12-24 Fasteners | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Stainless Steel

Fastener Head Type

Drive Style

Drilled Spanner

Tamper-Resistant Hex

Tamper-Resistant Torx

Tamper-Resistant Torx Plus

Head Diameter

Threading

Partially Threaded

Finish

Black Zinc Plated

Corrosion-Resistant Coated

Galvanic Barrier Coated

Phosphate Coated

Tin Zinc Plated

Ultra-Corrosion-Resistant Coated

Screw Size

Flat Head Profile

Rounded Head Style

Tip Type

Thread Spacing

Drive Size

Thread Type

For Use In

Stainless Steel

Thread Direction

Screw Features

Thread Fit

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

Socket Head Profile

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

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496 Products

Fastening and Joining

Rounded Head Screws

Rounded Head Screws

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

Flat Head Screws

Flat Head Screws

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

Socket Head Screws

Socket Head Screws

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

Hex Head Screws

Hex Head Screws

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

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

Wood Screws

Fasten material to wood or pieces of wood to each other

Oval Head Screws

Oval Head Screws

The domed top sits slightly above the surface of countersunk holes for a decorative look

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

Locknuts

Hold fasteners in place to prevent loosening from vibration

Easy to tighten and loosen by hand for making frequent adjustments

Cap Nuts

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

Coupling Nuts

Connect and extend threaded rods

Flange Nuts

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

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Rivet Nuts

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

Push Nuts

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

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

Press-Fit Nuts

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

Threaded Rods

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

Binding Barrel Posts and Screws

Binding Barrel Posts and Screws

Thread together for a low-profile fastener

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Rivet Nut Tools

Rivet Nut Tools

Install rivet nuts

Material Handling

Turnbuckles

Twist the body or end fittings to adjust the length and tension of attached rope and chain

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