Flat Washer 4x7x1T - Hirobo HI2506063  [HI2506063]

Durability and fit guidance

This Hirobo HI2506063 flat washer serves as an accessory for helicopter maintenance and general assembly tasks. The 4x7x1T code identifies the washer's nominal inner diameter, outer diameter, and thickness as referenced by the manufacturer and model number.

Typical roles include acting as a spacer or load-distribution washer in rotor linkages, frame joints, and other fastening points where correct spacing reduces wear. The washer helps control play and ensures steady contact between mating parts without changing component geometry.

Service advice: inspect the washer regularly for signs of wear, deformation, or corrosion and confirm clearances before final assembly. Replace any washer that no longer provides a flat, reliable seating surface to preserve fastener performance in helicopter assemblies.