Metallics JCB2SS Bolts 1/4-20 X 1 Carriage Blt SS (Jar 100)

Yes. The JCB2SS is 18-8 stainless steel to ASTM F593, which handles outdoor exposure, condensation, and washdown areas without rusting the way a plated carbon steel bolt would. For salt spray or pool chemical environments, 316 stainless is the better pick.

No. The JCB2SS is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your government, school, or transit job carries a domestic sourcing clause, this bolt will not satisfy it and you'll need a domestically produced carriage bolt instead.

The head is a mushroom profile standing only 0.125 to 0.145 inch tall and 0.563 to 0.594 inch wide, with no driver recess. That means a smooth, nearly flush bearing surface on the finished side, which is what you want running cable tray, strut, or enclosure hardware where a protruding hex head would chafe conductors or snag. You tighten from the nut side only. It's catalogued for electrical, plumbing, heating, and air conditioning work.

It ships as a jar of 100 pieces, and the jar is the minimum order unit. Jar weight is about 953 g. If you need a different count or a different length in the same CB/JCB carriage bolt series, other sizes and quantities are available by request.

Use a carriage bolt like the JCB2SS when only one side is accessible for wrenching and you want a smooth head on the show side: the square neck under the 0.563 to 0.594 inch mushroom head locks into the material so you turn the nut alone. Use a hex head bolt instead when you need to hold the head with a wrench, want a higher-strength grade, or are threading into a tapped hole rather than clamping a through hole.