Black-Oxide Stainless Steel Nuts | McMaster-Carr

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Finish

Material

18-8 Stainless Steel

316 Stainless Steel

Washer Material

400 Series Stainless Steel

Thread Size

Nut Type

System of Measurement

Hex Nut Profile

Height

Width

Thread Direction

Thread Pitch

Performance

Corrosion Resistant

Vibration Resistant

Locking Type

Thread Type

Thread Spacing

Thread Fit

Metric Class 6H

Unified Standard Class 2B

Specifications Met

Drive Style

External Square

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

Length

Screw Size

Insert Maximum Temperature

Flange Diameter

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549 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

Locknuts

Hold fasteners in place to prevent loosening from vibration

Cap Nuts

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

Flange Nuts

The flange distributes pressure, so you don't need a washer

Easy to tighten and loosen by hand for making frequent adjustments

Panel Nuts

Extremely thin for tight spots such as electrical panels; also known as dress nuts

Square Nuts

Flat sides won’t spin in channels and square holes

Coupling Nuts

Connect and extend threaded rods

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Lock Washers

Resist vibration to prevent fasteners from loosening

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