Precision Brand 19230 Flat Feeler Gage 0.004 in 10 Pack

Product Description

The PRECISION BRAND 19230 is a flat feeler gage leaf used to measure precise gaps and clearances in mechanical assemblies. Each leaf measures 0.004 inches (0.102 mm) thick, 5 inches long, and 0.5 inches wide. Constructed from high-carbon steel, the leaf delivers consistent stiffness and wear resistance across repeated use. This package contains 10 leaves of identical thickness. HVAC technicians, machinists, and maintenance mechanics rely on feeler gages like this one to verify valve clearances, bearing fits, spark plug gaps, and other tight tolerances where accurate gap measurement is critical to proper equipment function.

Flat feeler gage leaves are used across residential and commercial HVAC service, general mechanical maintenance, and industrial equipment repair. The 0.004-inch leaf is a commonly required thickness for checking close-tolerance clearances on compressors, motors, and rotating equipment. The 5-inch leaf length provides enough reach for most standard access points without adding unnecessary flex. Each leaf in this 10-pack is uniform in thickness, making them suitable for use individually or stacked to build up a target gap measurement.

Key Features

• 0.004-inch (0.102 mm) thickness for close-tolerance gap measurement
• Flat leaf style for straightforward single-plane clearance checks
• 5-inch leaf length with 0.5-inch width for reach and control
• High-carbon steel construction for durability and consistent flex resistance
• Pack of 10 leaves of identical thickness for job-site use or stacking

Compatibility

Designed as a standard flat feeler gage leaf for general mechanical and HVAC maintenance applications requiring 0.004-inch gap measurement.

Installation Notes

Feeler gage leaves should be inserted into the gap with light, consistent hand pressure — forcing a leaf can produce a false reading or damage the leaf. Power down and de-energize all equipment before checking clearances on rotating or electrically active components. Keep leaves clean and free of oil or debris to maintain measurement accuracy. High-carbon steel leaves can corrode if stored in humid conditions; wipe dry after use and store in a protective case.