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Hex Lag Screws

Hex Lag Screws


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Hex Lag Screws

Hex Lag Screws are manufactured from low carbon steel to meet SAE J429 Grade 1. Lag screws longer than 12 inches will have a minimum thread length of 50% of the screw length up to a maximum of 8 inches. Zinc plated material will meet or exceed ASTM F1941. Hot-Dip Galvanized material will meet or exceed ASTM A153. Typical hardness is HRB 70-100. Tensile strength (not pull out) will meet a minimum of 60,000 psi.

 
 Hex Lag Screws
Diameter Threads
Per Inch
Body or
Shoulder
Diameter
Width Across Flats Width Across
Corners
Head Height Shoulder
Length
Max. Min Basic Max. Min. Max. Min. Basic Max. Min. Min.
No. 10 0.1900 11 0.199 0.178 9/32 0.281 0.271 0.323 0.309 1/8 0.140 0.110 0.094
1/4 0.2500 10 0.260 0.237 7/16 0.438 0.425 0.505 0.484 11/64 0.188 0.150 0.094
5/16 0.3125 9 0.324 0.298 1/2 0.500 0.484 0.577 0.552 7/32 0.235 0.195 0.125
3/8 0.3750 7 0.388 0.360 9/16 0.562 0.544 0.650 0.620 1/4 0.268 0.226 0.125
7/16 0.4375 7 0.452 0.421 5/8 0.625 0.603 0.722 0.687 19/64 0.316 0.272 0.156
1/2 0.5000 6 0.515 0.482 3/4 0.750 0.725 0.866 0.826 11/32 0.364 0.302 0.156
5/8 0.6250 5 0.642 0.605 15/16 0.938 0.906 1.083 1.033 27/64 0.444 0.378 0.312
3/4 0.7500 4 1/2 0.768 0.729 1 1/8 1.125 1.088 1.299 1.240 1/2 0.524 0.455 0.375
7/8 0.8750 4 0.895 0.852 1 5/16 1.312 1.269 1.516 1.447 37/64 0.604 0.531 0.375

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