7/16"-20 Fasteners | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Threading

Threaded on Both Ends

Fastener Strength Grade/Class

Fastener Head Type

Finish

Cadmium Yellow-Chromate Plated

Zinc Yellow-Chromate Plated

Thread Spacing

Thread Type

UN/UNF (SAE Straight)

Thread Direction

Right Hand and Left Hand

Nut Type

Drive Style

Thread Fit

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

Head Width

1/2"

5/8"

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

REACH

RoHS

Compliant with Exemptions

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

Head Height

Specifications Met

Width

Socket Head Profile

Hex Nut Profile

553 Products

Fastening and Joining

Hex Head Screws

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

98 products

Socket Head Screws

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

48 products

Rounded Head Screws

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

1 product

12-Point Screws

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

8 products

Flat Head Screws

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

13 products

Set Screws

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

28 products

Hex Nuts

Handle most general fastening needs

46 products

Flange Nuts

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

15 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

4 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

35 products

Lug Nuts

Secure pneumatic wheels to axles

1 product

Coupling Nuts

Connect and extend threaded rods

9 products

Socket Nuts

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

1 product

Cap Nuts

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

7 products

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

1 product

Square Nuts

Flat sides won’t spin in channels and square holes

1 product

Thread Adapters

Join threads of a different type, size, and gender

14 products

Threaded Inserts

Create new threads or repair stripped threads

62 products

Weld Nuts

Weld to metal surfaces to add permanent threads

22 products

Threaded Rods

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

47 products

Taper Pins

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

18 products

Threaded Insert Installation Tools

Install helical, key-locking, slotted-drive, and other threaded inserts

22 products

Fluid Handling

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

9 products

Power Transmission

Hydraulic Cylinder Mounts

Restrain cylinders and secure loads to the end of the rod

1 product

Connecting Rods

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

29 products

Material Handling

Eyebolts

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

4 products

Fabricating and Machining

Fixture Clamps

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

18 products

Building and Machinery Hardware

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

2 products