Square Head Screws | McMaster-Carr

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1,009 Products

Fastening and Joining

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

Square Head Screws

Square Head Screws

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

Wood Screws

Fasten material to wood or pieces of wood to each other

Tapping Screws

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

Socket Head Screws

Socket Head Screws

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

Drywall Screws

Fasten panels of drywall to materials such as wood, metal, and drywall

Fabricating and Machining

T-Slot Bolts

Secure clamps and workpieces to machine tables with quicker setup than a T-slot nut and stud

T-Slot Nut and Setup Stud Kits

T-Slot Nut and Setup Stud Kits

Mount fixtures of different sizes to your machine table

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