UNC Splined Socket Button Head Screw Grade-12.9 B18.3
d | d | a max | a min | h max | h min | s | m nom | y min | f max | f min |
---|---|---|---|---|---|---|---|---|---|---|
No.0 | 0.0600 | 0.1140 | 0.1040 | 0.0320 | 0.0260 | 0.0100 | 0.0480 | 0.0200 | 0.0100 | 0.0050 |
No.1 | 0.0730 | 0.1390 | 0.1290 | 0.0390 | 0.0330 | 0.0100 | 0.0600 | 0.0280 | 0.0100 | 0.0050 |
No.2 | 0.0860 | 0.1640 | 0.1540 | 0.0460 | 0.0380 | 0.0100 | 0.0600 | 0.0280 | 0.0100 | 0.0050 |
No.3 | 0.0990 | 0.1880 | 0.1760 | 0.0520 | 0.0440 | 0.0100 | 0.0720 | 0.0350 | 0.0100 | 0.0050 |
No.4 | 0.1120 | 0.2130 | 0.2010 | 0.0590 | 0.0510 | 0.0150 | 0.0720 | 0.0350 | 0.0100 | 0.0050 |
No.5 | 0.1250 | 0.2380 | 0.2260 | 0.0660 | 0.0580 | 0.0150 | 0.0960 | 0.0440 | 0.0100 | 0.0050 |
No.6 | 0.1380 | 0.2620 | 0.2500 | 0.0730 | 0.0630 | 0.0150 | 0.0960 | 0.0440 | 0.0100 | 0.0050 |
No.8 | 0.1640 | 0.3120 | 0.2980 | 0.0870 | 0.0770 | 0.0150 | 0.1110 | 0.0520 | 0.0150 | 0.0100 |
No.10 | 0.1900 | 0.3610 | 0.3470 | 0.1010 | 0.0910 | 0.0200 | 0.1450 | 0.0700 | 0.0150 | 0.0100 |
1/4" | 0.2500 | 0.4370 | 0.4190 | 0.1320 | 0.1220 | 0.0310 | 0.1830 | 0.0870 | 0.0200 | 0.0150 |
5/16" | 0.3125 | 0.5470 | 0.5270 | 0.1660 | 0.1520 | 0.0310 | 0.2160 | 0.1050 | 0.0200 | 0.0150 |
3/8" | 0.3750 | 0.6560 | 0.6360 | 0.1990 | 0.1850 | 0.0310 | 0.2510 | 0.1220 | 0.0200 | 0.0150 |
1/2" | 0.5000 | 0.8750 | 0.8510 | 0.2650 | 0.2450 | 0.0460 | 0.3720 | 0.1750 | 0.0300 | 0.0200 |
5/8" | 0.6250 | 1.0000 | 0.9700 | 0.3310 | 0.3110 | 0.0620 | 0.4540 | 0.2100 | 0.0300 | 0.0200 |