Metallics RSB102 1/4-20 x 1-1/4 in. Round Head Combo Stove Bolt Screws with Hex Nut - Steel Zinc - Each

A hex machine screw nut is included with each 1/4-20 x 1-1/4 in. RSB102 bolt. It's a hex machine screw nut, sized specifically for machine screw threads, so you don't need to source a separate nut to land strut, box covers, or sheet metal brackets.

Grip length is the 1-1/4 in. shank minus whatever the nut takes up, so it suits stacked thicknesses up to roughly an inch of sheet metal, strut, or box and cover combinations. Threads are 20 per inch, right hand, the standard 1/4-20 coarse pitch, so it mates with any 1/4-20 nut or tapped hole.

Yes, it's built to ANSI B18.6.3, the dimensional standard for slotted and recessed head machine screws, with a right hand 1/4-20 thread at 20 TPI. Head and drive dimensions fall within that standard, so it mixes with other ANSI B18.6.3 1/4-20 hardware and threads into any standard 1/4-20 nut or tapped hole.

No. The RSB102 is not Buy American compliant and not ARRA compliant, with country of origin listed as multiple. If your spec carries a domestic content requirement, this part won't satisfy it and you'll need a domestically sourced fastener instead.

Either one. The RSB102 has a combination round head with both a slot and a Phillips recess, so a flat blade or a Phillips bit both drive it. Phillips driver size is #4. The slot runs 0.064 to 0.075 in. wide and 0.082 to 0.109 in. deep; the Phillips recess is 0.255 to 0.268 in. across and 0.147 in. deep. Handy on a service call when you only have one driver on the belt.

Zinc plated carbon steel handles indoor and protected damp locations fine, which is where most electrical, plumbing, heating and air conditioning work puts it. For sustained wet exposure, salt air, or direct weather, step up to stainless instead - zinc plating on steel will eventually bloom.

Minimum tensile strength is 60,000 psi with a hardness of Rockwell B70 to B100, made from AISI 1006 to 1022 carbon steel. That's standard machine screw material, suitable for general support and mounting work, not for structural or high-load connections where a graded bolt is specified.

They go out in jar quantity, 100 pieces to the jar, with a 100 piece order minimum. If you need a different size or a different count, Metallics offers other sizes and quantities by request.

A stove bolt is a machine screw sold with its nut, and the RSB102 pairs a 1/4-20 x 1-1/4 in. round head combo drive screw with a matching hex machine screw nut. A plain machine screw assumes you are threading into a tapped hole or sourcing nuts separately. Pick the stove bolt when you are going through unthreaded sheet metal, strut, or a box and need to capture a nut on the back side.