2£167.38100
M21FC-5245/16"-241/2"0.353"Flexible TopTop LockSteelGrade 2£249.50100
N31FC-14147/8"-141 1/4"1.009"Flexible TopTop LockSteelGrade 2£134.415
O20FAF-7147/16"-145/8"0.462"Flexible TopTop LockSteelGrade 2£144.7025
P21FAF-7147/16"-145/8"0.462"Flexible TopTop LockSteelGrade 2£172.4125
Q21FC-7207/16"-205/8"0.462"Flexible TopTop LockSteelGrade 2£336.6050
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Zinc Plated Grade C Steel Standard Hex Top Lock Distorted Thread Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessTemp. RangeNut TypeTypeMaterialPrice (inc. VAT)Pkg. Qty.
AU12910.100.00011"-81 1/2"7/8"Rockwell C24-32-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£13.141
BU12950.101.00021"-141 1/2"7/8"Rockwell C24-32-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£11.755
CB12910.075.00013/4"-101 1/8"---Top Lock Distorted ThreadStandard Hex Top LockSteel£201.45190
DSLFI80751-020P3/4"-161 1/8"25/64"--Top Lock Distorted ThreadStandard Hex Top LockSteel£42.9620
EB12910.037.00013/8"-169/16"---Top Lock Distorted ThreadStandard Hex Top LockSteel£181.411
FB12910.062.00015/8"-1115/16"---Top Lock Distorted ThreadStandard Hex Top LockSteel£205.69310
GU12910.056.00019/16"-127/8"1/2"Rockwell C24-32-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£21.051
HU12950.056.00029/16"-187/8"1/2"Rockwell C24-32-0°F to +450°FTop Lock Distorted ThreadStandard Hex Top LockSteel£21.731
FABORY -

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

StyleModelThread SizeHex WidthNut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AB12950.112.00021 1/8"-121 11/16"Top Lock Distorted ThreadStandard Hex Top LockSteelGrade 8-55
RFQ
BB12950.075.00023/4"-161 1/8"Top Lock Distorted ThreadStandard Hex Top LockSteelGrade 8£176.97190
CB12950.037.00023/8"-249/16"Top Lock Distorted ThreadStandard Hex Top LockSteelGrade 8-1450
RFQ
FABORY -

Zinc Plated Grade A Steel Flange Hex Serrated Locknuts

StyleModelThread SizeHex WidthNut HeightNut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AU11610.016.0001#8-3211/32"13/64"SerratedFlangeSteelGrade A£13.861
BU11610.019.0001#10-243/8"7/32"SerratedFlangeSteelGrade A£7.42100
CU11610.021.0001#12-247/16"15/64"SerratedFlangeSteelGrade A£29.691
DU11610.050.00011/2"-133/4"29/64"SerratedFlangeSteelGrade A£14.8550
EU11612.050.00011/2"-203/4"29/64"SerratedFlangeSteelGrade A£26.131
FB11610.025.00011/4"-207/16"15/64"SerratedFlangeSteelGrade A£155.012
GU11610.025.00011/4"-207/16"15/64"SerratedFlangeSteelGrade A£6.14100
HU11612.025.00011/4"-287/16"15/64"SerratedFlangeSteelGrade A£10.391
IU11610.075.00013/4"-101 1/8"43/64"SerratedFlangeSteelGrade A£10.8510
JU11612.075.00013/4"-161 1/8"43/64"SerratedFlangeSteelGrade A£34.031
KU11610.037.00013/8"-169/16"11/32"SerratedFlangeSteelGrade A£11.92100
LB11610.037.00013/8"-169/16"11/32"SerratedFlangeSteelGrade A£151.161
MU11612.037.00013/8"-249/16"11/32"SerratedFlangeSteelGrade A£22.441
NU11610.062.00015/8"-1115/16"9/16"SerratedFlangeSteelGrade A£21.4425
OB11610.062.00015/8"-1115/16"9/16"SerratedFlangeSteelGrade A-225
RFQ
PU11612.062.00015/8"-1815/16"9/16"SerratedFlangeSteelGrade A£22.3725
QB11610.031.00015/16"-181/2"9/32"SerratedFlangeSteelGrade A-1
RFQ
RU11610.031.00015/16"-181/2"9/32"SerratedFlangeSteelGrade A£10.131
SU11612.031.00015/16"-241/2"9/32"SerratedFlangeSteelGrade A£10.72100
TU11610.087.00017/8"-91 3/16"25/32"SerratedFlangeSteelGrade A£182.661
UB11610.043.00017/16"-1411/16"25/64"SerratedFlangeSteelGrade A£132.48750
VU11610.043.00017/16"-1411/16"25/64"SerratedFlangeSteelGrade A£8.6750
WU11612.043.00017/16"-2011/16"25/64"SerratedFlangeSteelGrade A£14.5350
XU11610.056.00019/16"-127/8"1/2"SerratedFlangeSteelGrade A£63.351
GRAINGER -

