The STI HexTap V-COIL rapid tap enables the precise creation of an STI thread for inserts according to ISO 2 (6H). With its 1/4'' hex shank, the tap is perfect for hand tools and use with a cordless screwdriver.
More information about HexTap can be found here:
HexTap – The solution for difficult threads
Tip: Detailed information about difficult threads:
HexTap – The solution for difficult threads
What is an STI thread?
An STI thread is an oversized internal thread used to hold wire thread inserts – ideal for thread repair and reinforcement.
What does Form D mean?
Form D provides optimized chip evacuation and is suitable for both blind and through holes.
How is the tap used?
Via the 1/4'' hex shank – ideal for hand tools and cordless screwdrivers.
Which materials is it suitable for?
For free-machining steels up to 900 N/mm² as well as unalloyed and low-alloy steels.
Which tolerances apply?
The tap corresponds to ISO 1 (4H); the finished STI thread with insert corresponds to ISO 2 (6H).
Do you have questions or need support? Use our contact form for a non-binding inquiry.
| Form | Form D |
|---|---|
| Material | HSS-G |
| Tolerance | ISO 1 (4H) |
| Size | STI-UNC 5/16x18 |
| Overall length (L1) | 42 mm |
| Thread length (L2) | 21 mm |
| Diameter (B) | 9,8 mm |
| Drive connector | Drive mount hexagon 1/4" inch |
| EAN | 4022835034216 |
| Item number | 03421 |
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