Bolt kereta (kepala bulat dengan leher persegi) biasanya digunakan dalam sambungan kayu. Leher persegi di bawah kepala bulat akan duduk ke dalam lubang di dalam kayu untuk menghalang kepala dari berpaling. Kerana ia digunakan dengan kayu, bolt kereta jarang kekuatan tinggi dan hampir selalu dibekalkan dalam spesifikasi ASTM A307 standard.
Panjang benang standard
Panjang bolt ≤ 6 ": panjang benang = (diameter 2 x) + 1/4"
Panjang bolt> 6 ": panjang benang = (diameter 2 x) + 1/2 ″
Nota: Bolt pengangkutan stok yang paling banyak diimport mempunyai panjang benang 6 "dan diikat sepenuhnya apabila panjang bolt adalah 6" atau pendek
er
|
Bolt Diameter
|
D
|
C
|
H
|
P
|
F
|
|
Body Diameter
|
Head Diameter
|
Head Height
|
Square Width
|
Square Depth
|
|
Max
|
Min
|
Max
|
Min
|
Max
|
Min
|
Max
|
Min
|
Max
|
Min
|
|
1⁄2
|
0.515
|
0.483
|
1.094
|
1.032
|
0.270
|
0.250
|
0.515
|
0.492
|
0.281
|
0.250
|
|
5⁄8
|
0.642
|
0.605
|
1.344
|
1.219
|
0.344
|
0.313
|
0.642
|
0.616
|
0.344
|
0.313
|
|
3⁄4
|
0.768
|
0.729
|
1.594
|
1.469
|
0.406
|
0.375
|
0.768
|
0.741
|
0.406
|
0.375
|
|
7⁄8
|
0.895
|
0.852
|
1.844
|
1.719
|
0.469
|
0.438
|
0.895
|
0.865
|
0.469
|
0.438
|
|
1
|
1.022
|
0.976
|
2.094
|
1.969
|
0.531
|
0.500
|
1.022
|
0.990
|
0.531
|
0.500
|
|
11⁄4*
|
1.277
|
|
2.850
|
|
0.531
|
0.500
|
1.250
|
|
0.625
|
|
|
*Dimensions per ASME B18.5 1990 (R 1998) cover diameters up to 1". Bolts over 1" use custom head dimensions.
|
|
Length (in.)
|
Diameter
|
|
3/8"
|
1/2"
|
|
Galvanized
|
|
3
|
-
|
19060
|
|
4
|
-
|
19065
|
|
6
|
19026
|
19074
|
|
8
|
19033
|
19082
|
|
These sizes are readily available in the marketplace and Portland Bolt stocks many of them in varying quantities. If you require a size that is not listed, Portland Bolt will manufacture them.
|
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