Zinc Plated Class 8 Steel Flange Hex Serrated Locknuts

StyleModelThread SizeHex WidthNut HeightWasher Outside Dia.Nut TypeTypeMaterialClassPrice (inc. VAT)Pkg. Qty.
AM11610.040.0001M4 x 0.77 mm4.5 mm9.6 mmSerratedFlangeSteelClass 8£4.43100
BM11610.050.0001M5 x 0.88 mm5 mm11.8 mmSerratedFlangeSteelClass 8£4.66100
CM11610.060.0001M6 x 110 mm6 mm14.2 mmSerratedFlangeSteelClass 8£15.251
DM11610.080.0001M8 x 1.2513 mm8 mm17.9 mmSerratedFlangeSteelClass 8£13.76100
EM11610.100.0001M10 x 1.515 mm10 mm21.8 mmSerratedFlangeSteelClass 8£23.55100
FM11610.120.0001M12 x 1.7518 mm12 mm26 mmSerratedFlangeSteelClass 8£46.06100
GM11610.140.0001M14 x 221 mm14 mm29.9 mmSerratedFlangeSteelClass 8£35.9850
HM11610.160.0001M16 x 224 mm16 mm34.5 mmSerratedFlangeSteelClass 8£46.3950
DISC-LOCK -

Zinc Plated Grade 8 Steel 2-Piece Wedge Locknuts

StyleModelThread SizeHex WidthWasher Outside Dia.Nut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
ANSC 205-01-5651/2"-133/4"1"2 Piece WedgeWedgeSteelGrade 8£127.2150
BNSF 205-01-5651/2"-203/4"1"2 Piece WedgeWedgeSteelGrade 8£130.3650
CNSF 204-01-5657/16"-203/4"1"2 Piece WedgeWedgeSteelGrade 8£133.6250
MICRO PLASTICS -

Plain Grade 6/6 Nylon Standard Hex Self Threading Locknuts

StyleModelThread SizeHex WidthNut HeightTemp. RangeNut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
A0700256LN#2-563/16"9/64"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£7.2225
B0700632LN#6-325/16"13/64"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£8.3825
C0700832SLN#8-321/3"15/64"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£6.0225
D0700832LN#8-321/3"15/64"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£7.2225
E0701024LN#10-2423/64"1/4"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£5.5525
F0701024SLN#10-2423/64"1/4"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£5.6925
G0701032SLN#10-3223/64"1/4"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£4.5425
H0725020LN1/4"-2027/64"9/32"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£8.2625
I0725020SLN1/4"-2027/64"9/32"-40°F to +185°FSelf ThreadingStandard HexNylonGrade 6/6£9.5625
APPROVED VENDOR -

Plain Grade 2H Steel Standard Hex Slotted Castle Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessSlot DepthSlot WidthNut TypeTypePrice (inc. VAT)Pkg. Qty.
A352538G1 3/4"-52 3/4"1 23/32"Rockwell B95-C351 6/25"13/25"Slotted CastleStandard Hex£198.725
B352308G1"-81 5/8"63/64"Rockwell C24-C3518/25"0.3"Slotted CastleStandard Hex£46.975
A352228G3/4"-101 1/4"47/64"Rockwell C24-C350.49"6/25"Slotted CastleStandard Hex£41.5810
A352188G5/8"-111 1/16"39/64"Rockwell C24-C352/5"6/25"Slotted CastleStandard Hex£106.3525
A352258G7/8"-91 7/16"55/64"Rockwell C24-C350.62"6/25"Slotted CastleStandard Hex£49.9210
APPROVED VENDOR -

