Locking Helical Inserts

Filter
StyleModelInsert LengthDrill SizeThread SizeMaterialPkg. Qty.
A846300.938"41/64"5/8"-18Stainless Steel50
RFQ
A847301 1/4"41/64"5/8"-18Stainless Steel50
RFQ
A849301 7/8"41/64"5/8"-18Stainless Steel50
RFQ
A848301.562"41/64"5/8"-18Stainless Steel50
RFQ
A845305/8"41/64"5/8"-18Stainless Steel50
RFQ
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#8-32 Grade 304 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthFree Coil Dia.Drill SizeFinishThread TypeThread DirectionHardnessTensile StrengthPrice (inc. VAT)Pkg. Qty.
A848100.41"-11/64"------100
RFQ
A845100.164"-11/64"------100
RFQ
B3585-2CN164S0.164"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£1,337.811
CT3585-2C164S0.164"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£891.871
B3585-2CNW164S0.164"0.212"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£1,820.431
CAT3585-2C1640.164"0.213"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£100.62100
BA3585-2CNW1640.164"0.212"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£155.02100
BA3585-2CN1640.164"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£142.53100
CAT3585-2CW1640.164"0.213"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£119.56100
B3585-2CNW246S0.246"0.212"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£1,865.521
CAT3585-2CW2460.246"0.213"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£141.44100
BA3585-2CNW2460.246"0.212"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£157.36100
CT3585-2C246S0.246"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£942.471000
A846100.246"-11/64"------100
RFQ
CAT3585-2C2460.246"0.213"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£105.24100
BA3585-2CN2460.246"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£157.92100
B3585-2CN246S0.246"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£1,631.161
A847100.328"-11/64"------100
RFQ
B3585-2CN328S0.328"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£1,461.411
CAT3585-2CW3280.328"0.213"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£142.49100
BA3585-2CN3280.328"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£167.40100
BA3585-2CNW3280.328"0.212"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£168.27100
CAT3585-2C3280.328"0.213"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£113.79100
B3585-2CNW328S0.328"0.212"#17Dry Film LubricantCoarseRight HandRockwell C43-C50200000 psi to 250000 psi£1,963.951
CT3585-2C328S0.328"0.212"#17-CoarseRight HandRockwell C43-C50200000 psi to 250000 psi£988.981
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1 5/8"-8 Grade 304 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthThread TypeDrill SizeTypeNumber Of PiecesThread SizeMaterialPrice (inc. VAT)
A83305-1.0L1 5/8"-1 5/8"--1 5/8"-8Stainless Steel-
RFQ
B83305-1.5L2.438"Coarse1 5/8"Standard11 5/8"-8Stainless Steel£104.86
A83305-2.0L3 1/4"-1 5/8"--1 5/8"-8Stainless Steel-
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1 7/8"-8 Grade 304 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthThread TypeDrill SizeTypeNumber Of PiecesThread SizeMaterialPrice (inc. VAT)
A83307-1.0L1 7/8"-1 7/8"--1 7/8"-8Stainless Steel-
RFQ
B83307-1.5L2.813"Coarse1 7/8"Standard11 7/8"-8Stainless Steel£107.75
A83307-2.0L3 3/4"-1 7/8"--1 7/8"-8Stainless Steel-
RFQ
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2 1/2"-8 Grade 304 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthThread TypeDrill SizeTypeNumber Of PiecesThread SizeMaterialPrice (inc. VAT)
A83312-1.0L2 1/2"-2 1/2"--2 1/2"-8Stainless Steel-
RFQ
B83312-1.5L3 3/4"Coarse2 1/2"Standard12 1/2"-8Stainless Steel£255.46
StyleModelInsert LengthDrill SizeThread SizeMaterial
A83316-1.0L3"3"#3-8Stainless Steel
RFQ
A83316-1.5L4 1/2"3"#3-8Stainless Steel
RFQ
StyleModelInsert LengthDrill SizeThread SizeMaterial
A83318-1.0L3 1/4"3 1/4"3 1/4"-8Stainless Steel
RFQ
A83318-1.5L4 7/8"3 1/4"3 1/4"-8Stainless Steel
RFQ
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7/16"-14 Grade 303 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthDrill SizeThread SizeMaterial
A773055/8"37/64"7/16"-14Stainless Steel
RFQ
B773375/8"41/64"7/16"-14Stainless Steel
RFQ
A7732514/25"33/64"7/16"-14Stainless Steel
RFQ
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5/8"-11 Grade 303 Stainless Steel Locking Helical Inserts

