Machine Screws | McMaster-Carr

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Export Control Classification Number (ECCN)

41,141 Products

Fastening and Joining

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

10,439 products

Flat Head Screws

Fit in countersunk holes for a flush finish that won't snag on surrounding parts

6,262 products

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

7,992 products

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

11,770 products

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

2,317 products

Oval Head Screws

The domed top sits slightly above the surface of countersunk holes for a decorative look

307 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

10 products

Thumb Screws

Tighten and loosen by hand without the need for tools

1,551 products

12-Point Screws

12 contact points handle more torque than a hex head while a flange eliminates the need for a washer

208 products

Square Head Screws

Turn the large flat sides with a wrench into square holes that stop further rotation

145 products

Masonry and Concrete Screws

Anchor parts to masonry and concrete without tapping the hole first

39 products

Pentagon Head Screws

Create a tamper-resistant joint with a head than can only be removed with a 5-point socket

17 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Fabricating and Machining

T-Tracks

A versatile foundation for custom fixturing setups

4 products