PIN (P/N sp90b4) - New Surplus

The sp90b4 is a split cotter pin manufactured from nickel or nickel-copper alloy for corrosion resistance in aircraft hardware applications. With a 3/64 inch nominal diameter, this pin locks castellated nuts in place on airframe assemblies and structural fasteners. Installation involves inserting the pin through aligned holes in the bolt and nut, then spreading the legs to prevent rotation or loosening during flight vibration.

Numeric suffixes indicate length increments for different fastener sizes. Follow your aircraft maintenance manual and MS/NAS cotter-pin standards when selecting and installing this retention component.

What is the PIN (P/N sp90b4)?

The sp90b4 is a split cotter pin manufactured from nickel or nickel-copper alloy for corrosion resistance in aircraft hardware applications. With a 3/64 inch nominal diameter, this pin locks castellated nuts in place on airframe assemblies and structural fasteners.

Does the sp90b4 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The PIN 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 sp90b4 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 sp90b4.

Can I order the sp90b4 in custom quantities?

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