Metallics JRM107SLT 6-32 x 3-1/2 in. Round Head Slotted Machine Screws - Steel Zinc - Each

Slotted drive only, so a flat blade is required, not a Phillips. The slot runs 0.039 to 0.048 inch wide and 0.051 to 0.068 inch deep, which suits a standard narrow electrician's flat tip (the same blade on a 6-32 device screw). Round head with a head height of 0.091 to 0.103 inch and a head width of 0.24 to 0.26 inch.

The JRM107SLT has a round head, which seats on top of the surface and does not sit flush. The domed head stands about 0.091 to 0.103 inch above the material with a 0.24 to 0.26 inch head diameter, so it bears on a flat, uncountersunk hole. If the hole is countersunk or the head has to finish level with the surface, order a flat head 6-32 screw instead.

Zinc finish over steel is a mild corrosion coating meant for dry, indoor use. The JRM107SLT is steel with a zinc plating, made to AISI 1006 to 1022 steel, so in a wet location, exterior wall, pool room or coastal install it will eventually rust at the head and in the threads. For those spots, specify a stainless 6-32 machine screw instead.

The JRM107SLT carries both ARRA Compliant and Buy American Compliant flags in its product data, with country of origin China. If your contract runs on a strict domestic melt and manufacture clause rather than the ARRA style compliance designation, confirm the origin against your spec before you submit.

No. A machine screw like the JRM107SLT has a uniform, straight machine thread (6-32, 32 threads per inch) with a blunt end, so it needs a tapped hole or a nut. Sheet metal and wood screws are tapered and self threading into untapped material. If you are driving into bare wood or thin steel with no tapped hole, this is the wrong fastener.

They ship in a jar, with an order minimum of 100 count. Total weight on the pack is listed at 1.19 lbs. That is the practical buy quantity for a service van or MRO crib rather than a handful of loose screws.

Rated at 60,000 psi minimum tensile with a hardness of Rockwell B70 to B100, from AISI 1006 to 1022 low carbon steel. That is standard low carbon machine screw strength, fine for mounting devices, covers, plates and light brackets. It is not a structural or high strength fastener, so for a load bearing or high torque joint step up to a socket cap or grade bolt.