ASME B18.2.1 Square Head Bolts

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ASME B18.2.1 Square Head Bolts

 



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ASME B18.2.1 Square Head Bolts

ASME B18.2.1 Square Head Bolts


Dimensions of Square Head Bolts
Thread Length for
Bolt Leng ths, LT
(See Para. 3.7)
Nominal Size
or Basic
Product
Diameter
Full-Size Body
Diameter, E
(See Paras. 3.4
and 3.5)
Width Across Flats, F
(See Para. 2.1.2)
Width Across Corners, G
Head Height, H
Radius of
Fillet, R
6 in. and Shorter
Over
6 in.
Max.
Min.
Basic
Max.
Min.
Max.
Min.
Basic
Max.
Min.
Max.
Min.
Nom.
Nom.
1/4
0.25
0.26
0.237
3/8
0.375
0.362
0.53
0.498
11/64
0.188
0.156
0.03
0.01
0.75
1
5/16
0.3125
0.324
0.298
1/2
0.5
0.484
0.707
0.665
13/64
0.22
0.186
0.03
0.01
0.875
1.125
3/8
0.375
0.388
0.36
9/16
0.562
0.544
0.795
0.747
1/4
0.268
0.232
0.03
0.01
1
1.25
7/16
0.4375
0.452
0.421
5/8
0.625
0.603
0.884
0.828
19/64
0.316
0.278
0.03
0.01
1.125
1.375
1/2
0.5
0.515
0.482
3/4
0.75
0.725
1.061
0.995
21/64
0.348
0.308
0.03
0.01
1.25
1.5
5/8
0.625
0.642
0.605
1 5/16
0.938
0.906
1.326
1.244
27/64
0.444
0.4
0.06
0.02
1.5
1.75
3/4
0.75
0.768
0.729
1 1/8
1.125
1.088
1.591
1.494
1/2
0.524
0.476
0.06
0.02
1.75
2
7/8
0.875
0.895
0.852
1 5/16
1.312
1.269
1.856
1.742
19/32
0.62
0.568
0.06
0.02
2
2.25
1
1
1.022
0.976
1 1/2
1.5
1.45
2.121
1.991
21/32
0.684
0.628
0.09
0.03
2.25
2.5
1 1/8
1.125
1.149
1.098
1 11/16
1.688
1.631
2.386
2.239
3/4
0.78
0.72
0.09
0.03
2.5
2.75
1 1/4
1.25
1.277
1.223
1 7/8
1.875
1.812
2.652
2.489
27/32
0.876
0.812
0.09
0.03
2.75
3
1 3/8
1.375
1.404
1.345
2 1/16
2.062
1.994
2.917
2.738
29/32
0.94
0.872
0.09
0.03
3
3.25
1 1/2
1.5
1.531
1.47
2 1/4
2.25
2.175
3.182
2.986
1
1.036
0.964
0.09
0.03
3.25
3.5

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(IFI FASTENER|ASME B18.2.1 Square Head Bolts)

This Website describes DIN standard Fastener in China.Wenzhou Nanlong Import & Export Trading CO.,LTD.(China)-There are ASME B18.2.1 Square Head Bolts.And the the material are stainless steel (TP304-18-8,316,316L,310S.309S..317L.347H,904L...),carbon steel (C1018 C1022),aluminium,brass, titanium & titanium alloy(Ti G1,Gr2,G4,Gr5,G7) and so no.

ASME B18.2.1 Square Head Bolts