Product details
Square head lag bolts offer a large bearing area for positive gripping with an open or adjustable wrench. Length is measured from under the head. Head width or wrench size is measured across the flats. Plain finish, or bare metal, may or may not have a coating of light oil to resist corrosion
The information below lists the required dimensional, chemical and physical characteristics of the fasteners in this purchase order. If the order received does not meet these requirements, it may result in a supplier corrective action request, which could jeopardize your status as an approved vendor. Unless otherwise specified, all referenced consensus standards must be adhered to in their entirety.
Nomial Size or Basic Product Diameter |
E | F | H | R | LT | ||||||||
Full-Size Body Diameter | Width Across Flats | Head Height | Radius of Fillet | Thread Length for Bolts Lengths |
|||||||||
6 in. and Shorter | Over 6 in. | ||||||||||||
Max |
Min |
Basic |
Max |
Min |
Basic | Max | Min |
Max |
Min |
Nom |
|||
1/4 |
0.2500 |
0.260 |
0.237 |
3/8 | 0.375 | 0.362 | 11/64 | 0.188 |
0.156 |
0.03 |
0.01 |
0.750 |
1.000 |
5/16 |
0.3125 |
0.324 |
0.298 |
1/2 | 0.500 |
0.484 |
13/64 |
0.220 | 0.186 |
0.875 |
1.125 |
||
38 | 0.3750 |
0.388 |
0.360 |
9/16 | 0.562 |
0.544 |
1/4 |
0.268 |
0.323 |
1.000 |
1.250 |
||
7/16 |
0.4375 |
0.452 |
0.421 |
5/8 | 0.625 |
0.603 |
19/64 |
0.316 |
0.278 |
1.125 |
1.375 |
||
1/2 |
0.5000 |
0.515 |
0.482 |
3/4 | 0.750 |
0.725 | 21/64 |
0.348 |
0.308 |
1.250 |
1.500 | ||
5/8 |
0.6250 |
0.642 |
0.605 |
15/16 | 0.938 |
0.906 | 27/64 |
0.444 |
0.400 |
0.06 |
0.02 |
1.500 |
1.750 |
3/4 |
0.7500 |
0.768 |
0.729 |
1-1/8 |
1.125 |
1.088 | 1/2 |
0.524 |
0.476 |
1.750 |
2.000 | ||
7/8 |
0.8750 |
0.895 |
0.852 |
1-5/16 |
1.312 |
1.269 |
19/32 |
0.620 | 0.568 |
2.000 |
2.250 |
||
1 | 1.0000 |
1.022 |
0.976 |
1-1/2 |
1.500 |
1.450 |
21/32 |
0.684 |
0.628 |
0.09 |
0.03 |
2.250 |
2.500 |
1-1/8 | 1.1250 |
1.149 |
1.098 |
1-11/16 |
1.688 |
1.631 |
3/4 |
0.780 | 0.720 |
2.500 |
2.750 |
||
1-1/4 | 1.2500 |
1.277 |
1.223 |
1-7/8 |
1.875 |
1.812 | 27/32 |
0.876 |
0.812 |
2.750 |
3.000 | ||
1-3/8 | 1.3750 |
1.404 |
1.345 |
2-1/16 |
2.062 |
1.994 | 29/32 |
0.940 | 0.872 |
3.000 |
3.250 | ||
1-1/2 | 1.5000 |
1.531 |
1.470 |
2-1/4 |
2.250 |
2.175 | 1 | 1.036 |
0.964 |
3.250 |
3.500 |
Specification Requirements:
Dimensions: ASME B18.2.1
Material &Mechanical Properties: ASTM A307, Grade A
Thread Requirements: ASME B1.1, UNC & UNF, Class 2A
Finish:Light Protective Oil
Head Marking: Manufacturer ID and 307A
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