PIN, PULLEY GUARD TYPE K (P/N nas427-k21) - Serviceable, New Surplus

The NAS427-K21 is a steel spring pin conforming to NAS427 Type K specifications for aircraft pulley guard retention. This pin secures guard assemblies over control cable pulleys in flight-control systems, maintaining guard position during aircraft operation. The standardized dimensions ensure interchangeability across compatible pulley brackets.

Installation follows the aircraft maintenance manual and NAS427 requirements, with verification against the Illustrated Parts Catalog recommended before fitment.

What is the PIN, PULLEY GUARD TYPE K (P/N nas427-k21)?

The NAS427-K21 is a steel spring pin conforming to NAS427 Type K specifications for aircraft pulley guard retention. This pin secures guard assemblies over control cable pulleys in flight-control systems, maintaining guard position during aircraft operation.

Is the nas427-k21 a PMA or OEM part?

The PIN, PULLEY GUARD TYPE K may be available as an OEM (Original Equipment Manufacturer) or PMA (Parts Manufacturer Approval) part depending on condition and source. Both carry FAA certification for airworthiness. Currently available in: Serviceable, New Surplus. Contact us for sourcing details.

Does the nas427-k21 include installation hardware?

Installation hardware requirements vary by application. Check your aircraft's Structural Repair Manual (SRM) or Illustrated Parts Catalog (IPC) for the complete installation kit requirements for the PIN, PULLEY GUARD TYPE K. We stock related hardware and can help identify companion parts.

Can the nas427-k21 be shipped internationally?

Yes, we ship airframe components worldwide. International orders typically arrive within 3-14 business days depending on destination. Export documentation and customs forms are included. Contact us for international shipping quotes on the nas427-k21.