Paulin® Paulin® Papco® 077-581 Partial Threaded Hex Head Cap Screw, 1/2 in, 1-1/4 in L Under Head, 8 Grade, Medium Carbon Steel, Bare Metal
Description
Paulin® Papco® Hex Head Cap Screw, Partial Threaded, Series: 077, Measurement System: Imperial, 1/2 in Thread, 1-1/4 in Length Under Head, 8 Grade, Medium Carbon Steel, Bare Metal, UNC Thread, 3/4 in W x 5/16 in H Head, Hex Head, 150000 psi Tensile Strength, Material Specification: ASME B18.2.1-1996, SAE J429, 1-1/4 in Minimum Thread Length, C33 to C39 Rockwell Hardness
Specifications
Diameter - Thread Size | 1/2 in |
Finish | Bare Metal |
Grade | 8 |
Hardness | C33 to C39 Rockwell |
Head Size | 3/4 in W x 5/16 in H |
Head Type | Hex |
Length Under Head | 1-1/4 in |
Material | Medium Carbon Steel |
Material Specification | ASME B18.2.1-1996, SAE J429 |
Measurement System | Imperial |
Minimum Thread Length | 1-1/4 in |
Series | 077 |
Tensile Strength | 150000 psi |
Thread Type | UNC |
Type | Partial Threaded |
Features
- 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
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