Zinc Plated Grade 2 Steel Swivel Flange Hex Top Lock Distorted Thread Locknuts

StyleModelThread SizeHex WidthNut HeightWasher Outside Dia.HardnessNut TypeTypeMaterialPrice (inc. VAT)Pkg. Qty.
A4RXT81/4"-207/16"15/64"0.578"Rockwell 45Top Lock Distorted ThreadSwivel Flange HexSteel£350.296
B4RXT93/8"-169/16"11/32"0.734"Rockwell 45Top Lock Distorted ThreadSwivel Flange HexSteel£291.672
C4RXU15/16"-181/2"9/32"0.656"Rockwell 45Top Lock Distorted ThreadSwivel Flange HexSteel£308.974
FOREVERBOLT -

NL-19 Grade A4 Stainless Steel Flange Hex Serrated Locknuts

StyleModelThread SizeHex WidthNut HeightNut TypeTypeMaterialGradePrice (inc. VAT)Pkg. Qty.
AFB3FHNM6P50M6 x 114.8 mm10 mmSerratedFlangeStainless SteelGrade A4£91.8550
BFB3FHNM8P25M8 x 1.2518 mm13 mmSerratedFlangeStainless SteelGrade A4£74.9025
CFB3FHNM10P10M10 x 1.522 mm10 mmSerratedFlangeStainless SteelGrade A4£61.1710
DFB3FHNM12P10M12 x 1.7526.7 mm18 mmSerratedFlangeStainless SteelGrade A4£75.8410
APPROVED VENDOR -

Plain Brass Standard Hex Nylon Insert Locknuts

StyleModelThread SizeHex WidthNut HeightTemp. RangeNut TypeTypeMaterialClassPrice (inc. VAT)Pkg. Qty.
A4FHX41/2"-133/4"19/32"-0°F to +250°FNylon InsertStandard HexBrassNot Applicable£20.375
B4FHX11/4"-207/16"5/16"-0°F to +250°FNylon InsertStandard HexBrassNot Applicable£19.0725
C4FHX33/8"-169/16"29/64"-0°F to +250°FNylon InsertStandard HexBrassNot Applicable£18.3110
A4FHX55/8"-1115/16"3/4"-0°F to +250°FNylon InsertStandard HexBrassNot Applicable£18.931
D4FHX25/16"-181/2"11/32"-0°F to +250°FNylon InsertStandard HexBrassNot Applicable£23.5325
APPROVED VENDOR -

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

StyleModelThread SizeHex WidthNut HeightWasher Outside Dia.HardnessGradeNut TypeTypePrice (inc. VAT)Pkg. Qty.
AKEPI0-40-100P#4-401/4"7/64"3/32"Rockwell B68-C32Grade 2With External Tooth Lock WasherStandard Hex With External Tooth Washer£5.81100
BKEPI0-60-100P#6-325/16"9/64"3/32"Rockwell B68-C32Grade 2With External Tooth Lock WasherStandard Hex With External Tooth Washer£7.40100
CKEPFI-100-100P#10-323/8"1/8"13/32"Rockwell B68-C32Grade 18-8With External Tooth Lock WasherStandard Hex With External Tooth Washer£7.11100
APPROVED VENDOR -

