ASME B18.2.1 Hex Cap Screws

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ASME B18.2.1 Hex Cap Screws

 



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ASME B18.2.1 Hex Cap Screws

ASME B18.2.1 Hex Cap Screws



Dimensions of Hex Cap Screws
Thread Length for
Screw Leng ths, LT
(See Para. 4.7)
Transition Thread
Leng th, Y
See Para. 4.7)
Maximum
Total Runout
of Bearing
Surface FIM
(See Para. 4.4)
Nominal Size
or Basic
Product
Diameter
Body
Diameter, E
(See Para. 4.6)
Width Across Flats, F (See Para. 2.1.2)
Width Across Corners, G
Head Height, H
Minimum Wrenching Height,
6 in. and Shorter
Over 6 in.
Reference
Max.
Min.
Basic
Max.
Min.
Max.
Min.
Basic
Max.
Min.
1/4
0.25
0.25
0.245
7/16
0.438
0.428
0.505
0.488
5/32
0.163
0.15
0.106
0.75
1
0.25
0.01
5/16
0.313
0.3125
0.3065
1/2
0.5
0.489
0.577
0.557
13/64
0.211
0.195
0.14
0.875
1.125
0.278
0.011
3/8
0.375
0.375
0.369
9/16
0.562
0.551
0.65
0.628
15/64
0.243
0.226
0.16
1
1.25
0.312
0.012
7/16
0.438
0.4375
0.4305
5/8
0.625
0.612
0.722
0.698
9/32
0.291
0.272
0.195
1.125
1.375
0.357
0.013
1/2
0.5
0.5
0.493
3/4
0.75
0.736
0.866
0.84
5/16
0.323
0.302
0.215
1.25
1.5
0.385
0.014
9/16
0.563
0.5625
0.5545
13/16
0.812
0.798
0.938
0.91
23/64
0.371
0.348
0.25
1.375
1.625
0.417
0.015
5/8
0.625
0.625
0.617
15/16
0.938
0.922
1.083
1.051
25/64
0.403
0.378
0.269
1.5
1.75
0.455
0.017
3/4
0.75
0.75
0.741
1 1/8
1.125
1.1
1.299
1.254
15/32
0.483
0.455
0.324
1.75
2
0.5
0.02
7/8
0.875
0.875
0.866
1 5/16
1.312
1.285
1.516
1.465
35/64
0.563
0.531
0.378
2
2.25
0.556
0.023
1
1
1
0.99
1 1/2
1.5
1.469
1.732
1.675
39/64
0.627
0.591
0.416
2.25
2.5
0.625
0.026
1 1/8
1.125
1.125
1.114
1 11/16
1.688
1.631
1.949
1.859
11/16
0.718
0.658
0.461
2.5
2.75
0.714
0.029
1 1/4
1.25
1.25
1.239
1 7/8
1.875
1.812
2.165
2.066
25/32
0.813
0.749
0.53
2.75
3
0.714
0.033
1 3/8
1.375
1.375
1.363
2 1/16
2.062
1.994
2.382
2.273
27/32
0.878
0.81
0.569
3
3.25
0.833
0.036
1 1/2
1.5
1.5
1.488
2 1/4
2.25
2.175
2.598
2.48
15/16
0.974
0.902
0.64
3.25
3.5
0.833
0.039
1 5/8
1.625
1.625
1.613
2 7/16
2.438
2.356
2.815
2.686
1
1.038
0.962
0.694
3.5
3.75
0.909
0.043
1 3/4
1.75
1.75
1.738
2 5/8
2.625
2.538
3.031
2.893
1 3/32
1.134
1.054
0.748
3.75
4
1
0.046
1 7/8
1.875
1.875
1.863
2 13/16
2.812
2.719
3.248
3.099
1 5/32
1.198
1.114
0.802
4
4.25
1
0.049
2
2
2
1.988
3
3
2.9
3.464
3.306
1 7/32
1.263
1.175
0.825
4.25
4.5
1.111
0.052
2 1/4
2.25
2.25
2.238
3 3/8
3.375
3.262
3.897
3.719
1 3/8
1.423
1.327
0.933
5
1.111
0.059
2 1/2
2.5
2.5
2.488
3 3/4
3.75
3.625
4.33
4.133
1 17/32
1.583
1.479
1.042
5.5
1.25
0.065
2 3/4
2.75
2.75
2.738
4 1/8
4.125
3.988
4.763
4.546
1 11/16
1.744
1.632
1.151
6
1.25
0.072
3
3
3
2.988
4 1/2
4.5
4.35
5.196
4.959
1 7/8
1.935
1.815
1.29
6.5
1.25
0.079

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(IFI FASTENER|ASME B18.2.1 Hex Cap Screws)

This Website describes DIN standard Fastener in China.Wenzhou Nanlong Import & Export Trading CO.,LTD.(China)-There are ASME B18.2.1 Hex Cap Screws.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 Hex Cap Screws