ISO Standard Screws | McMaster-Carr

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Stainless Steel

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Partially Threaded

Threaded on One End

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Tamper-Resistant Torx

Finish

Corrosion-Resistant Coated

Hot-Dipped Galvanized

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Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

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DFARS Specialty Metals

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Compliant with Exemptions

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9,129 Products

Fastening and Joining

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

Hex Head Screws

Hex Head Screws

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

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

Shoulder Screws

Shoulder Screws

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

Oval Head Screws

Oval Head Screws

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

Carriage Bolts

A smooth head provides a finished look while a square neck keeps the bolt in place when using a nut

Tapping Screws

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

Single-End Studs

Single-End Studs

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

Magnets

Attract or repel metal objects to hang, secure, or position them

L-Keys

Turn fasteners from either end and reach into tight spots

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

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