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Graded Hex Nuts & Bolts

 
  • Graded Nuts Dimensions
  • Graded Hex Bolt Dimensions -
    Partially Threaded
  • Graded Hex Bolt Dimensions -
    Fully Threaded
Nut Grades
Graded Nuts

Finished Hex Nuts - ANSI/ASME B18.2.2
Nominal Size or Basic Major Thread Diameter (F) Width Across Flats (G) Width Across Corners (H) Thickness
Basic Max Min Max Min Basic Max Min
1/4 .2500 7/16 .438 .428 .505 .488 7/32 .226 .212
5/16 .3125 1/2 .500 .489 .577 .557 17/64 .273 .258
3/8 .3750 9/16 .562 .551 .650 .628 21/64 .337 .320
7/16 .4375 11/16 .688 .675 .794 .768 3/8 .385 .365
1/2 .5000 3/4 .750 .736 .866 .840 7/16 .448 .427
9/16 .5625 7/8 .875 .861 1.010 .982 31/64 .496 .473
5/8 .6250 15/16 .938 .922 1.083 1.051 35/64 .559 .535
3/4 .7500 1-1/8 1.125 1.088 1.299 1.240 41/64 .665 .617
7/8 .8750 1-5/16 1.312 1.269 1.516 1.447 3/4 .776 .724
1 1.0000 1-1/2 1.500 1.450 1.732 1.653 55/64 .887 .831
1-1/8 1.1250 1-11/16 1.688 1.631 1.949 1.859 31/32 .999 .939
1-1/2 1.500 2-1/4 2.250 2.175 2.598 2.480 1-9/32 1.317 1.245
Bolt Head GradesGraded Hex Bolt Dimensions - Partially Threaded

Graded Hex Bolt Dimensions - Partially Threaded
Nominal Or Basic Product Dia (E) Body Diameter (F) Width Across Flats (G) Width Across Corners (H) Head Height (R) Radius of Fillet (LT) Thread Lngth
For Screw Lengths
< 6 in		 For Screw Lengths
> 6 in
Max Min Basic Max Min Max Min Basic Max Min Min Basic Basic
1/4
5/16
3/8
7/16		 0.2500
0.3125
0.3750
0.4375		 0.2500
0.3125
0.3750
0.4375		 0.2450
0.3065
0.3690
0.4305		 7/16
1/2
9/16
5/8		 0.438
0.500
0.562
0.625		 0.428
0.489
0.551
0.612		 0.505
0.577
0.650
0.722		 0.488
0.557
0.628
0.698		 5/32
13/64
15/64
9/32		 0.163
0.211
0.243
0.291		 0.150
0.195
0.226
0.272		 0.015
0.015
0.015
0.015		 0.750
0.875
1.000
1.125		 1.000
1.125
1.250
1.375
1/2
9/16
5/8
3/4		 0.5000
0.5625
0.6250
0.7500		 0.5000
0.5625
0.6250
0.7500		 0.4930
0.5545
0.6170
0.7410		 3/4
13/16
15/16
1-1/8		 0.750
0.812
0.938
1.125		 0.736
0.798
0.922
1.100		 0.866
0.938
1.083
1.299		 0.840
0.910
1.051
1.254		 5/16
23/64
25/64
15/32		 0.323
0.371
0.403
0.483		 0.302
0.348
0.378
0.455		 0.015
0.020
0.020
0.020		 1.250
1.375
1.500
1.750		 1.500
1.625
1.750
2.000
7/8
1
1-1/8
1-1/4		 0.8750
1.0000
1.1250
1.2500		 0.8750
1.0000
1.1250
1.2500		 0.8660
0.9900
1.1140
1.2390		 1-5/16
1-1/2
1-11/16
1-7/8		 1.312
1.500
1.688
1.875		 1.285
1.469
1.631
1.812		 1.516
1.732
1.949
2.165		 1.465
1.675
1.859
2.066		 35/64
39/64
11/16
25/32		 0.563
0.627
0.718
0.813		 0.531
0.591
0.658
0.749		 0.040
0.060
0.060
0.060		 2.000
2.250
2.500
2.750		 2.250
2.500
2.750
3.000
1-3/8
1-1/2		 1.3750
1.5000		 1.3750
1.5000		 1.3630
1.4880		 2-1/6
2-1/4		 2.062
2.250		 1.994
2.175		 2.382
2.598		 2.273
2.480		 27/32
15/16		 0.878
0.974		 0.810
0.902		 0.060
0.060		 3.000
3.250		 3.250
3.500
Graded Hex Bolt Dimensions - Fully Threaded

Graded Hex Bolt Dimensions - Fully Threaded
Nominal Or Basic Product Dia (E) Body Diameter (F) Width Across Flats (G) Width Across Corners (H) Head Height
Max Min Basic Max Min Max Min Basic Max Min
1/4
5/16
3/8
7/16		 0.2500
0.3125
0.3750
0.4375		 0.2500
0.3125
0.3750
0.4375		 0.2450
0.3065
0.3690
0.4305		 7/16
1/2
9/16
5/8		 0.438
0.500
0.562
0.625		 0.428
0.489
0.551
0.612		 0.505
0.577
0.650
0.722		 0.488
0.557
0.628
0.698		 5/32
13/64
15/64
9/32		 0.163
0.211
0.243
0.291		 0.150
0.195
0.226
0.272
1/2
9/16
5/8
3/4		 0.5000
0.5625
0.6250
0.7500		 0.5000
0.5625
0.6250
0.7500		 0.4930
0.5545
0.6170
0.7410		 3/4
13/16
15/16
1-1/8		 0.750
0.812
0.938
1.125		 0.736
0.798
0.922
1.100		 0.866
0.938
1.083
1.299		 0.840
0.910
1.051
1.254		 5/16
23/64
25/64
15/32		 0.323
0.371
0.403
0.483		 0.302
0.348
0.378
0.455
7/8
1
1-1/8
1-1/4		 0.8750
1.0000
1.1250
1.2500		 0.8750
1.0000
1.1250
1.2500		 0.8660
0.9900
1.1140
1.2390		 1-5116
1-1/2
1-11/16
1-7/8		 1.312
1.500
1.688
1.875		 1.285
1.469
1.631
1.812		 1.516
1.732
1.949
2.165		 1.465
1.675
1.859
2.066		 35/64
39/64
11/16
25/32		 0.563
0.627
0.718
0.813		 0.531
0.591
0.658
0.749
1-3/8
1-1/2		 1.3750
1.5000		 1.3750
1.5000		 1.3630
1.4880		 2-1/6
2-1/4		 2.062
2.250		 1.994
2.175		 2.382
2.598		 2.273
2.480		 27/32
15/16		 0.878
0.974		 0.810
0.902