Metallics SBH951 Bolts 3/4-10 x 2-1/2 HXBT SS (Box 25)

The SBH951 is a 3/4-10 hex bolt, meaning a 3/4 inch nominal diameter with 10 threads per inch, which is standard UNC coarse thread. Measured shank outside diameter runs 0.7410 to 0.7500 inch. Any 3/4-10 UNC nut will thread onto it; nuts and washers are not included in the box.

The SBH951 is 316 stainless steel. The molybdenum in 316 gives it greater corrosion resistance than 18-8 and better strength at elevated temperatures, which is why it gets specified for coastal, wastewater, and chemical exposure where 18-8 would pit.

No, not as a strength substitution. The SBH951 runs 85,000 to 140,000 psi minimum tensile and 45,000 psi minimum yield, with hardness Rockwell B80 to C32. Grade 5 carbon steel is considerably higher in yield, so if the connection was engineered around Grade 5, swapping in 316 stainless changes the capacity. Use 316 where corrosion is the governing problem, not where the joint is strength-critical.

No. The SBH951 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. For federally funded work carrying domestic sourcing requirements, you need a domestically produced fastener instead.

Across-flats head width is 1.100 to 1.125 inch, so a 1-1/8 inch wrench or socket fits. Head height is 15/32 inch, and the wrenching height (the usable grip depth on the flats) is 0.324 inch, worth checking if you are working in a counterbored or recessed pocket.

They ship as a box of 25. The stated order minimum is 50 each, so plan on two boxes as the smallest buy. Other sizes and quantities are available by request.

It is sold into the electrical, plumbing, heating and air conditioning trades, and that is where a 3/4-10 stainless hex bolt usually lands: anchoring strut and trapeze hangers, bolting equipment pads and pump bases, flange and bracket connections in wet or corrosive rooms, and rooftop or exterior mounting where plated carbon steel would rust out.

316 stainless is a dissimilar metal to zinc-coated carbon steel, so in a wet or salt-air location the galvanizing will sacrifice around the bolt over time. It is common practice to use stainless hardware on galvanized strut indoors and in dry runs, and to isolate or go all-stainless where the connection stays wet. The bolt material here is 316, so the decision is about the mating parts, not the fastener.