M5 Shoulder Bolts | McMaster-Carr

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About Shoulder Screws

Metric Alloy Steel Shoulder Screws

Comparable to Class 12.9 steel.

Short-Thread Alloy Steel Shoulder Screws

Use these screws in thin materials; they have a shorter threaded portion than our standard shoulder screws. They’re comparable in strength to Grade 8 steel.

Metric 18-8 Stainless Steel Shoulder Screws

These screws have metric thread sizes. They are 18-8 stainless steel for good chemical resistance.

Same-Size Thread 18-8
Stainless Steel Shoulder Screws

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 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 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 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.

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.

Metric 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.