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Thread Size Thread Size | Hide |
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Thread Type Thread Type |
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Material Material |
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Thread Direction Thread Direction |
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Thread Spacing Thread Spacing |
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Drill Bit Size Drill Bit Size |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Passivation Passivation |
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Tensile Strength Tensile Strength |
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For Maximum Hole Diameter For Maximum Hole Diameter |
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For Tap Type For Tap Type |
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For Minimum Material Thickness For MinimumMaterial Thickness |
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Helical Insert Style Helical Insert Style |
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For Thread Direction For Thread Direction |
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Specifications Met Specifications Met |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Number of Inserts Included Number of Inserts Included |
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For Helical Insert Style For Helical Insert Style |
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How to Install Helical Inserts
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About Helical Insert Length
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Stainless Steel Helical Inserts

Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Inserts | Through-Hole Taps | Closed-End Hole Taps | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | |||
18-8 Stainless Steel—Right-Hand Threaded | |||||||||||
| 1 1/8"-12 | 1 1/8" | 1 5/32" | 1 5/32" | MS124-666 | 1 | 000000000 | 00000 | 000000000 | 0000000 | 000000000 | 0000000 |
| 1 1/8"-12 | 1.688" | 1 5/32" | 1 5/32" | MS124-706 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
Stainless Steel Screw-Locking Helical Inserts

A distorted thread grips the screw to resist loosening. Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw.
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |
18-8 Stainless Steel—Right-Hand Threaded | |||||||
|---|---|---|---|---|---|---|---|
| 1 1/8"-12 | 1.688" | 1 5/32" | 1 5/32" | 5 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 0000000 |
Extraction Tools for Helical Inserts
Place the tip of these tools into an insert and strike a light blow to the tool’s head. Then turn the tools counterclockwise with pressure to extract the insert.
| For Thread Size | Each | |
| 1 1/8"-7, 1 1/8"-12, 1 1/4"-7, 1 1/4"-8, 1 1/4"-12, 1 3/8"-6, 1 3/8"-12, 1 1/2"-6, 1 1/2"-8, 1 1/2"-12, M27, M30, M36, M39 | 000000000 | 0000000 |



























