20-003W (+) Tapping A Truss Washerhead
Model: 20-003W
Dia range:M4～M4
Length range:12～30
Iron (or standard), Stainless steel (303, 304,…).
Plain, Trivalent zinc cr+3 color white, Trivalent zinc cr+3 color black, GB (brown bronze),…
| Nominal Diameter | 4 | ||
|---|---|---|---|
| dk | Standard Dimension | 9.4 | |
| Tolerance | 0 -0.5 | ||
| dc | Standard Dimension | 12.0 | |
| Tolerance | 0 -0.6 | ||
| k | Standard Dimension | 2.9 | |
| Tolerance | ±0.15 | ||
| Cross Recess | m | Max | 4.7 |
| Q | Max | 2.13 | |
| Min | 1.60 | ||
| Cross Recess No. | 2 | ||
| d | Max | 4,15 | |
| Min | 4 | ||
| Based on thread pitch per 25.4 mm | 16 | ||
| c | Standard Dimension | 0.8 | |
| Tolerance | ±0.15 | ||
