Metallics RSB16 10-32 x 1/2 in. Round Head Combo Stove Bolt Screws with Hex Nut - Steel Zinc - Each

Nuts are included. Each Metallics RSB16 10-32 x 1/2 in. round head stove bolt ships with a hex machine screw nut, which is the nut style cut specifically for machine screw threads rather than coarse bolt threads. Nothing else is needed to make up the joint.

10-32 is the machine screw thread used throughout electrical box, device, and cover mounting, and the RSB16 is a 10-32 right hand thread at 32 threads per inch in a 1/2 in. length. It is listed for electrical, plumbing, heating, and air conditioning work. The 1/2 in. length suits bolting through sheet metal and strap thicknesses; for stacking through thicker assemblies you need a longer bolt.

No. The RSB16 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your job carries domestic sourcing requirements, these will not satisfy them and you need a documented domestic fastener instead.

Either works. The head is a combination recess, slotted and Phillips in one head, so you can run it with a #2 Phillips bit or a flat blade screwdriver. The slot is 0.05 to 0.06 in. wide and 0.065 to 0.087 in. deep, and the Phillips recess measures 0.182 to 0.195 in. across at 0.119 in. deep. Handy on service work when you only have one of the two drivers in the pouch.

The round head sits 0.123 to 0.137 in. tall and spans 0.334 to 0.359 in. across. That domed profile sits proud of the surface rather than flush, so if your plate or bracket is countersunk for a flat head these are the wrong screw. Head geometry follows ANSI B18.6.3.

They sell in 100 piece quantity, packaged in a jar. Pack type is clamshell packaging. Other sizes and quantities can be had by request if you are standardizing a truck stock or a facility bin.

Tensile strength is 60,000 psi minimum with a hardness of Rockwell B70 to B100. One thing to know on the 1/2 in. length: steel machine screws from No. 6 through 1/2 in. diameter that are shorter than either 1/2 in. or 3D (three times the nominal diameter) are not subject to tensile testing. A 10-32 at 1/2 in. long falls under the 3D threshold, so the 60,000 psi figure is the material requirement rather than a tested value on this size.

The RSB16 is steel with a zinc finish, made from AISI 1006 to 1022 steel. Zinc plating handles indoor and protected locations well; in wet, exterior, or corrosive environments the plating is a sacrificial coating and will eventually give way, so stainless is the better call for sustained exposure.