Stainless Steel Machine Screws
What are stainless steel machine screws? Stainless steel machine screws are corrosion-resistant screws with uniform machine threads and a blunt end for use with a nut or in a tapped hole. Made from stainless, they resist rust in wet, humid, and outdoor assembly across electronics, machinery, panels, and metal work.
Stainless Steel Machine Screws
Phillips Pan Head
Corrosion-resistant stainless machine screws with a rounded pan head and Phillips drive, the general-purpose choice for tapped holes and nuts.
Phillips Flat Head
Machine screws with a countersunk flat head and Phillips drive that sit flush with the surface for a clean finish.
Phillips Truss Head
Machine screws with a wide, low-profile rounded head and Phillips drive that spread bearing load over a larger area, good for thin or slotted material.
Phillips Oval Head
Machine screws with a countersunk oval head and Phillips drive that sit nearly flush while leaving a slightly raised decorative dome.
Square Drive Pan Head
Machine screws with a rounded pan head and square drive that resists cam-out under higher torque.
-min.jpg?ts=1755666211 "Star Drive Pan Head")
Star Drive Pan Head
Machine screws with a pan head and Torx-compatible star drive that minimizes stripping and handles high torque.
-min.jpg?ts=1755909592 "Star Drive Flat Head")
Star Drive Flat Head
Countersunk flat-head machine screws with a star drive for cam-out resistance and a flush finish.
Star Drive Truss Head
Wide truss-head machine screws with a star drive that combines high bearing area with strong cam-out resistance.
Slotted Pan Head
Machine screws with a rounded pan head and single slot, driven with a flat blade for traditional or simple assemblies.
Slotted Flat Head
Corrosion-resistant stainless machine screws with a countersunk flat head and single slot for a flush, traditional finish.
Slotted Truss Head
Wide, low-profile truss-head machine screws with a single slot that spread load across thin material.
Slotted Binding Head
Machine screws with a thick, slightly domed head and undercut, often used to bind wire or leather and driven with a flat blade.
Matching head and drive to the job
Machine screws come in a wide range of heads and drives, and the right pick depends on the finish and the tool. Pan and truss heads sit above the surface with a broad bearing face, flat and oval heads countersink for a flush or decorative finish, and drives range from Phillips and slotted to square and star for better cam-out resistance. Match the thread exactly to your nut or tapped hole, and choose the grade for the environment, with 316 for coastal and marine work.
Why choose stainless steel machine screws
- Corrosion resistance: holds up in wet, humid, and outdoor use.
- Non-magnetic: 18-8 and 316 suit electronics and instruments.
- Head and drive range: pan, flat, oval, truss, and more.
- Grade options: 18-8, 304, and 316 for the right environment.
Common applications for stainless machine screws
- Electronics, panels, and enclosures
- Machinery and equipment with tapped holes
- Metal brackets and covers
- Marine and outdoor assemblies (use 316)
Pair these with matching stainless machine screw nuts and flat washers, and browse every head, drive, and finish on the main machine screws category.
Stainless Steel Machine Screws FAQ
What is the difference between a machine screw and a bolt?
Machine screws have uniform threads and a blunt end for a nut or tapped hole, and are generally smaller. Bolts are typically larger and often pair with a nut only.
Are stainless machine screws magnetic?
18-8 and 316 are effectively non-magnetic, which is useful in electronics and instrument work where magnetism matters.
How do I choose the thread size?
Match the machine screw thread exactly to the nut or tapped hole, in the correct coarse or fine pitch, so the parts engage fully.