Square Head Bolts | McMaster-Carr

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1,149 Products

Fastening and Joining

Square Head Screws

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

145 products

Set Screws

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

251 products

Socket Head Screws

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

24 products

Wood Screws

Fasten material to wood or pieces of wood to each other

197 products

Tapping Screws

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

215 products

Drywall Screws

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

5 products

Fabricating and Machining

T-Slot Bolts

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

262 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

50 products