DIN371
UNF ≈DIN371 HSSE
Spiral Fluted Machine Taps with Reinforsed Shank for Unified Fine Thread ANSI B1.1.
35° Right-hand Helix.
Grade of fit 2B. Grinded thread profile.
Form C: 2 - 3 threads leads.
Form C: 2 - 3 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 | 5.5 | 18 | 3.5 | 2.7 | 3 | 2816 UNF Nr.4x48 |
| UNF Nr.5 | 44 | 56 | 6.0 | 18 | 3.5 | 2.7 | 3 | 2816 UNF Nr.5x44 |
| UNF Nr.6 | 40 | 56 | 7.0 | 20 | 4.0 | 3.0 | 3 | 2816 UNF Nr.6x40 |
| UNF Nr.10 | 32 | 70 | 8.0 | 25 | 6.0 | 4.9 | 3 | 2816 UNF Nr.10x32 |
| UNF Nr.12 | 28 | 70 | 9.0 | 25 | 6.0 | 4.9 | 3 | 2816 UNF Nr.12x28 |
| UNF1/4 | 28 | 80 | 10.0 | 30 | 7.0 | 5.5 | 3 | 2816 UNF 1/4X28 |
| UNF5/16 | 24 | 90 | 10.0 | 35 | 8.0 | 6.2 | 3 | 2816 UNF 5/16x24 |
| UNF3/8 | 24 | 100 | 10.0 | 35 | 9.0 | 7.0 | 3 | 2816 UNF 3/8x24 |
| UNF Nr.8 | 36 | 63 | 7.5 | 21 | 4.5 | 3.4 | 3 | 2816 UNF Nr.8x36 |