6-32 Shoulder Bolts | McMaster-Carr

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About Shoulder Screws

Alloy Steel Shoulder Screws

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

18-8 Stainless Steel Shoulder Screws

Made from 18-8 stainless steel, these inch-sized shoulder screws have good chemical resistance.

316 Stainless Steel Shoulder Screws

More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water. These screws have inch thread sizes.

High-Strength 17-4 PH Stainless
Steel Shoulder Screws

Shoulder screws made of 17-4 PH stainless steel are nearly twice as strong as 18-8 stainless steel and have the same corrosion resistance. These screws have inch thread sizes.

18-8 Stainless Steel
Thread-Locking Shoulder Screws

These shoulder screws have good chemical resistance.

Super-Corrosion-Resistant 316 Stainless
Steel Thread-Locking Shoulder Screws

More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water.

Internally Threaded Shoulders

Screw these shoulders onto a stud.

Left-Hand Threaded Shoulder Screws

Tighten these shoulder screws by turning them to the left; once fastened, they resist loosening from counterclockwise motion.

Precision Shoulder Screws

18-8 Stainless Steel Precision Shoulder Screws

Slotted 18-8 Stainless Steel
Precision Shoulder Screws

316 Stainless Steel Precision Shoulder Screws

More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water.

High-Strength 416 Stainless
Steel Precision Shoulder Screws

Made of 416 stainless steel, these shoulder screws are almost twice as strong as 18-8 stainless steel and have the same corrosion resistance.

Alloy Steel Precision Shoulder Screws

Comparable to Grade 8 steel, these screws are the strongest precision shoulder screws we offer.

Brass Precision Shoulder Screws

Brass shoulder screws are electrically conductive, nonmagnetic, and have good corrosion resistance.

Low-Profile Precision Shoulder Screws

Slotted Low-Profile Precision Shoulder Screws

Ultra-Low-Profile Precision Shoulder Screws

These screws have a head height about one-third the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.