Starrett 51139 Pin Vise Double End Collet 5.1mm

Product Description

The STARRETT 51139 is a double-end pin vise designed to hold small-diameter pins, drills, reamers, and similar tooling for precise hand operations. It uses a collet-style jaw with a special tapered collet that maximizes clamping surface contact, improving grip on delicate workpieces. The vise accepts stock up to 5.1mm (approximately 0.2 inches) at maximum capacity and down to approximately 0.11 inches at minimum capacity. Overall length is 4.141 inches with an overall diameter of 0.469 inches, making it a compact, hand-held tool suited for bench work in machining, toolmaking, and precision trade applications.

The STARRETT 51139 pin vise is used in bench-top precision work where small-diameter stock must be held securely for drilling, reaming, or filing by hand. It is appropriate for machinists, toolmakers, instrument technicians, and trade professionals who need a reliable hand-held holding device for fine work. The double-end design provides two jaw openings, allowing the user to select the appropriate collet end for different stock diameters without switching tools.

Key Features

• Double-end design provides two collet openings for flexible diameter range coverage
• Special tapered collet delivers maximum clamping surface for secure grip on small-diameter stock
• Collet-style jaw minimizes workpiece marring compared to standard chuck jaws
• Compact 4.141-inch overall length suits hand-held bench operations
• 5.1mm maximum capacity accommodates a broad range of small pins and drill shanks

Compatibility

Designed as an OEM-style hand tool suitable for general bench work requiring secure holding of small-diameter pins, drills, and round stock up to 5.1mm in diameter.

Installation Notes

The STARRETT 51139 is a hand-held bench tool and does not require permanent installation. Ensure the collet is fully seated and the end cap is tightened securely before applying rotational force to the workpiece. Do not exceed the rated jaw capacity, as over-tightening on oversized stock can damage the collet. No power tools or electrical shutoffs are required for use.