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hex lag screw

Hex Lag Screw

Hex lag screws are large wood screws. Although the term “lag bolt” is often used to describe this product, technically they are a screw since lags are installed in wood by rotating the six-sided head. The lag thread is deeper and sharper than national coarse thread since it is designed to drive into wood and not to be used with a nut. Imported hex lag screws normally originate from Asia, possess a gimlet point, and meet the requirements of ASTM A307 Grade A. Portland Bolt can manufacture lag screws to meet other ASTM specifications or when the project requires domestically manufactured lag screws.

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Description

Hex Lag Screw

Hex lag screws are large wood screws. Although the term “lag bolt” is often used to describe this product, technically they are a screw since lags are installed in wood by rotating the six-sided head.

Lag screws come in 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO, and SAE specifications.

Diameters: 1/2″ – 3/4″
Grade: ASTM A307
Lengths: 18″ maximum
Origin: Import
Finish: Plain and hot-dip galvanized

The minimum thread length shall be equal to one-half the nominal screw length plus 1/2″ or 6”, whichever is less. One should consider longer than standard thread lengths for lag screws which are extremely long.

Note: Hex lag screws larger than 3/4″ in diameter and all square lag screws are rarely available in the marketplace as a stock item.

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