Paulin® Paulin® Papco® B077-900 Partial Threaded Hex Head Cap Screw, 1-1/4 in, 8 in L Under Head, 8 Grade, Medium Carbon Steel, Bare Metal
Paulin® Paulin® Papco® B077-900 Partial Threaded Hex Head Cap Screw, 1-1/4 in, 8 in L Under Head, 8 Grade, Medium Carbon Steel, Bare Metal
SKU: CSB077-900
Manufacturer Part Number: B077-900
UPC: 771878368829
Brand: Paulin®
Description
Specifications
| Diameter - Thread Size | 1-1/4 in |
| Finish | Bare Metal |
| Grade | 8 |
| Hardness | C33 to C39 Rockwell |
| Head Size | 1-7/8 in W x 15/32 in H |
| Head Type | Hex |
| Length Under Head | 8 in |
| Material | Medium Carbon Steel |
| Material Specification | ASME B18.2.1-1996, SAE J429 |
| Measurement System | Imperial |
| Minimum Thread Length | 3 in |
| Series | B077 |
| 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