McMaster-Carr

With inch-sized threads the same diameter as the shoulder, these screws can handle heavy loads. They’re 18-8 stainless steel for good chemical resistance.

Metric 316 Stainless
Steel Shoulder Screws

For metric thread sizes with excellent resistance to chemicals and salt water, choose these 316 stainless steel shoulder screws.

Metric Low-Profile Shoulder Screws

These metric screws have a head height that's about two-thirds the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.

Metric Slotted Low-Profile
Steel Shoulder Screws

With a reduced head size and an unthreaded shoulder, use these screws as a shaft or dowel pin for small rotating parts in low-clearance applications.

Metric Alloy Steel
Thread-Locking Shoulder Screws

Available in metric sizes, these screws have a locking element on the threads that adds friction to resist loosening. Comparable to Grade 8 steel, they are the strongest screws we offer.

Metric Steel Hex Head
Shoulder Screws

Also known as wheel and axle bolts, these metric screws have an unthreaded shoulder that acts as a shaft, so material attached to the threaded end can rotate.

Precision Shoulder Screws

Metric 18-8 Stainless Steel
Precision Shoulder Screws

Metric Slotted 18-8 Stainless
Steel Precision Shoulder Screws

With a shoulder that’s twice as precise as standard shoulder screws, these metric shoulder screws act as a shaft or axle for bearings and other moving parts in applications that require smooth and accurate movement, such as measuring and lab equipment. Made of 18-8 stainless steel, they’re nearly as strong as steel but won’t rust in outdoor or washdown environments.

Metric Thumb-Grip 18-8 Stainless
Steel Precision Shoulder Screws

Install and remove these metric shoulder screws by hand or with a hex key.

Metric 316 Stainless Steel
Precision Shoulder Screws

These metric 316 stainless steel shoulder screws are more corrosion resistant than 18-8 stainless steel shoulder screws. They also have excellent resistance to chemicals and salt water.

Headless Alloy Steel
Precision Shoulder Screws

Without a head to get in the way, these screws fit in tight spaces where standard shoulder screws cannot. Either thread them in a countersunk hole for a flush mount, or install them with the shoulder sticking out to use them as pins or dowels for aligning and locating components.

Metric Brass Precision
Shoulder Screws

Offered in metric sizes, these brass shoulder screws are electrically conductive, nonmagnetic, and have good corrosion resistance.

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.

Metric Low-Profile
Precision Shoulder Screws

Metric Thread-Locking
Precision Shoulder Screws

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About Shoulder Screws

General Purpose Shoulder Screws

Metric Alloy Steel Shoulder Screws

Metric Same-Size ThreadAlloy Steel Shoulder Screws

Metric 18-8 StainlessSteel Shoulder Screws

Same-Size Thread 18-8Stainless Steel Shoulder Screws

Metric 316 StainlessSteel Shoulder Screws

Metric Low-Profile Shoulder Screws

Metric Slotted Low-ProfileSteel Shoulder Screws

Metric Alloy SteelThread-Locking Shoulder Screws

Metric Steel Hex HeadShoulder Screws

Precision Shoulder Screws

Metric 18-8 Stainless SteelPrecision Shoulder Screws

Metric Slotted 18-8 StainlessSteel Precision Shoulder Screws

Metric Thumb-Grip 18-8 StainlessSteel Precision Shoulder Screws

Metric 316 Stainless SteelPrecision Shoulder Screws

Headless Alloy SteelPrecision Shoulder Screws

Metric Brass PrecisionShoulder Screws

Ultra-Low-Profile PrecisionShoulder Screws

Metric Low-ProfilePrecision Shoulder Screws

Metric Thread-LockingPrecision Shoulder Screws

Metric Same-Size Thread
Alloy Steel Shoulder Screws

Metric 18-8 Stainless
Steel Shoulder Screws

Same-Size Thread 18-8
Stainless Steel Shoulder Screws