00-0121 (-) Flat Whitworth Screw
Model: 00-0121
Dia range:1/8～3/4
Length range:6～150
Iron (or standard), brass, Stainless steel (303, 304,…).
Plain, Zinc blue cr6+, Zinc yellow cr6+, Trivalent zinc cr+3 color white,…
| Thread Nominal Diameter | Thread Count | dk | k | n | t | ||||
|---|---|---|---|---|---|---|---|---|---|
| Maximum | Minimum | Maximum | Minimum | Maximum | Minimum | Maximum | Minimum | ||
| W1/8 | 40 | 6.05 | 5.55 | 1.80 | 1.36 | 0.90 | 0.70 | 0.83 | 0.57 |
| W5/32 | 32 | 7.70 | 7.10 | 2.23 | 1.73 | 1.01 | 0.81 | 1.00 | 0.60 |
| W3/16 | 24 | 9.18 | 8.47 | 2.63 | 2.13 | 1.26 | 1.04 | 1.28 | 0.76 |
| W1/4 | 20 | 12.18 | 11.42 | 3.50 | 2.84 | 1.58 | 1.30 | 1.57 | 1.03 |
| W5/16 | 18 | 15.14 | 14.26 | 4.32 | 3.60 | 1.77 | 1.49 | 1.98 | 1.22 |
| W3/8 | 16 | 18.3 | 17.10 | 5.15 | 4.37 | 2.08 | 1.58 | 2.46 | 1.54 |
| W1/2 | 12 | 24.60 | 23.40 | 6.95 | 5.75 | 2.84 | 2.34 | 3.26 | 2.34 |
| W5/8 | 11 | 30.60 | 29.45 | 8.74 | 7.14 | 3.51 | 3.01 | 3.66 | 2.74 |
| W3/4 | 10 | 35.00 | 33.04 | 8.5 | – | 4.5 | 4.00 | 5.6 | 4.4 |
