External Square Nuts | McMaster-Carr

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System of Measurement

Thread Size

Nut Type

Tamper Resistant

Material

Stainless Steel

Width

Finish

Black Zinc Plated

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Thread Type

Thread Pitch

Thread Direction

Thread Spacing

Drive Style

Drilled Spanner

External 12-Point

External Square

Fastener Strength Grade/Class

Specifications Met

Fastener Strength Rating

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

Thread Fit

Metric Class 6H

Metric Class 7H

Unified Standard Class 2B

Cap Nut Profile

Performance

Corrosion Resistant

Metal Detectable

X-Ray Detectable

Color

Maximum Temperature

2,000° F or greater

Tensile Strength

10,000 psi to 19,999 psi

Diameter

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168 Products

Square Nuts

Low-Strength Steel Square Nuts

Low-Strength Steel Square Nuts

About half the strength of medium-strength steel for light duty fastening

Medium-Strength Steel Square Nuts

Medium-Strength Steel Square Nuts

Suitable for fastening most machinery and equipment

Medium-Strength Steel Thin-Profile Square Nuts

Two-thirds the height of standard nuts for low-clearance areas

18-8 Stainless Steel Square Nuts

18-8 Stainless Steel Square Nuts

Resist corrosion where moisture and chemicals are present

18-8 Stainless Steel Thin-Profile Square Nuts

Use in low-clearance areas where moisture and chemicals are present

Super-Corrosion-Resistant 316 Stainless Steel Square Nuts

Super-Corrosion-Resistant 316 Stainless Steel Square Nuts

Withstand harsh chemicals better than 18-8 stainless steel

Ultra-High-Temperature Carbon Fiber Square Nuts

Ultra-High-Temperature Carbon Fiber Square Nuts

Won't warp in extreme-heat applications such as furnace fixtures

Brass Square Nuts

Brass Square Nuts

Conductive and nonmagnetic for securing electrical equipment

Fiberglass Square Nuts

Fiberglass Square Nuts

Chemical resistant, nonconductive, and lightweight

Other Products

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Tamper-Resistant Nuts

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

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