Starrett 667S-10 Feeler Gage 0.01 in Stainless Parallel Leaf

Product Description

The STARRETT 667S-10 is a single-leaf feeler gage designed for precise gap and clearance measurement in mechanical and service applications. The parallel leaf measures 0.01 inches thick, 0.5 inches wide, and 12 inches long, providing a consistent cross-section along the full blade length. Constructed from stainless steel, the leaf resists corrosion and maintains dimensional stability in shop environments. This type of feeler gage is standard tooling for HVAC technicians, machinists, and field service professionals who need accurate, repeatable gap checks during equipment installation, adjustment, and maintenance.

The 667S-10 is suited for gap and clearance verification tasks across a broad range of trade applications. HVAC technicians use parallel-leaf feeler gages to check burner orifice spacing, heat exchanger clearances, and valve seating. Plumbers and pipefitters use them to verify flange face gaps and mechanical joint fitment. The 12-inch blade length accommodates reach into confined spaces where shorter blades are impractical. The 0.01-inch thickness makes this blade a frequently referenced size for fine tolerance checks on residential and light commercial equipment.

Key Features

• Parallel leaf profile provides uniform thickness along the full 12-inch blade length
• Stainless steel construction resists corrosion and shop-fluid contamination
• 0.01-inch thickness is a common reference size for fine-clearance verification
• 0.5-inch blade width offers stable seating across gap surfaces
• Single-leaf format allows direct selection without folding through a multi-blade set

Compatibility

Designed as a standard single-leaf feeler gage replacement or standalone blade for use in any application requiring a 0.01-inch parallel gap reference.

Installation Notes

Feeler gages are hand tools requiring no installation; however, power down or de-energize any equipment before inserting a blade into rotating or energized assemblies. Apply light, consistent drag force when checking gap tolerance — forcing the blade distorts the reading and can damage soft mating surfaces. Keep blades clean and lightly oiled when stored to preserve dimensional accuracy.