VÖLKEL Thread Repair Kits, UNC No. 10 x 24

The V-COIL thread repair kit UNC No. 10 x 24 is a complete repair kit for damaged or worn UNC internal threads in workshops, maintenance, assembly and mechanical engineering. The kit combines an STI short machine tap, STI twist drill, inserting tool, tang break tool and Type S wire thread inserts. The decisive selection criteria are the UNC No. 10 x 24 thread system, the 1.5D insert length and the correct STI preparation process.

VÖLKEL Thread Repair Kits, UNC No. 10 x 24

Features and applications

The V-COIL thread repair kit UNC No. 10 x 24 is a complete repair kit for damaged or worn UNC internal threads in workshops, maintenance, assembly and mechanical engineering. The kit combines an STI short machine tap, STI twist drill, inserting tool, tang break tool and Type S wire thread inserts. The decisive selection criteria are the UNC No. 10 x 24 thread system, the 1.5D insert length and the correct STI preparation process.

UNC means Unified National Coarse and describes an inch-based coarse thread commonly used in US-oriented screw connections, spare parts and technical assemblies. During the repair, you do not simply recut a standard internal thread. You create a special STI receiving thread for the wire thread insert, so the prepared component can carry a new stainless steel internal thread insert according to DIN 8140.

Applications

• for repairing damaged or worn UNC internal threads No. 10 x 24
• for reinforcing threads in materials with low shear strength
• for recovering components with damaged internal threads
• for creating new load-bearing internal threads with Type S wire thread inserts
• for service workshops, maintenance, assembly, metalworking and mechanical engineering
• Process: manual or assisted drive depending on your tool holder and machine configuration
• Use: thread cutting, thread reworking and thread cleaning depending on the condition of the thread

Benefits

• complete kit logic with drill, STI tap, inserting tool, tang break tool and inserts
• stainless steel wire thread inserts create a load-bearing internal thread in the repaired component
• Type S is free running and suitable for standard screw connections without locking function
• DIN 8140 and ISO 2 (6H) support a repair process based on recognized standards
• the component-based kit structure reduces incorrect tool selection during the repair workflow
• the kit is suitable for recurring service work on inch-based UNC threads

Application limits

• The repair is reliable only when drilling, STI receiving thread and insert depth are executed cleanly, so the kit components should be used in the correct sequence.

Step by step

1. Inspect the damaged internal thread and decide whether the component structure allows a repair with a wire thread insert.
2. Align the component securely and make sure the tool axis and thread axis are in line.
3. Drill out the damaged thread area with the STI twist drill included in the kit.
4. Cut the STI receiving thread with the matching STI tap and suitable cutting fluid.
5. Clean the receiving thread and remove chips completely from the repair area.
6. Place the wire thread insert into the hand inserting tool and guide it straight into the receiving thread.
7. Screw in the insert in a controlled manner until the intended installation position is reached.
8. Remove the driving tang with the tang break tool.
9. Check the thread run with a suitable screw or appropriate inspection tool.
10. Scope of delivery
11. Taps, dies and cutting tools
12. 1 piece STI Short Machine Tap ISO 529 Form D HSS-G - UNC No. 10 x 24 (
13. 03105
14. )
15. Drills and preparation
16. 1 piece STI-Twist Drill, 5.2 mm (
17. 00052
18. )
19. Thread inserts and repair components
20. 1 piece V-COIL Inserting Tool No. 7 (
21. 08007
22. )
23. 1 piece Tang Break Tool No. 8 (
24. 07008
25. )
26. 20 pieces V-COIL Wire thread insert Free running type S UNC No. 10 x 24 - 1.5 D (
27. 08305
28. )
29. Storage and identification
30. 1 piece plastic case

How to choose

Before repairing the thread, check the thread designation, component condition, available wall thickness and required insert length so the wire thread insert seats securely in the receiving thread.