Value Collection HCI40870225N-005BX Hex Head Bolt 7/8-9

Product Description

The VALUE COLLECTION HCI40870225N-005BX is a fully threaded hex head bolt engineered for structural and heavy-duty fastening applications. It carries a 7/8-9 UNC thread size with a 2.25-inch length under head, manufactured from uncoated steel to the ASTM A490 standard. Grade A490 designates a high-strength structural bolt intended for use in steel-to-steel connections where load-bearing integrity is critical. The bright, uncoated finish means no additional coating has been applied, making it suitable for applications where coatings could interfere with fit or friction coefficients specified in connection design.

This bolt is used in commercial and industrial structural steel construction, including moment frames, shear connections, and heavy fabrication assemblies. It is typically installed by ironworkers, structural fabricators, and millwrights working under engineered connection specifications. Fully threaded construction along the shank allows consistent engagement across the full grip length, making it practical in shallow-depth connections and where thread engagement must begin close to the bearing surface.

Key Features

• ASTM A490 high-strength structural bolt standard for critical load-bearing connections
• 7/8-9 UNC thread form for broad compatibility with standard structural hardware
• Fully threaded shank provides maximum thread engagement across the full grip length
• Bright uncoated finish maintains dimensional accuracy without coating buildup
• Inch measurement system with length measured under the head

Compatibility

Designed as an ASTM A490-compliant hex head bolt for use with standard 7/8-9 UNC structural nuts and washers in engineered steel connections per applicable connection design specifications.

Installation Notes

Installation of ASTM A490 structural bolts should be performed by qualified ironworkers or structural fabricators following the Research Council on Structural Connections (RCSC) Specification for Structural Joints. Pretensioning method — turn-of-nut, direct tension indicator, or tension-control — must match the connection design requirement. Do not substitute A490 bolts with lower-grade hardware, and do not reuse A490 bolts once fully pretensioned. Verify nut and washer specifications comply with ASTM F3125 or the applicable connection standard before installation.