Value Collection SMBI20500025 Square Head Bolt 1/2-13 Unc

Product Description

The VALUE COLLECTION SMBI20500025 is a Grade 2 steel square head bolt with a 1/2-13 UNC thread size and 14-inch length under head. Square head bolts provide a larger bearing surface for wrench engagement, making them well suited for structural connections, timber framing, and heavy equipment assembly where high torque application or frequent adjustment is expected. This bolt conforms to ANSI/ASME B18.2.1 dimensional standards, ensuring consistent thread form and head geometry for reliable fitment in standard hardware applications. The coarse UNC thread pattern offers good resistance to cross-threading and works efficiently in lower-strength or softer base materials.

This bolt is used in general industrial, construction, and maintenance applications where a square head profile is specified. Common installation scenarios include wood-to-steel connections, agricultural equipment, conveyor frames, and utility structures. Plumbers, pipefitters, ironworkers, millwrights, and general contractors regularly stock square head bolts for repair and new-construction work. The 1/2-13 UNC thread mates with standard 1/2-13 hex nuts, square nuts, or tapped holes meeting the same thread standard.

Key Features

• 1/2-13 UNC coarse thread for broad compatibility with standard nuts and tapped holes
• 14-inch length under head accommodates thick structural members and stacked assemblies
• Grade 2 steel construction provides adequate tensile strength for general-purpose fastening
• Square head geometry allows pipe wrench or adjustable wrench engagement where socket access is limited
• Conforms to ANSI/ASME B18.2.1 for consistent dimensional tolerances

Compatibility

Designed as an OEM-style replacement or standard stock fastener for applications requiring 1/2-13 UNC square head bolts in Grade 2 steel per ANSI/ASME B18.2.1.

Installation Notes

Installation is typically performed by ironworkers, carpenters, millwrights, or maintenance mechanics using a pipe wrench, adjustable wrench, or square-socket driver. Ensure mating threads and tapped holes are clean and free of debris before installation. Follow applicable structural or equipment manufacturer torque guidelines for Grade 2 fasteners, and verify that the base material and joint design are rated for the load requirements of the application. Do not use impact drivers without confirming the fastener and joint can tolerate the applied torque.