StyleModelDrill SizeInsert LengthThread SizeMaterial
A7734015/16"7/8"5/8"-11Stainless Steel
RFQ
B7730853/64"7/8"5/8"-11Stainless Steel
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CHRISLYNN -

1 1/8"-8 Grade 304 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthThread TypeDrill SizeTypeNumber Of PiecesThread SizeMaterialPrice (inc. VAT)
A83301-1.5L1.688"Coarse1 9/64"Standard11 1/8"-8Stainless Steel£44.26
B83301-2.0L2 1/4"-1 9/64"--1 1/8"-8Stainless Steel-
RFQ
CHRISLYNN -

1/4"-28 Grade 303 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthDrill SizeThread SizeMaterial
A775220.37"Q1/4"-28Stainless Steel
RFQ
B775343/8"29/64"1/4"-28Stainless Steel
RFQ
A775023/8"X1/4"-28Stainless Steel
RFQ
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3/8"-24 Grade 303 Stainless Steel Locking Helical Inserts

StyleModelDrill SizeInsert LengthThread SizeMaterial
A7752429/64"1/2"3/8"-24Stainless Steel
RFQ
A7750433/64"1/2"3/8"-24Stainless Steel
RFQ
B7753637/64"1/2"3/8"-24Stainless Steel
RFQ
StyleModelInsert LengthDrill SizeThread SizeMaterialPkg. Qty.
A848210.938"25/64"3/8"-24Stainless Steel100
RFQ
A849211 1/8"25/64"3/8"-24Stainless Steel100
RFQ
A847213/4"25/64"3/8"-24Stainless Steel100
RFQ
A845213/8"25/64"3/8"-24Stainless Steel100
RFQ
A846219/16"25/64"3/8"-24Stainless Steel100
RFQ
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1/2"-20 Grade 303 Stainless Steel Locking Helical Inserts

Thread inserts are suitable for installing threaded fasteners in soft and thin materials with a stripped & threaded hole. They are ideal for automobile, aerospace and maintenance applications. They provide more strength, versatility & resilient operation than traditional threaded holes.
These locking inserts feature Grade 303 stainless steel construction for corrosion, heat & fire resistance and moderate structural rigidity.

StyleModelInsert LengthDrill SizeThread SizeMaterial
A775260.62"37/64"1/2"-20Stainless Steel
RFQ
B7753811/16"49/64"1/2"-20Stainless Steel
RFQ
A7750611/16"41/64"1/2"-20Stainless Steel
RFQ
CHRISLYNN -

3/4"-16 Grade 303 Stainless Steel Locking Helical Inserts

StyleModelDrill SizeInsert LengthThread SizeMaterial
A775091 1/16"1 1/4"3/4"-16Stainless Steel
RFQ
B775411 3/16"1 1/4"3/4"-16Stainless Steel
RFQ
CHRISLYNN -

1"-12 Grade 303 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthDrill SizeThread SizeMaterial
A775431 1/2"1 5/16"1"-12Stainless Steel
RFQ
B775111 1/2"1 5/16"1"-12Stainless Steel
RFQ
StyleModelInsert LengthDrill SizeThread SizeMaterial
A773865.25 mm7/32"M4 x 0.7Stainless Steel
RFQ
A773638 mmIM4 x 0.7Stainless Steel
RFQ
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1 3/8"-8 Grade 304 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthThread TypeDrill SizeTypeNumber Of PiecesThread SizeMaterialPrice (inc. VAT)
A83303-1.0L1 3/8"-1 3/8"--1 3/8"-8Stainless Steel-
RFQ
A83303-2.0L2 3/4"-1 3/8"--1 3/8"-8Stainless Steel-
RFQ
B83303-1.5L2.063"Coarse1 3/8"Standard11 3/8"-8Stainless Steel£81.34
CHRISLYNN -

