WASHER (P/N ms21206-4) - New Surplus

Name: WASHER
Brand: Aircraft Parts Store
SKU: ms21206-4

P/N: ms21206-4

Category: Fasteners & Hardware

Contact for quote

In Stock (2 available)

Submit RFQ Call for Pricing

This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).

Available Inventory

Condition	Stock
New Surplus	2 Available

Product Description

The MS21206-4 is a steel 4130 flat washer conforming to Military Standard MS21206. With a 0.251–0.255 inch hole diameter and 0.460–0.470 inch outer diameter, it distributes bearing loads and protects mating surfaces beneath 1/4-inch bolts and nuts in structural assemblies. The washer spreads clamp force across a wider area, preventing fastener pull-through and surface damage in aerospace joints.

Install per aircraft maintenance manual specifications, verifying proper fit before applying torque to fasteners.

Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.

Frequently Asked Questions

What is the WASHER (P/N ms21206-4)?

The MS21206-4 is a steel 4130 flat washer conforming to Military Standard MS21206. With a 0.

Does the ms21206-4 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The WASHER conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the ms21206-4 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the ms21206-4.

Can I order the ms21206-4 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The WASHER is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.