Metallics JSRM97 1/4-20 x 2-1/2 in. Round Head Slotted Machine Screws - 18-8 Stainless - Each

The JSRM97 is a 1/4-20 machine screw, 2-1/2 inches long, with 20 threads per inch. That is the coarse UNC pitch for 1/4 inch fasteners, so it mates with standard 1/4-20 nuts, threaded strut inserts, and 1/4-20 tapped holes.

The JSRM97 is made from 18-8 stainless, the common austenitic grade used where plain or zinc-plated steel would rust, so it suits damp interiors, mechanical rooms, and general exterior use. Hardness runs Rockwell B85 to B95 and minimum tensile strength is 80,000 psi. Note that tensile figures for stainless machine screws are approximations; there is no single performance standard for them.

No. The JSRM97 is listed as not Buy American compliant and not ARRA compliant, with country of origin recorded as multiple. If your project carries a domestic sourcing requirement, these will not satisfy it.

These ship in a jar of 100 with a 100 piece order minimum, so the smallest purchase is one full jar rather than a loose screw. Metallics also offers other sizes and quantities in this round head slotted line by request.

Round head screws like the JSRM97 sit on top of the surface with a domed profile, so they are for through-bolting panels, straps, brackets, and box covers where you do not want to countersink. If the head has to finish flush with the material, you need a flat head countersunk screw instead. A truss or pan head is the alternative when you want a lower profile with a wider bearing face.

Yes. Metallics lists the field application as the electrical, plumbing, heating and air conditioning industries, which is where a 1/4-20 stainless round head slotted screw typically lands: box and enclosure mounting, strap and clamp hardware, and equipment panels. A machine screw needs a tapped hole or a nut; it will not cut its own thread.

Dimensions on the Metallics SRM series round head slotted machine screws are held to SAE material standard, with head, slot, and recess gaging tolerances published per size (recess penetration gaging depth 0.104 to 0.130 on this one). That matters if you are matching existing hardware on a panel and need the head profile to look the same.

A jar comes in at 2.83 lbs, with the package measuring 3.5 x 5.75 x 3.5 inches. Useful if you are staging multiple jars on a truck or working to a shipping weight on a submittal.