ASTM A574 Socket Head Screws

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About Socket Head Screws

Alloy Steel Socket Head Screws

The standard for high-strength fastening.

Torx Alloy Steel Socket Head Screws

A Torx-Plus drive has more points of contact than a hex drive, allowing you to tighten these screws with less slippage or damage to the recess.

Left-Hand Threaded Alloy
Steel Socket Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening.

Alloy Steel Low-Profile Socket Head Screws

Made of alloy steel, these low-profile screws are nearly twice as strong as their stainless steel counterparts. With half the height of a standard socket head, these low-profile screws fit in tight spaces.

Alloy Steel Thread-Locking Socket Head Screws

With a tensile strength of 170,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and are nearly two and a half times stronger than stainless steel thread-locking screws. They have a thread locker to prevent loosening from vibration.

Socket Head Screws with Flat Washer

A freely rotating washer distributes pressure over a wider area than a flange, preventing damage to your material's surface.

Nylon-Tip Alloy Steel Socket Head Screws

Nonconductive and softer than brass, the nylon tip reduces vibration and eliminates damage from metal touching metal.

Brass-Tip Alloy Steel Socket Head Screws

The nonmarring brass tip is electrically conductive and harder than nylon, but soft enough to conform to most surfaces and reduce damage from metal-on-metal contact.

Alloy Steel Shoulder Screws

Comparable in strength to Grade 8 steel. These screws have inch thread sizes.

Alloy Steel Shoulder Screws
with Material Certification

These shoulder screws come with a traceable lot number and material test report. Similar in strength to Grade 8 steel.

Alloy Steel Thread-Locking Shoulder Screws

A locking element on the threads adds friction to resist loosening. Comparable to Grade 8 steel, these alloy steel shoulder screws are the strongest we offer.

Socket Head Screw Assortments