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:

Link to this Webpage:

Copy Text to clipboard

Spider Optimizer

© Copyright 2000 - 2024, by Engineers Edge, LLC
www.engineersedge.com
All rights reserved
Disclaimer | Feedback
Advertising | Contact