Gibraltar 677140-G Bullet Straight Locating Pin Steel

Product Description

The GIBRALTAR 677140-G is a bullet straight locating pin used in fixture and tooling setups to accurately position workpieces or components. The bullet-shaped nose guides the pin smoothly into a mating bushing or hole, reducing the risk of galling or misalignment on entry. Machined from steel for durability in demanding shop environments, this pin has a nose diameter of 0.3749 inches, a tail diameter of 0.3766 inches, and an overall length of 1.032 inches. The 0.407-inch collar diameter provides a positive stop against the fixture plate. Tolerance is held at plus 0.0000 inches on the nose. Toolmakers, fixture builders, and machine operators are the typical end users.

This locating pin is suited for use in drill fixtures, assembly jigs, and modular fixturing systems where repeatable part location is required. It is designed to press or slip into a liner or bushing — the liner compatibility code listed is UDB-635190. Applications span general machining, fabrication, and production tooling in both job-shop and manufacturing environments. The non-relieved shank design keeps the pin seated firmly without lateral flex under load.

Key Features

• Bullet nose shape allows smooth, guided entry into mating bushing or locating hole
• Steel construction provides wear resistance in high-cycle tooling applications
• Non-relieved shank for positive, stable seating in the fixture body
• Plus 0.0000 inches tolerance on nose diameter for precision fit
• Collar diameter of 0.407 inches acts as a positive stop against fixture surface
• Liner compatibility: UDB-635190

Compatibility

Compatible with liner UDB-635190. Designed as an OEM-style replacement or standard tooling component for use in drill jigs, assembly fixtures, and modular workholding setups requiring a bullet straight locating pin.

Installation Notes

Installation is typically performed by a toolmaker or fixture technician. Ensure the receiving bushing or liner bore is clean and free of chips before pressing or inserting the pin. Use appropriate hand tools or an arbor press for press-fit installations — do not strike the pin directly with a hammer. Verify fit and alignment before putting the fixture into production service.