1/2"-20 Nuts | McMaster-Carr

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System of Measurement

Thread Size

4-40 to 5/16"-32

Material

Silicone Rubber

Stainless Steel

Nut Type

Tamper Resistant

Hex Nut Profile

Fastener Strength Grade/Class

Finish

Cadmium Yellow-Chromate Plated

Dry Film Lubricated

Nickel Chrome Plated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Thread Direction

Width

Height

Thread Type

UN/UNF (SAE 45°)

Thread Spacing

Performance

Chemical Resistant

Corrosion Resistant

High Temperature

Vibration Resistant

Fastener Strength Rating

Locking Type

Distorted Thread

Two-Piece Clamp

Specifications Met

Federal Specification

Thread Fit

Metric Class 6g

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3B

Flange Diameter

Length

Thread Pitch

Drive Style

External 12-Point

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

Color

REACH

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527 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

Locknuts

Hold fasteners in place to prevent loosening from vibration

Flange Nuts

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

Coupling Nuts

Connect and extend threaded rods

Cap Nuts

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

Lug Nuts

Secure pneumatic wheels to axles

Easy to tighten and loosen by hand for making frequent adjustments

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

Tamper-Resistant Nuts

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

Weld Nuts

Weld to metal surfaces to add permanent threads

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

Rivet Nut Tools

Rivet Nut Tools

Install rivet nuts

Power Transmission

Shock Absorber Mounting Nuts

Shock Absorber Mounting Nuts

Secure shock absorbers after threading them into mounting blocks

Lead Screws and Nuts

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

Fluid Handling

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Building and Machinery Hardware

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

Material Handling

Turnbuckle Bodies

Turnbuckle Bodies

Pair with end fittings to create a custom turnbuckle

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