Machine Screws | McMaster-Carr

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36,687 Products

Fastening and Joining

Rounded Head Screws

Rounded Head Screws

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

10,407 products

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Socket Head Screws

Socket Head Screws

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

Hex Head Screws

Hex Head Screws

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

Tapping Screws

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

Fastener Assortments

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

12-Point Screws

12-Point Screws

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

Square Head Screws

Square Head Screws

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

Pentagon Head Screws

Pentagon Head Screws

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

Fabricating and Machining

T-Tracks

Add fixturing to flat surfaces on machines such as table saws, CNC routers, and drill presses

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)