Manufactured to ASME B18.2.2 dimensions / DFAR Compliant
Medium Carbon Steel or Alloy Steel
Proof Load: 180,000 psi
Hardness: HRC 32-38 (1/4" thru 5/8" Diameters)
Hardness: HRC 35-40 (3/4" thru 7/8" Diameters)
Coarse Thread / EcoGuard 1,000 hour Gray/ Silver Coating
Free Manufacturers Certification Available.