#3-48 Grade 304 Stainless Steel Locking Helical Inserts

Thread inserts are suitable for installing threaded fasteners in soft and thin materials with a stripped & threaded hole. They are ideal for automobile, aerospace and maintenance applications and provide more strength, versatility & resilient operation than traditional threaded holes.
These locking inserts feature Grade 304 stainless steel construction for corrosion, heat and fire-resistant properties with moderate structural rigidity.

StyleModelInsert LengthDrill SizeThread SizeMaterialPkg. Qty.
A845020.099"#36#3-48Stainless Steel100
RFQ
A846020.148"#36#3-48Stainless Steel100
RFQ
A847020.198"#36#3-48Stainless Steel100
RFQ
A848020.248"#36#3-48Stainless Steel100
RFQ
A849020.297"#36#3-48Stainless Steel100
RFQ
StyleModelInsert LengthDrill SizeThread SizeMaterial
A7735312 mm27/64"M8 x 1.25Stainless Steel
RFQ
A7736614 mm1/2"M8 x 1.25Stainless Steel
RFQ
StyleModelInsert LengthDrill SizeThread SizeMaterialPkg. Qty.
A8458120 mm13/16"M20 x 2.5Stainless Steel15
RFQ
A8468130 mm13/16"M20 x 2.5Stainless Steel15
RFQ
A8478140 mm13/16"M20 x 2.5Stainless Steel15
RFQ
A8488150 mm13/16"M20 x 2.5Stainless Steel15
RFQ
A8498160 mm13/16"M20 x 2.5Stainless Steel15
RFQ
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Locking Helical Inserts

Locking helical inserts are ideal for installing threaded fasteners by repairing stripped / damaged tapped holes or creating threaded holes in metals, polymers, wood & composite materials. They offer greater strength & productivity, as well as reduced downtime & maintenance costs, as compared to traditional threaded holes. Raptor Supplies offers these locking helical inserts from brands like Chrislynn & Heli-Coil. They are ideal for preventing the loosening / rotational spinout of the attached fastener due to vibration or shock and are suitable for automobile, aerospace, electronics, industrial, military and maintenance applications.

Frequently Asked Questions

How to choose the appropriate dimensions of a locking helical insert?

The helical insert length should be equal to the desired fastener diameter. If the application permits users to modify the installation hole, they should remember that inserts with longer lengths have greater pullout capacity (harder to pull out). The exact insert length may also vary based on the base material. Hard materials like steel do not need long inserts. On the other hand, for soft materials like aluminium, a longer insert is preferred. In contrast, inserts having wide diameters have superior overall torque-out capacity (harder to rotate inside the hole).

How to install a locking helical insert?

  • Drill out an appropriately sized hole in the material or remove damaged threading from an already prepared hole.
  • Use a tap to thread / rethread the hole in the material.
  • Select an insert and use the installation tool to wind the insert into the hole.
  • Use a tang break-off rod or punch to remove the tang / prong and allow free passage of the fastener. Large-sized holes or spark plug inserts require long nose pliers to bend the tang in & out alternately until the tang breaks free.
  • Fasteners can now be installed into the insert.

How to install a key-locking thread insert?

  • Drill a hole according to the required application.
  • Tap the drilled hole and wind the insert into the hole.
  • Drive the key into the material using the installation tool & / or hammer.

Can locking helical inserts be removed after installation?

Yes, some inserts can be removed using removal tools that unwind them in the direction opposite to that used during installation. Key locking inserts or rock solid inserts can be removed by bending the locking keys out of the material and using a winding tool to remove the insert out of the base material. Users should note that locking helical inserts can be reused after removal but key locking inserts cannot be reused. Locking helical inserts allow assembly & disassembly of fasteners multiple times.

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