ZINC SET SCREW 8.8 GRADE

A Zinc Set Screw (Grade/Class 8.8) is a high-tensile, fully threaded structural fastener designed to deliver strong clamping forces in heavy-duty machinery, engineering, and automotive applications. The term "set screw" in British and Australian standards specifically denotes a fully threaded hex bolt, differentiating it from a partially threaded standard bolt. Technical Specifications Tensile Strength: High tensile with a minimum ultimate tensile strength of 800 MPa (or N/mm²). Yield Strength: Minimum of 640 MPa (derived from the "8.8" specification where 8 × 100 = 800 MPa ultimate strength and 800 × 0.8 = 640 MPa yield point). Hardness: Typically ranges between 22 HRC to 34 HRC. SAE Equivalent: Performance properties match SAE Grade 5 standards. Standards: Commonly manufactured to comply with AS/NZS 1110.2, ISO 4017, or DIN 933 structural codes. Finish: Bright Zinc Plating (BZP) provides a clean cosmetic appearance and moderate resistance to indoor moisture. It is unsuited for wet, outdoor, or marine settings unless upgraded to hot-dip galvanised coating.