Square Head Screws | McMaster-Carr

Filter by

System of Measurement

Thread Size

Length

Fastener Head Type

Tip Type

Material

Stainless Steel

Head Width

Drive Style

External Square

Threading

Partially Threaded

Head Height

Finish

Phosphate Coated

Zinc Yellow-Chromate Plated

Fastener Strength Grade/Class

Screw Size

Thread Type

Hardness

Specifications Met

Thread Pitch

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

Thread Fit

Metric Class 6g

Metric Class 6h

Unified Standard Class 2A

Unified Standard Class 3A

RoHS

Thread Length

For Use In

Stainless Steel

Drive Size

How can we improve?

1,104 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

Fixture Kits

Everything needed to mount workpieces 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.)