7/16"-20 Fasteners | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Stainless Steel

Threading

Partially Threaded

Threaded on Both Ends

Fastener Strength Grade/Class

Fastener Head Type

Finish

Cadmium Yellow-Chromate Plated

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Thread Spacing

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Thread Direction

Right Hand and Left Hand

Nut Type

Drive Style

External 12-Point

External Square

Thread Fit

Metric Class 6H

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

Head Width

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Specifications Met

Fed. Spec. FF-N-836

Export Control Classification Number (ECCN)

Head Height

Width

Hex Nut Profile

Drive Size

Height

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543 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Socket Head Screws

Socket Head Screws

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

Rounded Head Screws

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

12-Point Screws

12-Point Screws

12 contact points handle more torque than a hex head while a flange eliminates the need for a washer

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish that won't snag on surrounding parts

Set Screws

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

Hex Nuts

Handle most general fastening needs

Flange Nuts

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

Locknuts

Hold fasteners in place to prevent loosening from vibration

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

Easy to tighten and loosen by hand for making frequent adjustments

Lug Nuts

Secure pneumatic wheels to axles

Coupling Nuts

Connect and extend threaded rods

Socket Nuts

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

Cap Nuts

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

Square Nuts

Flat sides won’t spin in channels and square holes

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Weld Nuts

Weld to metal surfaces to add permanent threads

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

Taper Pins

Fit snugly into tapered holes to secure, position, and align components

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

Material Handling

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

Fabricating and Machining

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

Power Transmission

Hydraulic Cylinder Mounts

Hydraulic Cylinder Mounts

Restrain cylinders and secure loads to the end of the rod

Connecting Rods

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

Building and Machinery Hardware

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

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