Hex Head Bolt and Clearance Hole Installation Tolerance Table Chart

Mechanical Tolerance Standards Charts

The following is a recommended mechanical tolerance and hole sizes for standard ANSI hex head fasteners. Note that all dimensional data and tolerances are given in inch units.

SIZE HEAD
HEIGHT
TAPPED HOLE
POSITION TOL
CLEARANCE HOLE
DIA. TOL. LIMITS
HOLE POSITIONAL TOLERANCE
HEAD WIDTH
FLAT-FLAT
.073-64/72
#1
.050 .005 .073
.068
.003 .125
.086-56/64
#2
.086 .008 .107
.100
.006 .140
.112-40/48
#4
.112 .009 .137
.127
.006 .183
.138-32/40
#6
.138 .014 .174
.164
.012 .226
.164-32/36
#8
.164 .016 .203
.192
.012 .270
.190-24/32
#10
.190 .022 .238
.226
.014 .312
.250-20/28 .250 .024 .300
.288
.014 .375
.3125-18/24 .3125 .024 .371
.351
.014 .468
.375-16/24 .375 .024 .435
.415
.016 .563
.4375-14/20 .4375 .024 .4975
.478
.016 .656
.500-13/20 .500 .024 .564
.544
.020 .750
.625-11/18 .625 .028 .693
.673
.020 .938
.750-10/16 .750 .028 .818
.798
.020 1.125
.875-9/14 .875 .028 .943
.923
.020 1.313
1.00-8/12 1.00 .028 1.068
1.048
.020 1.500

Related Resources:

Contribute Article Spider Optimizer

© Copyright 2000 - 2017, by Engineers Edge, LLC www.engineersedge.com
All rights reserved
Disclaimer | Feedback | Advertising | Contact

Spider Optimizer

Home
Engineering Book Store
Engineering Forum
Excel App. Downloads
Online Books & Manuals
Engineering News
Engineering Videos
Engineering Calculators
Engineering Toolbox
Engineering Jobs
GD&T Training Geometric Dimensioning Tolerancing
DFM DFA Training
Training Online Engineering
Advertising Center



Copyright Notice

Publishing Program