21-0001 (+) Tapping Type B1 Flat
Model: 21-0001
dia range:M2～M6
Length range:4～50
Iron (or standard), SUS410, Stainless steel (303, 304,…), Titanium (Ti).
Plain, Zinc blue cr6+, Zinc yellow cr6+, Trivalent zinc cr+3 color white,…
| Nominal Diameter | 2 | 2.3 | 2.5 | 2.6 | 3 | 3.5 | 4 | 4.5 | 5 | 6 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| dk | Standard Dimension | 4.0 | 4.6 | 5.0 | 5.2 | 6.0 | 7.0 | 8.0 | 90 | 10.0 | 12.0 | |
| Tolerance | 0 -0.4 | 0 -0.5 | 0 -0.6 | 0 -0.7 | ||||||||
| k | Standard Dimension | 1.2 | 1.35 | 1.45 | 1.50 | 1.75 | 2.00 | 2.30 | 2.55 | 2.80 | 3.40 | |
| Tolerance | 0 -0.2 | 0 -0.3 | 0 -0.4 | |||||||||
| Cross Slot | m | Reference | 2.2 | 2.4 | 2.6 | 2.6 | 3.6 | 4.1 | 4.5 | 4.9 | 5.1 | 6.7 |
| Q | Maximum | 1.01 | 1.21 | 1.42 | 1.42 | 1.43 | 1.93 | 2.33 | 2.73 | 2.93 | 3.26 | |
| Minimum | 0.65 | 0.85 | 1.05 | 1.05 | 0.91 | 1.40 | 1.79 | 2.19 | 2.38 | 2.70 | ||
| Cross Slot Number | 1 | 2 | 3 | |||||||||
| d | Maximum | 2.00 | 2.30 | 2.50 | 2.60 | 3.00 | 3.50 | 4.00 | 4.50 | 5.00 | 6.00 | |
| Maximum | 1.90 | 2.20 | 2.40 | 2.50 | 2.90 | 3.40 | 3.85 | 4.35 | 4.85 | 5.85 | ||
| Number of threads per 25.4 mm | 40 | 32 | 28 | 28 | 24 | 20 | 18 | 16 | 16 | 14 | ||
