What Our Square Head Set Screws Do
Our square head set screws are low-profile fasteners that tighten from the outside with a wrench, making them ideal when access is limited or when a slotted or hex socket isn’t practical. The square head transmits torque efficiently, seats cleanly, and resists cam-out, so you get consistent clamping force on shafts, collars, pulleys, jigs, and tooling plates.
Use our square head set screws wherever repeatable, wrench-tightened clamping is preferred: locking collars to shafts, securing gears and pulleys, setting stop positions on linear guides, or dialing in fixtures and jigs that need quick, confident adjustments. The square head gives you leverage in tight quarters, while the compact body keeps assemblies clean and unobtrusive.
If your application calls for a different point style or head configuration, consider pairing with our Slotted Set Screw Cone Point for positive bite on hardened shafts, or our Slotted Set Screw Flat Point when you want secure holding without marring the surface.
Engineered in accordance with DIN 479, our screws feature a true square head designed for strong wrench engagement and predictable torque. The form factor makes setup straightforward on production lines, in maintenance bays, and across custom fixtures, giving you the secure hold you expect with fewer do-overs and less downtime.
Practical and Durable Material Options
We offer a practical size range to match common industrial fits along with material options to suit your environment. Choose durable alloy steel for maximum strength in dry, controlled conditions or stainless steel for corrosion resistance in wash-down, outdoor, or high-humidity areas. Available finishes and heat treatments are selected to balance hardness, grip, and service life, so your fasteners stay tight and your schedules stay on track.
Fit and Installation Notes
Select thread size and length to suit the thread engagement you need, then match material to the operating environment. Tighten with a properly sized open-end or adjustable wrench and, where specified, apply a suitable threadlocker or anti-seize to meet your maintenance strategy. With the right torque and contact surface, our screws deliver a stable holding force that stands up to vibration, start-stop loads, and day-to-day service.
FAQs
What is a square head set screw?
A square head set screw is a low-profile fastener tightened with a wrench on its square head to secure parts against a shaft or within a fixture. Unlike socket types, it doesn’t require an internal drive, which makes it easy to service when access is limited.
When to use square head set screws?
Choose square head set screws when you want strong wrench engagement, quick adjustments, and reliable clamping without needing an internal hex or slot. They’re a smart pick for jigs, collars, pulleys, and stops that see frequent setup changes.
Are square head set screws still common?
Yes, they remain a staple in industrial maintenance and tooling because the square head delivers excellent torque transfer and resists cam-out. Many shops prefer them for their serviceability and long-term reliability.
What is the difference between a set screw and a regular screw?
A set screw is primarily used to lock one component to another, often pressing its point against a shaft, while a regular screw typically fastens two parts together through clamping. Set screws focus on holding position and resisting movement rather than drawing two surfaces tightly together.
