Chenango Supply 5/16-18 x 1-1/4 Inch Grade 8 Hex Head Bolts – Alloy Steel, Yellow Chromate Zinc, USS Coarse Thread, High-Strength Hex Head Cap Screws, 50 Pieces (5/16-18x1-1/4 (50pcs))

High-strength Grade 8 hex head cap screws engineered for fastening applications where hardened performance, load capacity, and dependable thread engagement are required. Specifications Bolt size: 5/16-18 x 1-1/4 inch Thread type: USS coarse thread Head style: Hex head cap screw Grade: Grade 8 Material: Quenched and tempered alloy steel Minimum tensile strength: 150,000 PSI Finish: Yellow chromate zinc coating Quantity: 50 pieces Performance & Application Explanation These 5/16-18 Grade 8 hex head bolts are designed for applications requiring high tensile strength and secure joint integrity. The quenched and tempered alloy steel construction provides hardened performance suitable for heavy machinery and automotive environments, while the USS coarse thread ensures dependable engagement and consistent installation. The hex head design supports standard tooling for controlled torque application, and the yellow chromate zinc coating adds corrosion resistance while allowing fast visual identification of Grade 8 hardware during assembly and inspection. B2B Use Cases Commonly used in heavy machinery assembly, automotive repair, equipment fabrication, agricultural equipment, and industrial maintenance applications where high-strength Grade 8 bolts are required. Quality & Trust Reassurance Manufactured for consistent threading, hardened strength, and reliable performance under load. Designed to meet the expectations of professional mechanics, fabricators, and maintenance teams operating in high-stress fastening environments.

• GRADE 8 ALLOY STEEL CONSTRUCTION – Manufactured from quenched and tempered alloy steel to deliver hardened strength for demanding mechanical, automotive, and industrial fastening applications.
• ENGINEERED HIGH-STRENGTH PERFORMANCE – Rated with a minimum tensile strength of 150,000 PSI, supporting secure clamping and load retention in high-stress assemblies.
• STANDARD 5/16-18 USS COARSE THREAD – Designed with 5/16-18 USS coarse threads for reliable engagement with matching nuts and threaded components commonly used in heavy-duty equipment.
• HEX HEAD CAP SCREW DESIGN – Hex head profile allows installation with standard wrenches or sockets, supporting controlled torque application during assembly and maintenance.
• YELLOW CHROMATE ZINC COATING WITH BULK PACK – Yellow chromate zinc finish supports corrosion resistance and quick Grade 8 identification; 50-piece pack supports shop inventory, repairs, and ongoing maintenance needs.