Socket Head Screw Thread and Clearance Hole GD&T Tolerance Table Chart

Mechanical Tolerance Standards Charts

The following are recommended design installation mechanical tolerances table for cap head screws and the related clearance holes.

Related Resources:

SIZE HEAD
HEIGHT
TAPPED HOLE
POSITION TOL
CLEARANCE HOLE
DIA. TOL. LIMITS
HOLE POSITIONAL TOLERANCE
HEAD DIAMETER COUNTERBORE DIA.
TOLERANCE LIMITS
.060-80
#0
.060 .005 .073
.068
.003 .096 .130
.123
.086-56/64
#2
.086 .008 .107
.100
.006 .140 .177
.170
.112-40/48
#4
.112 .009 .137
.127
.006 .183 .230
.211
.138-32/40
#6
.138 .014 .174
.164
.012 .226 .274
.264
.164-32/36
#8
.164 .016 .203
.192
.012 .270 .326
.314
.190-24/32
#10
.190 .022 .238
.226
.014 .312 .394
.372
.250-20/28 .250 .024 .300
.288
.014 .375 .457
.435
.3125-18/24 .3125 .024 .371
.351
.014 .468 .552
.528
.375-16/24 .375 .024 .435
.415
.016 .563 .654
.625
.4375-14/20 .4375 .024 .4975
.478
.016 .656 .742
.718
.500-13/20 .500 .024 .564
.544
.020 .750 .840
.816
.625-11/18 .625 .028 .693
.673
.020 .938 1.032
1.008
.750-10/16 .750 .028 .818
.798
.020 1.125 1.217
1.195
.875-9/14 .875 .028 .943
.923
.020 1.313 1.407
1.383
1.00-8/12 1.00 .028 1.068
1.048
.020 1.500 1.594
1.570

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