Klein Tools 3257 Bull Pin 12 in X 1-1/16 in Top X 3/8 in Point

Product Description

The KLEIN TOOLS 3257 is a structural bull pin used to align bolt holes in steel connections during ironwork, steel erection, and structural assembly. Measuring 12 inches in overall length with a 1-1/16 inch top diameter and a 3/8 inch tapered point diameter, this bull pin is sized for demanding alignment tasks on job sites. The tapered point enters misaligned holes and draws them into registration so fasteners can be installed cleanly. It is a hand tool carried by ironworkers, structural steel erectors, and construction tradespeople working on steel-framed structures, towers, and similar assemblies.

This bull pin is suited for residential and commercial structural steel applications where bolt-hole alignment is required during erection sequences. It performs in both initial fit-up and adjustment phases of steel connection work. The 12-inch length provides adequate leverage for aligning heavier steel members without excessive effort. Tradespeople use this pin in conjunction with spud wrenches and other ironworker hand tools as part of standard steel erection procedures.

Key Features

• 12-inch overall length for reach and leverage during hole alignment
• 1-1/16 inch top diameter provides a secure grip surface and positive stop
• 3/8 inch tapered point designed to enter and align misaligned bolt holes
• Weighs 1.7 pounds for a balance of mass and portability on the iron
• Sold individually as a single unit

Compatibility

Designed as an OEM-style ironworker bull pin for use in structural steel bolt-hole alignment applications where a 12-inch tapered alignment pin is specified.

Installation Notes

Bull pins are driven by hand or with a hammer to align steel holes before bolts are inserted. Always wear appropriate hand and eye protection when driving or retrieving bull pins. Never use a bull pin as a permanent fastener. Follow applicable OSHA and site safety requirements for structural steel erection when working at elevation.

Technical Specifications

• Overall Length: 12 inches
• Top Diameter: 1-1/16 inches
• Point Diameter: 3/8 inches
• Weight: 1.7 pounds
• Sold As: Each
• UPC: 092644666575

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: 3257