COUNTERBORED (COUNTER-BORE) HOLES | |||||
USA SOCKET-HEAD CAP SCREWS | |||||
SCREW DIA | A COUNTERBORE DIA | B COUNTERBORE DEPTH | C COUNTERSINK DIA | D CLEARANCE DIA | |
Normal Fit | Close Fit | ||||
#0 | 1/8 | .060 | .074 | #49 | #51 |
#2 | 3/16 | .086 | .102 | #36 | 3/32 |
#4 | 7/32 | .112 | .130 | #29 | 1/8 |
#5 | 1/4 | .125 | .145 | #23 | 9/64 |
#6 | 9/32 | .138 | .158 | #18 | #23 |
#8 | 5/16 | .164 | .188 | #10 | #15 |
#10 | 3/8 | .190 | .218 | #2 | #5 |
1/4 | 7/16 | .250 | .278 | 9/32 | 17/64 |
5/16 | 17/32 | .312 | .346 | 11/32 | 21/64 |
3/8 | 5/8 | .375 | .415 | 13/32 | 25/64 |
7/16 | 23/32 | .438 | .483 | 15/32 | 29/64 |
1/2 | 13/16 | .500 | .552 | 17/32 | 33/64 |
5/8 | 1 | .625 | .689 | 21/32 | 41/64 |
3/4 | 1-3/16 | .750 | .828 | 25/32 | 49/64 |
7/8 | 1-3/8 | .875 | .963 | 29/32 | 57/64 |
1 | 1-5/8 | 1.000 | 1.100 | 1-1/32 | 1-1/64 |
1-1/4 | 2 | 1.250 | 1.370 | 1-5/16 | 1-9/32 |
1-1/2 | 2-3/8 | 1.500 | 1.640 | 1-9/16 | 1-17/32 |
1-3/4 | 2-3/4 | 1.750 | 1.910 | 1-13/16 | 1-25/32 |
2 | 3-1/8 | 2.000 | 2.180 | 2-1/16 | 2-1/32 |
COUNTERBORED (COUNTER-BORE) HOLES | |||||
METRIC SOCKET-HEAD CAP SCREWS | |||||
M1.6 | 3.50mm | 1.6mm | 2.0mm | 1.95mm | 1.80mm |
M2 | 4.40mm | 2mm | 2.6mm | 2.40mm | 2.20mm |
M2.5 | 5.40mm | 2.5mm | 3.1mm | 3.00mm | 2.70mm |
M3 | 6.50mm | 3mm | 3.6mm | 3.70mm | 3.40mm |
M4 | 8.25mm | 4mm | 4.7mm | 4.80mm | 4.40mm |
M5 | 9.75mm | 5mm | 5.7mm | 5.80mm | 5.40mm |
M6 | 11.20mm | 6mm | 6.8mm | 6.80mm | 6.40mm |
M8 | 14.50mm | 8mm | 9.2mm | 8.80mm | 8.40mm |
M10 | 17.50mm | 10mm | 11.2mm | 10.80mm | 10.50mm |
M12 | 19.50mm | 12mm | 14.2mm | 13.00mm | 12.50mm |
M14 | 22.50mm | 14mm | 16.2mm | 15.00mm | 14.50mm |
M16 | 25.50mm | 16mm | 18.2mm | 17.00mm | 16.50mm |
M20 | 31.50mm | 20mm | 22.4mm | 21.00mm | 20.50mm |
M24 | 37.50mm | 24mm | 26.4mm | 25.00mm | 24.50mm |
M30 | 47.50mm | 30mm | 33.4mm | 31.50mm | 31.00mm |
M36 | 56.50mm | 36mm | 39.4mm | 37.50mm | 37.00mm |
M42 | 66.00mm | 42mm | 45.6mm | 44.00mm | 43.00mm |
M48 | 75.00mm | 48mm | 52.6mm | 50.00mm | 49.00mm |