DIN371
UNF ≈DIN371 HSSE
Spiral Point Machine Taps with Reinforsed Shank for Unified Fine Thread ANSI B1.1.
Grade of fit 2B. Grinded thread profile.
Form B: 4 - 5 threads leads.
Form B: 4 - 5 threads leads.
| Symbol | No of Threads 1" | L, mm | l1, mm | l2, mm | d1, mm | a, mm | z | Article number |
| UNF Nr.4 | 48 | 56 | 11 | 18 | 3.5 | 2.7 | 3 | 2812 UNF Nr.4x48 |
| UNF Nr.5 | 44 | 56 | 11 | 18 | 3.5 | 2.7 | 3 | 2812 UNF Nr.5X44 |
| UNF Nr.6 | 40 | 56 | 13 | 20 | 4.0 | 3.0 | 3 | 2812 UNF Nr.6X40 |
| UNF Nr.8 | 36 | 63 | 13 | 21 | 4.5 | 3.4 | 3 | 2812 UNF Nr.8x36 |
| UNF Nr.10 | 32 | 70 | 16 | 25 | 6.0 | 4.9 | 3 | 2812 UNF Nr.10X32 |
| UNF Nr.12 | 28 | 70 | 16 | 25 | 6.0 | 4.9 | 3 | 2812 UNF Nr.12x28 |
| UNF1/4 | 28 | 80 | 17 | 30 | 7.0 | 5.5 | 3 | 2812 UNF 1/4x28 |
| UNF5/16 | 24 | 90 | 17 | 35 | 8.0 | 6.2 | 3 | 2812 UNF 5/16x24 |
| UNF3/8 | 24 | 100 | 18 | 35 | 9.0 | 7.0 | 3 | 2812 UNF 3/8x24 |