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Socket Countersunk (Imperial)

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SOCKET COUNTERSUNK SCREWS (IMPERIAL)

ASME B18.3

DIA A B B nom M (MIN) R min S (MIN)
1/40.365 - 0.3750.244 - 0.2503/16 (0.188)0.1200.0071.000
5/160.457 - 0.4690.306 - 0.3121/4 (0.250)0.1510.0091.120
3/80.550 - 0.5620.368 - 0.3755/16 (0.312)0.1820.0121.250
7/160.642 - 0.6560.430 - 0.4383/8 (0.375)0.2130.0141.380
1/20.735 - 0.7500.492 - 0.5003/8 (0.375)0.2450.0161.500
9/160.827 - 0.8430.554 - 0.5627/16 (0.438)0.2760.0211.630
5/80.921 - 0.9380.616 - 0.6251/2 (0.500)0.3070.0211.750
3/41.107 - 1.1250.740 - 0.7505/8 (0.625)0.3700.0252.000
7/81.293 - 1.3120.864 - 0.8753/4 (0.750)0.4320.0312.250
11.479 - 1.5000.988 - 1.0003/4 (0.750)0.4950.0342.500
1-1/81.665 - 1.6881.111 - 1.1257/8 (0.875)0.5570.0392.810
1-1/41.852 - 1.8751.236 - 1.2507/8 (0.875)0.6200.0443.120
1-3/82.038 - 2.0621.360 - 1.3751 (1.000)0.6820.0483.440
1-1/22.224 - 2.2501.485 - 1.5001 (1.000)0.7450.0523.750
PLATE & BOLT DATA
1/4 +
A0.480 - 0.531
B (NOM)5/32 (0.156)
M (MIN)0.111
S (MIN)1.00
5/16 +
A0.600 - 0.656
B (NOM)3/16 (0.188)
M (MIN)0.135
S (MIN)1.12
3/8 +
A0.720 - 0.781
B (NOM)7/32 (0.219)
M (MIN)0.159
S (MIN)1.25
7/16 +
A0.781 - 0.844
B (NOM)1/4 (0.250)
M (MIN)0.159
S (MIN)1.38
1/2 +
A0.872 - 0.938
B (NOM)5/16 (0.312)
M (MIN)0.172
S (MIN)1.50
5/8 +
A1.112 - 1.188
B (NOM)3/8 (0.375)
M (MIN)0.220
S (MIN)1.75
3/4 +
A1.355 - 1.438
B (NOM)1/2 (0.500)
M (MIN)0.220
S (MIN)2.00
7/8 +
A1.604 - 1.688
B (NOM)9/16 (0.562)
M (MIN)0.248
S (MIN)2.25
1 +
A1.841 - 1.938
B (NOM)5/8 (0.625)
M (MIN)0.297
S (MIN)2.50
1-1/8 +
A2.079 - 2.188
B (NOM)3/4 (0.750)
M (MIN)0.325
S (MIN)2.81
1-1/4 +
A2.316 - 2.438
B (NOM)7/8 (0.875)
M (MIN)0.358
S (MIN)3.12
1-3/8 +
A2.553 - 2.688
B (NOM)7/8 (0.875)
M (MIN)0.402
S (MIN)3.44
1-1/2 +
A2.791 - 2.938
B (NOM)1 (1.000)
M (MIN)0.435
S (MIN)3.75

  • Dimensions in inches

  • Available in High Tensile Steel and A2 Stainless Steel

  • Other materials manufactured on request