Zinc Plated Class 10 Steel Standard Hex Top Lock Distorted Thread Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessTemp. RangeNut TypeTypeMaterialPrice (inc. VAT)Pkg. Qty.
AM12910.040.0001M4 x 0.77 mm5 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£62.711
AM12910.050.0001M5 x 0.88 mm5.1 mmRockwell C36-Top Lock Distorted ThreadStandard Hex Top LockSteel£17.381
BM12910.060.0001M6 x 110 mm6 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£9.28100
CM12910.080.0001M8 x 1.2513 mm8 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£14.29100
AM12910.100.0001M10 x 1.517 mm10 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£36.491
DM12910.120.0001M12 x 1.7519 mm12 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£20.751
AM12910.140.0001M14 x 222 mm14 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£44.151
AM12910.160.0001M16 x 224 mm16 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£23.2625
AM12910.180.0001M18 x 2.527 mm18 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£87.111
AM12910.200.0001M20 x 2.530 mm20 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£18.3710
AM12910.220.0001M22 x 2.532 mm22 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£48.921
AM12910.240.0001M24 x 336 mm24 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£31.9910
AM12910.270.0001M27 x 341 mm27 mmRockwell C36-Top Lock Distorted ThreadStandard Hex Top LockSteel£250.551
EM12910.300.0001M30 x 3.548 mm30 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£39.845
AM12910.360.0001M36 x 455 mm36 mmRockwell 36-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£200.061
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Zinc Plated Class 8 Steel Standard Hex Top Lock Distorted Thread Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessTemp. RangeNut TypeTypeMaterialPrice (inc. VAT)Pkg. Qty.
AM12858.040.0001M4 x 0.77 mm5 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£32.111
BM12858.050.0001M5 x 0.88 mm5.1 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£6.90100
AM12858.060.0001M6 x 110 mm6 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£8.64100
CM12912.080.0100M8 x 113 mm8 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£28.931
D4CAL1M8 x 1.2513 mm8 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£10.2650
AM12858.080.0001M8 x 1.2513 mm8 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£15.07100
CM12912.100.0100M10 x 117 mm10 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£41.23100
EM12858.100.0001M10 x 1.517 mm10 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£20.88100
F4CAL2M10 x 1.517 mm10 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£11.5125
GM12912.100.0125M10 x 1.2517 mm10 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£50.931
HM12912.120.0150M12 x 1.519 mm12 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£52.98100
IM12912.120.0125M12 x 1.2519 mm12 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£75.981
J4CAL3M12 x 1.7519 mm12 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£15.5425
AM12858.120.0001M12 x 1.7519 mm12 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£17.9750
KM12912.140.0150M14 x 1.522 mm14 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£53.311
AM12858.140.0001M14 x 222 mm14 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£41.3350
L4CAL4M14 x 222 mm14 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£14.1010
CM12912.160.0150M16 x 1.524 mm16 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£57.701
AM12858.160.0001M16 x 224 mm16 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£24.8325
ML12858.160.0001M16 x 224 mm---Top Lock Distorted ThreadStandard Hex Top LockSteel-250
RFQ
N4CAL5M16 x 224 mm16 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£30.8820
OM12912.180.0150M18 x 1.527 mm18 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£114.801
AM12858.180.0001M18 x 2.527 mm18 mmRockwell 30-58°F to +302°FTop Lock Distorted ThreadStandard Hex Top LockSteel£68.261
PM12912.200.0150M20 x 1.530 mm20 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£74.431
L4CAL6M20 x 2.530 mm20 mm--Top Lock Distorted ThreadStandard Hex Top LockSteel£31.7010
APPROVED VENDOR -

Yellow Zinc Plated Class 10 Steel Standard Hex Nylon Insert Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessTemp. RangeNut TypeTypeMaterialPrice (inc. VAT)Pkg. Qty.
AM12450.060.0001M6 x 110 mm6 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£10.22100
BM12450.080.0001M8 x 1.2513 mm8 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£18.13100
CM12450.100.0001M10 x 1.517 mm10 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£56.791
DM12450.120.0001M12 x 1.7519 mm12 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£23.2750
AM12450.140.0001M14 x 222 mm14 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£55.351
AM12450.160.0001M16 x 224 mm16 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£45.421
AM12450.200.0001M20 x 2.530 mm20 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£8.951
AM12450.240.0001M24 x 336 mm24 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£36.5310
AM12450.270.0001M27 x 341 mm27 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£43.125
AM12450.300.0001M30 x 3.546 mm30 mmRockwell 36-58°F to +302°FNylon InsertStandard HexSteel£40.635
APPROVED VENDOR -

Plain Grade 8 Steel Standard Hex Nylon Insert Locknuts

StyleModelThread SizeHex WidthNut HeightHardnessTemp. RangeNut TypeTypeMaterialPrice (inc. VAT)Pkg. Qty.
A4FHW31 3/8"-62"1 37/64"Rockwell C26-C36-0°F to +250°FNylon InsertStandard HexSteel£23.731
B4FHW41 3/8"-122"1 37/64"Rockwell C26-C36-0°F to +250°FNylon InsertStandard HexSteel£35.601
CU12411.025.00011/4"-207/16"5/16"Rockwell C24-C32-Nylon InsertStandard HexSteel£6.39100
DU12411.062.00015/8"-1115/16"47/64"--58°F to +302°FNylon InsertStandard HexSteel£6.721
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Locknuts

Locknuts are designed to keep fasteners in place in sheet metals and similar surfaces. Raptor Supplies offers a wide range of locknuts including check nuts, castle nuts, hex locknuts & more, from brands like Grainger, Micro Plastics, Disc-Lock, Fabory, Flexloc, Metric Blue, Reiku & Wheel Check.

Frequently Asked Questions

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.

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