Starrett 56613 Universal Snug 657 Series Holders

Product Description

The STARRETT 56613 is a universal snug accessory designed for use with 657 Series dial indicator holders. A snug is a clamping collar that attaches to the stem of a drop indicator, allowing it to seat securely within a holder or post clamp. This component is a standard fitment part used by machinists, tool and die technicians, and metrology professionals working with indicator setups on magnetic bases, surface plates, and machine tool fixtures. At 0.5 pounds, it is a compact, lightweight piece that integrates directly into existing 657 Series holder assemblies without modification.

The 56613 snug is intended for use in precision measurement setups where a drop-style dial indicator must be held at a fixed position during inspection or alignment work. Typical applications include machine tool setup, fixture alignment, and quality control inspection in shop or production environments. The universal snug design accommodates standard indicator stem dimensions used across common drop indicator models compatible with the 657 Series holder family.

Key Features

• Universal snug design for secure indicator retention in 657 Series holders
• Compatible with drop-style dial indicators using standard stem diameters
• Lightweight construction at 0.5 pounds for easy handling and setup
• Direct OEM-style replacement or supplemental accessory for existing 657 Series assemblies
• Sold individually for single-unit replacement or spare use

Compatibility

Designed for use with STARRETT 657 Series dial indicator holders as stated by the manufacturer.

Installation Notes

Installation is performed by machinists or metrology technicians as part of indicator holder setup. Before installing or repositioning the snug, ensure the indicator and holder assembly are free from any active measurement load or clamping pressure. No special tools are required beyond standard hand tools used for indicator post and holder adjustments. Follow the holder manufacturer's torque and clamping guidance for the 657 Series to avoid damaging the indicator stem.