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4", 18-8, 10

US Fasteners, 4", 18-8, 10

Hex bolt

Hex bolts

Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.

Machine screw

Machine screws

Screws with machine threads for use with a nut or in a tapped hole.

Carriage bolt

Carriage bolts & Plow bolts

Bolts with no drive and machine threads for use with a nut.

Lag bolt

Lag bolts

Large wood screws technically called lag screws.

Eye bolts

Eye bolts & Screw eyes

Bolts or screws with a circular ring on the head.

Shoulder bolt

Shoulder bolts

Screws with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper bolts.