5/16"-24 Bolts | McMaster-Carr

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Threaded on Both Ends

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Finish

Zinc Yellow-Chromate Plated

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Drive Style

Spring Plunger Driver

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Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

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Unified Standard Class 1A

Unified Standard Class 2A

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Unified Standard Class 3A

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

Yes

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Export Control Classification Number (ECCN)

EAR99

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1,012 Products

Fastening and Joining

Hex Head Screws

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

159 products

Socket Head Screws

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

94 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

Flat Head Screws

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

43 products

Rounded Head Screws

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

49 products

Shoulder Screws

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

85 products

Thumb Screws

Tighten and loosen by hand without the need for tools

27 products

Set Screws

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

112 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

134 products

Weld Nuts

Weld to metal surfaces to add permanent threads

17 products

Rivet Nuts

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

5 products

Spring Plungers

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

2 products

Fabricating and Machining

Clamp Holding Screw Tips

Cover metal holding screws to protect workpieces from scratches

1 product

Gear and Bearing Puller Forcing Screws

Replace forcing screws on gear and bearing pullers

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

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

76 products

Lead Screw Collars

Position components and limit travel along a lead screw

10 products

End Supports for Ball Screws and Precision Lead Screws

Brace and secure the ends of ball screws and precision lead screws

2 products

Material Handling

Eyebolts

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

4 products