ASME B18.3 Underhead Fillets for Socket Head Cap Screws



Dimensions of Underhead Fillets for Socket Head Cap Screws
Nominal Screw Size
N
F
F
R
D
Thread to Head Screw
Fillet Juncture Diameter at Bearing Surface
Fillet Length
Juncture Radius
Full Body Unthreaded Length Body Diameter
Min
Max
Min
Max
Min
Max
Min
0
0.0600
0.051
0.074
0.062
0.012
0.002
0.0600
0.0560
1
0.0730
0.061
0.087
0.075
0.012
0.003
0.0730
0.0695
2
0.0860
0.073
0.102
0.090
0.014
0.003
0.0860
0.0822
3
0.0990
0.084
0.115
0.102
0.014
0.004
0.0990
0.0949
4
0.1120
0.094
0.130
0.117
0.015
0.004
0.1120
0.1075
5
0.1250
0.107
0.145
0.132
0.017
0.005
0.1250
0.1202
6
0.1380
0.116
0.158
0.144
0.017
0.005
0.1380
0.1329
8
0.1640
0.142
0.188
0.172
0.020
0.006
0.1640
0.1585
10
0.1900
0.160
0.218
0.202
0.024
0.006
0.1900
0.1840
1/4
0.2500
0.215
0.278
0.261
0.024
0.007
0.2500
0.2435
5/16
0.3125
0.273
0.347
0.329
0.029
0.009
0.3125
0.3053
3/8
0.3750
0.331
0.415
0.397
0.034
0.012
0.3750
0.3678
7/16
0.4375
0.388
0.484
0.465
0.039
0.014
0.4375
0.4294
1/2
0.5000
0.446
0.552
0.531
0.044
0.016
0.5000
0.4919
5/8
0.6250
0.562
0.689
0.664
0.054
0.021
0.6250
0.6163
3/4
0.7500
0.681
0.828
0.800
0.066
0.025
0.7500
0.7406
7/8
0.8750
0.798
0.963
0.932
0.075
0.031
0.8750
0.8647
1
1.0000
0.914
1.100
1.068
0.085
0.034
1.0000
0.9886
1-1/8
1.1250
1.023
1.235
1.198
0.094
0.039
1.1250
1.1086
1-1/4
1.2500
1.148
1.370
1.333
0.102
0.044
1.2500
1.2336
1-3/8
1.3750
1.256
1.505
1.466
0.110
0.048
1.3750
1.3568
1-1/2
1.5000
1.381
1.640
1.601
0.119
0.052
1.5000
1.4818
1-3/4
1.7500
1.609
1.910
1.869
0.136
0.062
1.7500
1.7295
2
2.0000
1.843
2.180
2.128
0.153
0.071
2.0000
1.9780
2-1/4
2.2500
2.093
2.450
2.398
0.170
0.080
2.2500
2.2280
2-1/2
2.5000
2.324
2.720
2.662
0.187
0.088
2.5000
2.4762
2-3/4
2.7500
2.574
2.990
2.936
0.204
0.097
2.7500
2.7262
3
3.0000
2.824
3.260
3.206
0.221
0.106
3.0000
2.9762
3-1/4
3.2500
3.073
3.530
3.476
0.238
0.114
3.2500
3.2262
3-1/2
3.5000
3.323
3.800
3.746
0.255
0.124
3.5000
3.4762
3-3/4
3.7500
3.573
4.070
4.016
0.272
0.134
3.7500
3.7262
4
4.0000
3.823
4.340
4.288
0.289
0.143
4.0000
3.9762

Tags: ASME B18.3 Underhead Fillets for Socket Head Cap Screws

General Material:Stainless Steel,Nickel Alloy,Silicon Bronze,Aluminium Bronze,Brass,Naval Brass,Coppe,Copper-Nickel,Aluminum Alloy,Titanium,Alloy Steel,Such as C1008,C1018,C1022,C1035,C1045,40cr,SCM435,35crmoA,42crmoA,AISI4140SS304/A2-70,SS316/A4-80,SS310s,SS309,SS321,SS410,SS317,SS904L,17-4 PH/630,Duplex 2205,Duplex 31803,Nitronic 40,Nitronic 50,Nitronic 60,Nickel Alloy,Hastelloy C276,Inconel 600,Inconel 601,Inconel 625,Inconel 718,Inconel X750,Inconel 800H,Inconel 825,Monel 400,Monel 405,Monel K-500,MP35N,Nickel 200,Nickel 201,Waspaloy)C65500,C64200,C61400,C63000,C63200,C46200,H59,H62,H67,C46400,C11000,90/10 C70600,70/30 C71500,6061-T6,2024-T4,Ti-6Al-4V Grade 5,ASTM B348 Grade 2,ASTM B348 Grade 7,651/S63198
General Surface Finish:Blackoxide,Zinc,Dacromet 500/Dacromet 320,Non-electrolytically Deposited Zinc Flake,Hot-dip Galvanization,Phosphating,Passviation