Starrett 52818 Feeler Stock Roll 0.021in X 0.5in X 20ft Steel

Product Description

The STARRETT 52818 is a tempered steel feeler stock roll designed for precision gap measurement and setting applications across mechanical, HVAC, and general trade service work. The roll measures 0.021 inches thick and 0.5 inches wide, with a total length of 20 feet, giving technicians the material to cut custom-length feeler gauges or shims on the job. Tempered steel construction provides consistent thickness tolerance and the spring-back rigidity needed for accurate gap checks. This format is preferred when standard fixed feeler gauges are too short or when custom widths are required for a specific application.

Feeler stock rolls are used wherever precise gap measurement is critical: valve clearance checks, bearing fits, gasket compression verification, burner assembly alignment, and equipment leveling in commercial HVAC and refrigeration service. The 0.021-inch thickness is a commonly referenced measurement point in mechanical adjustment procedures. The 20-foot roll length makes this suitable for shop use, service truck stocking, or repeated job-site cutting without requiring frequent reorder. Installation and fabrication trades keep feeler stock on hand as a general-purpose precision reference material.

Key Features

• Tempered steel construction maintains dimensional consistency and resists permanent deformation during use
• 0.021 inch thickness is a standard reference dimension for mechanical gap and clearance checks
• 0.5 inch width provides a practical blade profile for most service applications
• 20-foot roll length allows field-cutting to any required length
• Roll format reduces storage footprint compared to fixed-length gauge sets

Compatibility

Designed as a general-purpose feeler stock material suitable for use in mechanical, HVAC, refrigeration, and industrial service applications where a 0.021 inch gap reference is required.

Installation Notes

Cut to desired length using metal shears or a bench cutter rated for tempered steel. Deburr cut edges before use to avoid inaccurate readings or surface damage on mating components. When using feeler stock to set clearances on energized or pressurized equipment, de-energize or depressurize the assembly per applicable service procedures before inserting the gauge. Dispose of metal scrap per local shop safety practices.