Metallics RSB86 8-32 x 1 in. Round Head Combo Stove Bolt Screws with Hex Nut - Steel Zinc - Each

Each 8-32 x 1 inch RSB86 stove bolt ships with a hex machine screw nut, so you don't need to source nuts separately. The hex machine screw nut is made specifically for machine screw threads rather than for coarse bolt threads, so it mates with the 32 threads-per-inch, right-hand 8-32 thread on the bolt.

Dimensions on the RSB86 are held to ANSI B18.6.3, the standard for slotted and recessed head machine screws, and the steel is AISI 1006 to 1022. Tensile strength is 60,000 psi minimum and hardness runs Rockwell B70 to B100. Note that it is not Buy American compliant and not ARRA compliant, with country of origin listed as multiple, so it will not satisfy a domestic-sourcing clause.

The head takes either a slotted or a Phillips driver, and the called-out Phillips size is a #2. The slot runs 0.045 to 0.054 inch wide and 0.058 to 0.077 inch deep, so a standard medium flat blade seats fine. A #2 Phillips bit in a driver works, and the Phillips recess is 0.165 to 0.178 inch across with a 0.101 inch depth, so a worn or oversized bit will cam out.

At 1 inch of length under the round head, the RSB86 gives you usable grip through sheet steel stack-ups typical of electrical, plumbing, and HVAC work, which is the field application Metallics lists for the RSB series. Round head profile sits about 0.107 to 0.12 inch tall with a 0.287 to 0.309 inch head diameter, so it bears on a standard #8 hole without pulling through, and the excess shank past the nut can be left or cut.

The RSB86 is sold in a 100-piece quantity, with a jar as the order-minimum unit of measure and a clamshell pack type on record. Metallics notes that other sizes and quantities are available by request, so if you need a different length or count in the RSB stove bolt line it can be asked for.

Zinc plated steel is what the RSB86 is built from, which is a general-purpose indoor and protected-location finish. It handles damp mechanical rooms and utility spaces, but zinc plating is a sacrificial coating, not stainless, so for direct weather exposure, wash-down, or coastal work you want a stainless or hot-dip galvanized machine screw instead.

Steel machine screws from No. 6 through 1/2 inch diameter are subject to tensile testing when their length is at least 1/2 inch or 3D, whichever applies. At #8 diameter and 1 inch long, the RSB86 falls in the tested range and is rated at 60,000 psi minimum tensile.