AN310C4 - NUT, PLAIN, CASTELLATED, HEXAGON, NEW SURPLUS, SOLD PER EACH, NSN: 5310-00-167-1280, NIIN: 1671280

AN310C4 - NUT, PLAIN, CASTELLATED, HEXAGON

NSN: 5310-00-167-1280, NIIN: 1671280
New Surplus, Sold Per Each

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A Castellated Hex Nut is a hexagonal nut with notches on one end, resembling the battlements of a castle. These notches allow a cotter pin or wire to secure the nut to a bolt, preventing it from loosening under vibration or torque.

Specifications

Nut Style: Castellated, Hexagon
Bearing Surface Type: Faced- Washer
Surface Treatment: Passivate
Material: Steel
Countersink Angle: 109.0° Min - 111.0° Max - Nut
Nut Height: 0.265" Min - 0.297" Max
Width Across Flats: 0.428" Min - 0.440" Max
Thread Class: 3B
Thread Direction: Right-Hand
Thread Quantity Per Inch: 28
Thread Series: Unf
Thread Size: 0.250"

Part Number Info

Part Number: AN310C4
Unpunctuated: AN310C4
NSN: 5310-00-167-1280
NIIN: 1671280

Potential Alternates: FF-N-836, K5596404, 907998, 5310PL0927479, 10116618

Replaces Cancelled NSN: 5310-00-734-5535, 5310-00-364-9733

New Surplus: These parts are classified as new and unused, meaning they have not been installed or placed into service. However, they come without traceability or original manufacturer certifications, which might be required for certain high-level regulatory uses. Our company provides its own Certificate of Conformance (CoC) as a statement of assurance that the parts are in good working condition and have been sourced from reliable channels. These are ideal when the focus is on cost-effectiveness without compromising on quality.

Sold Per Each: This item is sold individually, with the price listed for a single unit. Perfect for purchasing the exact quantity needed without the requirement to buy in bulk. For larger quantities, consider reviewing any available bulk pricing options.

Alternate Part Numbers: Due to the nature of ever-evolving part numbering structure, multiple part numbers may meet the same specifications and performance standards. If only an alternate part number is available, we will contact you to confirm compatibility. We strongly recommend consulting the appropriate repair manuals to ensure accuracy before using an alternate part.