CONTRACTOR SELECT — Carriage Bolts — Carriage Bolt, 5/16-18x2 1/4L, Pk100

Designed for professional use, this CONTRACTOR SELECT Carriage Bolts helps keep parts and tooling consistent across routine service tasks.

Quick specs

• Grade: 2
• Head Type: Round
• Carriage Bolt Type: Carriage Bolt
• Thread Size: 5/16"-18
• Manufacturer Part Number: U08305.031.0225
• UPC: -

Product information

• Manufacturer Part Number: U08305.031.0225
• UPC: -
• Country of Origin: Multiple

Dimensions

• Square Height: 0.156 in
• Head Height: 11/64 in
• Maximum Head Diameter: 23/32 in
• Maximum Neck Height: 3/16 in
• Minimum Head Diameter: 11/16 in
• Minimum Neck Width: 5/16 in
• Neck Width: 5/16 in
• Screw Size: 5/16 in
• Maximum Neck Width: 21/64 in
• Maximum Head Height: 11/64 in
• Minimum Neck Height: 5/32 in
• Head Width: 45/64 in
• Minimum Head Height: 5/32 in
• Thread Size: 5/16"-18
• Fastener Length: 2-1/4 in
• Neck Height: 11/64 in
• Drill Size: 21/64 in
• Square Width: 0.307 in
• Head Dia.: 0.688 in

Details

• Fastener Thread Type: UNC (Coarse)
• Grade: 2
• Head Style: Round
• Head Type: Round
• Carriage Bolt Type: Carriage Bolt
• Fastener Industry Standards: ASME B18.5
• For Use With: Grade 2 Zinc Nuts
• Tensile Strength: 74,000 psi
• Meets/Exceeds: ASME B18.5
• Fastener Thread Direction: Right Hand

This Carriage Bolts is a practical option for maintenance teams and procurement.

Recommended for production support and bench work and well-suited for replacement, upgrade, and stock-room use.

Highlights

• Works well in standardized part lists and preventative maintenance schedules.
• Clear specification formatting helps reduce ordering mistakes.
• Organized for straightforward purchasing and stocking.
• Suitable for maintenance, repair, and project-based procurement.

Notes: Confirm fit, compatibility, and any site-specific requirements prior to ordering or installation.