Value Collection HCI41000400N-005BX Hex Bolt 1-8 Unc 4in A490

Product Description

The VALUE COLLECTION HCI41000400N-005BX is a heavy-duty hex head bolt engineered for structural and industrial fastening applications. Built to ASTM A490 standards, this bolt is manufactured from high-strength steel with an uncoated, bright finish. It features a 1-8 UNC thread size with partial threading along a 4-inch length under head. Grade A490 designates a high-strength structural bolt commonly specified in steel construction and heavy mechanical assemblies. Installation is performed by millwrights, ironworkers, structural steel erectors, and industrial maintenance technicians who require certified high-strength fasteners.

This bolt is suited for structural steel connections, heavy equipment fabrication, and industrial construction where ASTM A490 compliance is required. The UNC (Unified National Coarse) thread pattern provides reliable engagement in standard tapped holes and nuts. Partial threading allows the unthreaded shank to bear shear loads in friction-type and bearing-type connections. Typical applications include steel-to-steel bolted connections in commercial and industrial building structures, bridges, and heavy machinery frames.

Key Features

• ASTM A490 certified high-strength structural bolt
• 1-8 UNC thread size with partial threading for shear-load applications
• 4-inch length under head for use in thicker connection stacks
• Uncoated bright finish — no coating to affect dimensional tolerances
• High-strength steel construction meeting Grade A490 material requirements
• Inch system of measurement; compatible with standard UNC nuts and washers

Compatibility

Designed as an ASTM A490-compliant replacement or new-installation hex head bolt for structural steel assemblies requiring 1-8 UNC partially threaded fasteners with a 4-inch length under head.

Installation Notes

ASTM A490 structural bolts must be installed by qualified ironworkers or structural steel erectors in accordance with AISC and RCSC specification requirements for high-strength bolted connections. Always power down or de-energize any associated equipment before working in proximity to live systems. Proper installation requires calibrated torque wrenches or tension-indicating hardware to achieve the specified minimum bolt pretension — do not estimate by feel. Follow the applicable structural drawings and connection specifications for bolt pattern, washer requirements, and inspection protocol.