Printable Version (PDF)

Fastener Categories













Wood Screws

Screws with a smooth shank and tapered point for use in wood.

Abbreviated WS Machine Screws

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

Abbreviated MS Thread Cutting Machine Screws

Machine screws with a thread cutting (self tapping) point. Sheet Metal Screws

Fully threaded screws with a point for use in sheet metal.

Abbreviated SMS







Self Drilling SMS

A Sheet metal screw with a self drilling point. Hex Bolts

Bolts with a hexagonal head with threads for use with a nut or tapped hole.

Abbreviated HHMB or HXBT Carriage Bolts

Bolts with a smooth rounded head that has a small square section underneath. Lag Bolts

Bolts with a wood thread

and pointed tip.

Abbreviated Lag













Flange Bolts

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

Socket screws, also known as Allen head, are fastened with a hex Allen wrench. Eye Bolts

A bolt with a circular ring on the head end. Used for attaching rope or chain. Eye Lags

Similar to an eye bolt but with wood threads instead of machine thread.

U-Bolts

Bolts in U shape for attaching to pipe or other round surfaces. Also available with a square bend. J-Bolts

J shaped bolts are used for tie-downs or as an open eye bolt. Shoulder Bolts

Shoulder bolts (also known as stripper bolts) are used to create a pivot point. Elevator Bolts

Elevator bolts are often used in conveyor systems. They have a large, flat head.