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Set Screws

4114 Products

These screws are used to secure one object against another, typically to prevent relative motion, such as holding a shaft in place inside a pulley, gear, or other mechanical assembly.

Nonmarring Set Screws

Nonmarring set screws are headless fasteners typically used to hold a component, such as a shaft collar, pulley, or knob, in place on a shaft or other surface without leaving marks, dents, or scratches on the material being fastened.

Extended-Tip Set Screws

This extended tip is typically designed to engage with a mating part, such as a hole, groove, or detent, to provide additional holding power, alignment, or positional accuracy.

High-Hold Cone-Point Set Screws

The cone-shaped tip tapers to a point, allowing it to penetrate and engage the mating part. This design creates a tight, secure fit that prevents axial and rotational movement of the fastened components.

Easy-Adjust Ball-Point Set Screws

Easy-adjust ball-point set screws are fasteners that incorporate a rounded ball tip at the end of the screw, allowing for easy adjustment and repositioning without damaging the mating surface.

Hollow-Lock Set Screws

The hollow tip allows the screw to lock parts in place without digging into the surface, making it ideal for applications where surface integrity is important.

Swivel-Tip Set Screwsfor Angled Surfaces

The swivel action of the tip ensures that it automatically adjusts to the correct angle, improving holding power and reducing the need for precise alignment during installation.

LILY Bearing stocks 4,114 set screws in seven tip styles — cup-point, cone-point, flat-tip (nonmarring), extended-tip, ball-point, hollow-lock, and swivel-tip — across steel, stainless steel, brass, nickel alloy, and plastic. As headless fasteners, set screws thread entirely into a hole and use the tip alone to hold a component — such as a collar, pulley, or knob — in place on a shaft. Use the filters below, or the comparison table, to narrow down by tip style, material, thread size, and length.

Compare by Tip Style

Tip Style	How It Holds	Best For	Watch Out For
Cup-Point	A concave, rimmed tip digs slightly into the shaft for a secure, non-slip grip	General-purpose holding of collars, pulleys, gears, and knobs on a shaft	Leaves a small mark on the shaft — not for finished or precision surfaces
Cone-Point	A pointed tip penetrates the shaft, often into a matching drilled dimple, for the highest holding power of any tip style	Permanent or semi-permanent positioning where maximum grip matters most	Penetrates the shaft surface — not for parts that need frequent repositioning
Flat-Tip (Nonmarring)	A flat face presses against the shaft by friction alone, without digging in	Finished shafts, coated surfaces, or components that must be repositioned without marring	Lower holding power than a cup or cone point — not for high-torque applications
Extended-Tip	A narrow cylindrical tip (a dog-point-style design) engages a matching hole, groove, or detent in the shaft	Precise axial and rotational positioning where the shaft has a matching feature	Requires a matching hole or groove in the shaft — won't work on a plain shaft
Ball-Point	A rounded ball tip contacts the shaft at a single point, allowing smooth sliding adjustment	Applications requiring frequent, easy repositioning without removing the screw	Lower holding power — not for parts under heavy load or vibration
Hollow-Lock	A hollow tip locks the part in place without digging into the mating surface	Applications where surface integrity must be preserved	Less common tip style — confirm fit and availability for your thread size
Swivel-Tip	The tip pivots to automatically align itself with the mating surface	Angled or non-perpendicular surfaces where a rigid tip wouldn't seat flush	A specialty design — confirm compatibility with your specific angle and application

Most tip styles are available in steel, 18-8 and 316 stainless steel, brass, nickel alloy, and (for flat-tip screws) plastic, with thread-locking versions available for added vibration resistance.

Need a Custom Set Screw?

Don't see the tip style, material, or length you need? Our team can cross-reference an existing part or quote a custom configuration. Request a Quote or Contact Us. LILY Bearing also offers customized fastener services.

Frequently Asked Questions

Which set screw tip has the strongest holding power?

Cone-point set screws generally provide the strongest holding power, since the pointed tip penetrates the shaft (often into a matching dimple) rather than just gripping the surface. Cup-point screws are a step below — a good balance of strong holding power for general use without requiring a matching hole in the shaft. Flat-tip and ball-point screws hold with friction only and are best reserved for finished surfaces or applications needing easy repositioning.

What does "nonmarring" mean for a set screw?

A nonmarring set screw has a flat tip that presses against the shaft by friction alone, without digging in or leaving a mark. It's the right choice for finished, coated, or precision shafts where a cup-point or cone-point screw's penetrating tip would cause visible damage.