HEXCAP 5/8X9 NC GR8

Paulin Papco Hex Head Cap Screw, Partial Threaded, Series: B077, Measurement System: Imperial, 5/8 in Thread, 9 in Length Under Head, 8 Grade, Medium Carbon Steel, Bare Metal, UNC Thread, 15/16 in W x 25/64 in H Head, Hex Head, 150000 psi Tensile Strength, Material Specification: ASME B18.2.1-1996, SAE J429, 1-3/4 in Minimum Thread Length, C33 to C39 Rockwell Hardness

• Papco grade 8 cap screws, identified by the six radial bar head marking, are made of medium carbon alloy steel, quenched and tempered for stronger, safer, more reliable mechanical joints
• Six radial bars
• Double heat treated
• Use with grade 8 nuts to develop the full strength of the cap screw
• Medium carbon steel quenched and tempered C: 0.25 to 0.55, P: 0.025 maximum, S: 0.025 maximum
• For studs only, sulfur content may be 0.13% maximum
• There shall be a sufficient hardenability to ensure a microstructure consisting of approximately 90% martensite in the core of threaded sections of the fasteners after hardening and quenching and before tempering