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PRODUCT SPECIFICATION
Threading Tools
Machine Tap
4-40 UNC Machine Tap
High-Speed Steel (HSS-E) for Through-Hole Machining
Precision Threading Performance
This machine tap is designed for professional threading operations, specifically engineered for 4-40 UNC threads. Constructed from HSS-E (High-Speed Steel with Cobalt), it offers excellent cutting performance and durability. Adhering to the DIN 371 standard, this tap features a 3-flute design and is optimized for producing precise threads in through-hole applications up to 3xD.
Key Technical Details
- • Thread Type: 4-40 UNC (2B Tolerance Class).
- • Material: High-performance HSS-E.
- • Design: 3 cutting edges, B-taper lead form.
- • Application: Through-hole machining up to 3xD.
- • Standard: DIN 371 compliant.
Specification Summary
| Thread Size | 4-40 UNC |
| Tapping Hole Ø | 2.35 mm |
| Thread Pitch | 0.635 mm |
| Overall Length | 36 mm |
| Shank Ø | 3.5 mm (h9) |
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