Spi 91-435-8 Feeler Stock Roll 0.018 in High Carbon Steel

Product Description

The SPI 91-435-8 is a high carbon steel feeler stock roll used for precise gap measurement, shimming, and clearance checking in mechanical and HVAC service applications. At 0.018 inches thick and 0.5 inches wide, the roll provides 25 feet of usable strip material that can be cut to any required length in the field. High carbon steel construction delivers consistent thickness tolerance and resistance to deformation under repeated use. Technicians working on compressor clearances, valve seats, bearing fits, or burner orifice gaps rely on this type of stock for repeatable, accurate measurements without introducing measurement error from worn gauges.

This feeler stock roll suits trade professionals who need a versatile, field-cuttable gauge material rather than fixed-length blades. Typical applications include HVAC equipment servicing, refrigeration compressor clearance checks, burner alignment, and general mechanical assembly work. The 25-foot roll length makes it practical for shops or service vehicles where multiple jobs demand varied strip lengths from a single piece of stock.

Key Features

• 0.018 inch thickness for fine-clearance measurement and shimming tasks
• 0.5 inch width provides adequate surface contact for stable gap readings
• 25-foot roll length allows field-cutting to any required dimension
• High carbon steel construction maintains consistent thickness and resists deformation
• Compact roll format stores easily in a tool bag or service van

Compatibility

Designed as a general-purpose feeler stock for use across residential and light commercial HVAC, refrigeration, and mechanical service applications where 0.018 inch clearance gauging is required.

Installation Notes

Feeler stock is installed or applied by HVAC technicians, refrigeration mechanics, and general service technicians. Power down and lock out any equipment before inserting feeler stock into a gap or clearance point. Use clean aviation snips or metal shears to cut strips to length. Avoid bending the strip sharply at the measurement point, as this can introduce a set that alters the effective thickness reading.