Industrial screws
BISI Fasteners supplies set screws, machine screws, assembly screws, square head set screws and shoulder screws for manufacturers and maintenance crews in Panama City and across North Florida. Tell us the size, thread and material, and we'll find it.
Last reviewed October 15, 2026
Screws we supply
- Set screws
- Headless screws that tighten against a shaft to lock a collar, pulley or gear in place. Cup, flat, cone and dog point styles.
- Machine screws
- Uniform-thread screws that go into tapped holes or nuts, used in machinery, electrical equipment and assemblies.
- Assembly screws
- Screws for production assembly, including socket head cap screws and other industrial styles.
- Square head set screws
- Set screws with a square head that turns with a wrench, for high holding torque on collars and older machinery.
- Shoulder screws
- A precision unthreaded shoulder that acts as a pivot, axle or guide for moving parts, with a threaded end to hold it in place.
Materials, grades and standards
We stock low-carbon steel, alloy steel, stainless steel, bronze and aluminum, including anodized finishes, in grade 5, grade 8, grade 9 and B7 and more. Everything we supply meets the specifications and standards of ASTM, ASME, SAE and ANSI.
Need a quantity packaged a certain way, or delivered on a schedule? See inventory management and custom packaging.
Common questions
When should I use a square head set screw instead of a socket set screw?
Square head set screws are turned with a wrench, so they can be tightened harder and are easy to see and remove. They're common on collars and older equipment. Socket (headless) set screws sit flush or below the surface, which is better around moving parts.
What is a shoulder screw used for?
A shoulder screw has a smooth, precision-ground shoulder between the head and the thread. Parts can pivot or slide on the shoulder, so it's used for linkages, rollers, guides and pivot points.
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