Aircraft Spruce Cotter Pin Kit

Description

Cotter pins secure critical fasteners throughout your aircraft—from control surfaces to landing gear to engine mounts—by passing through bolt holes and spreading to prevent accidental loosening. The Aircraft Spruce Cotter Pin Kit bundles an assortment of common sizes so you’ll have the right pin on hand for routine maintenance, pre-flight inspections, and repairs without ordering individual quantities or making multiple trips to the parts counter.

This kit is essential for any owner-maintained aircraft or mechanic’s toolkit. Keep it handy for AD compliance checks, annual inspections, and corrosion replacement. Verify pin diameter and hole compatibility before installation; cotter pins must fit snugly through the bolt hole without excessive slop, and the spread legs must seat fully in the fastener slots. Stock a kit in your hangar and in your flight bag for backcountry situations where a loose fastener might otherwise ground you far from home.