- 3D Printing
- Abrasives
- Adhesives, Tapes & Fasteners
- Bearings And Transmission
- Electrical
- Fluid Power
- Hand Tools
- Holemaking & Drilling Tools
- Janitorial & Site Maintenance
- Lubrication
- Machinery & Welding
- Measuring & Inspection
- Metalworking Fluids
- Milling
- Packaging Office Supplies
- Personal Protective Equipment
- Power Tools
- Raw Materials
- Saw Blades
- Site Safety
- Storage
- Threading
- Toolholding & Workholding
- Turning Tools
- Workwear
- MSC Edge
Toggle Nav Shop All 
Over 120,000 products
Get next working day!*
Virtual Catalogue
Helicoil 1/4 - 28 2.5xD Screw-Lock Thread Repair Insert
Order Code
HEL-10275A
£0.94 £0.78
Incl. VAT Ex. VAT
Helicoil 1/4 - 28 2.5xD Screw-Lock Thread Repair Insert is only available to buy in quantities of 10
Product Information
Thread insert is precision formed screw thread coils worked into a diamond shape. The resultant surface finish is a mirror-like 8-16 micro inches. This wire is then wound into a spiral coil which when installed into Heli-Coil tapped holes, provides permanent conventional 60° internal screw threads. This assembled insert accommodates any standard bolt or screw (MIL-S-7742) and MIL-S8879 (UNJ controlled radius root) male threaded members. Heli-Coil inserts are larger in diameter before installation than the tapped hole. During installation the inserting tool applies torque to the tang reducing the diameter of the leading coil permitting it to enter the tapped thread. After installation each high tensile stainless steel coil of the insert expands outward with a spring like action permanently anchoring the insert.
Technical Specification
| Brand | Helicoil |
|---|---|
| Style | Imperial |
| Manufacturer Part Number | 00063131 |
| Thread Type | UNF |
| Type | Screw-Lock Thread Repair Insert |
| Features & Benefits | • Stronger assemblies • No thread wear • Corrosion resistance • Design flexibility • Eliminate stress • Minimize space and eight • Minimize total cost • True clamping torque • Wide temperature range • Quality and reliability • High production • Universal acceptance • Total design service • Provides self-locking torque on male member by a series of chords on one or more of insert coils • Positive self-locking torque, complying with NASM 8846, MA1565 and MIL-N-25027 • Resilient locking mechanism that grips the bolt and prevents from loosening under vibration/impact • Repeated assembly and disassembly without appreciable loss of self-locking torque • Savings in space, weight and money • 304 stainless steel standard general purpose material • Ideal for original equipment applications repair and overhaul |
| Thread Standard | UNF |
| Thread Size | 1/4 - 28 |
| Diameter (in) | 0.3060 - 0.3260 |
| Thread Size (in) | 1/4 |
| Coating/Finish | Uncoated |
Related Products
Why we are loved
Rated ‘World-class’ for customer service