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Unit:inch

Askew Head Bolts [Table 4] (ASTM A307 / A354 / A394)

ASME B 18.2.1 (T4) - 2012

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美标ASME B18.2.1 (T4) - 2012 ASME18.2.1 18 Askew Head Bolts [Table 4] (ASTM A307 / A354 / A394)
Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
×

Choose materials based on density.(g/cm3)

  • Carbon Steel 7.85
  • Stainless Steel 8.1
  • Stainless Steel 7.95
  • Stainless Steel 7.7
  • Titanium Alloy 4.5
  • Aluminum Alloy 2.8
  • Copper 8.89


Select here or enter material density on the calculation page.
Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.
Thread Size
d
3/8 1/2 5/8 3/4 7/8 1
d
PP UNC
ds max
min
s Basic
max
min
e max
min
k1 max
min
k Ref.
r max
min
b Ref L≤6
L＞6
S max
0.3750 0.5000 0.6250 0.7500 0.8750 1.0000
16 13 11 10 9 8
0.388 0.515 0.642 0.768 0.895 1.022
0.36 0.482 0.605 0.729 0.852 0.976
9/16 3/4 15/16 1-1/8 1-5/16 1-1/2
0.562 0.75 0.938 1.125 1.312 1.5
0.544 0.725 0.906 1.088 1.269 1.45
0.795 1.061 1.326 1.591 1.856 2.121
0.747 0.995 1.244 1.494 1.742 1.991
0.317 0.411 0.52 0.614 0.723 0.801
0.277 0.371 0.48 0.574 0.683 0.761
0.25 0.328 0.422 0.5 0.594 0.656
0.03 0.03 0.06 0.06 0.06 0.09
0.01 0.01 0.02 0.02 0.02 0.03
1 1.25 1.5 1.75 2 2.25
1.25 1.5 1.75 2 2.25 2.5
0.25 0.312 0.344 0.406 0.438 0.5
Weight of per 1000 steel products(≈kg) Reference only
- - - - - -
Length of Thread b Reference only
- - - - - -
①,Thread Length. All askew head bolts of nominal lengths equal to or shorter than the nominal thread length, b, plus the unthreaded length, S, shall be threaded for full length. The distance from the bearing surface of the head, as measured at mid height of head to the last scratch of thread, shall not exceed S. The distance from the bearing surface of the head, as measured at mid height, to the first complete (full form) thread, as measured with a nonchamfered GO thread ring gage assembled by hand as far as the thread will permit, shall not exceed S plus a length of 2½ threads.
②,Thread Series. Askew head bolts are only available with unified course (UNC) threads.
③,b is a reference dimension tntended for calculation purposes only. When screw length L ≤ 6 in，b=2d+0.25；when L＞6 in，b=2d+0.5 。

Alternative history

ASME B 18.2.1T4 - 2010 ASME B 18.2.1T4 - 2012
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