Metallics JRM23SLT 8-32 x 4 in. Round Head Slotted Machine Screws - Steel Zinc - Each

The JRM23SLT is an 8-32 thread, 32 threads per inch, which is the thread used on receptacle and switch mounting holes and on most device plates. At 4 inches long it is far longer than a standard plate screw, so it is meant for deep-set boxes, thick wall build-ups, or mounting a device out through furring and finish material. For a flush plate on a standard box you want a much shorter 8-32 screw.

Tensile strength is 60,000 psi minimum with a hardness of Rockwell B70 to B100, made from low carbon steel in the AISI 1006 to 1022 range. That is standard low carbon machine screw strength, fine for mounting devices, plates, boxes and light brackets. It is not a structural or high strength fastener, so for load bearing connections step up to a grade marked bolt.

These are carbon steel with a zinc finish. Zinc plating handles indoor and dry conditions well, but it is a sacrificial coating and will eventually rust in wet, coastal, or chemically exposed locations. For outdoor or wash down work, specify stainless machine screws instead of the zinc plated steel.

The JRM23SLT is flagged compliant for both ARRA and Buy American in the product data, while country of origin is listed as China. On a federally funded job, hand both facts to your specifier, since the compliance route differs by project and funding source.

No. The JRM23SLT has a slotted drive only, a single straight slot with no cross recess. A Phillips or square bit will not engage. If your crew is running impact drivers, a slotted head is the wrong choice and you want a combo or Phillips head 8-32 screw instead.

They ship in a jar, with an order minimum of 100 count. Total packed weight is 2.01 lbs. If you need a different count or a different length in the same 8-32 round head slotted pattern, Metallics states other sizes and quantities are available by request.