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5/16" x 1-1/4", US, Zinc

US Fasteners, 5/16" x 1-1/4", Zinc

Sheet metal screw

Sheet metal screws

Screws with large threads for use in sheet metal sometimes also used in plastic, fiberglass or wood.

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.

Flange bolts

Flange bolts

Flange bolts have a flange on the bottom of the head that distributes the load like a washer.

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.

Socket product

Socket screws

Screws with an Allen wrench drive.

Elevator bolt

Elevator bolts

Bolts with a very large flat head and machine threads for use with a nut.

Thumb screws

Thumb screws

Provides a grip for where hand loosening or tightening is needed. Commonly used in applications such as access panels and where frequent adjustment is required.