5/16"-24 Screws | McMaster-Carr

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Thread Size

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Material

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Threading

Threaded on Both Ends

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Zinc Yellow-Chromate Plated

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Spring Plunger Driver

Torx Plus

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Socket Head Profile

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Fastener Strength Grade/Class

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Head Diameter

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Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

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Right Hand and Left Hand

Specifications Met

ASME Standard

ASTM Standard

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Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

DFARS Specialty Metals

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Compliant with Exemptions

Tip Type

Export Control Classification Number (ECCN)

REACH

979 Products

Fastening and Joining

Socket Head Screws

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

92 products

Hex Head Screws

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

152 products

Rounded Head Screws

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

49 products

Flat Head Screws

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

43 products

Set Screws

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

112 products

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

61 products

12-Point Screws

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

19 products

Thumb Screws

Tighten and loosen by hand without the need for tools

27 products

Single-End Studs

Use the unthreaded end as a pivot point, hinge, shaft, or locator pin

13 products

Threaded Rods

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

95 products

Thread Adapters

Join threads of a different type, size, and gender

196 products

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

6 products

Weld Nuts

Weld to metal surfaces to add permanent threads

17 products

Spring Plungers

Apply accurate, consistent pressure for positioning, indexing, and ejecting parts

2 products

Fabricating and Machining

Lathe Tool Insert Holder Replacement Parts

Replace clamps, screws, shims, and other parts in lathe tool insert holders

4 products

Gear and Bearing Puller Forcing Screws

Replace forcing screws on gear and bearing pullers

2 products

Grippers

Clamp against uneven or irregularly shaped parts such as castings for a secure hold

2 products

Fixture Clamps

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

2 products

Power Transmission

Connecting Rods

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

59 products

Lead Screws and Nuts

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

10 products

Lead and Ball Screw End Supports

Brace and secure the ends of lead screws and ball screws

2 products

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

3 products

Material Handling

Eyebolts

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

4 products

Measuring and Inspecting

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

2 products