NAS1804-4

Nut, Self-Locking, Extended Washer

Part number: NAS1804-4
NSN: 5310-01-123-1422
NIIN: 01-123-1422
Item name: Nut, Self-Locking, Extended Washer
Manufacturer: National Aerospace Standards
CAGE code: 80205
FSC: 5310 — Nuts and Washers
Unit of issue: EA
DEMIL code: A

Alternate part numbers

NAS1804-4 CAGE 80205
Replaces
cancelled
NSN
5310-00-302-0295

Technical characteristics

Thread Class: 3B
Thread Direction: Right-hand
Locking Feature: Prevailing torque all metal design
Washer Outside Diameter: 0.434 inches maximum
Lubrication: Dry film lubricant
Overall Height: 0.250 inches maximum
Nut Style: Double hexagon
Washer Thickness: 0.020 inches nominal
Width Across Flats: 0.305 inches min / 0.313 inches max
Temp Rating: 450.0 deg fahrenheit nominal
Thread Series: UNJF
Thread Quantity per Inch: 28
Hardness Rating: 45.0 rockwell C maximum
Nominal Thread Size: 0.250 inches
Material: Steel comp 601 or Steel comp H11
Material Spec: AMS 6304 or AMS 6487
Surface Treatment: Cadmium overall per QQ-P-416, class 2

Catalogue data is compiled from public DLA/FLIS sources and is provided for identification. Availability, condition and certification are confirmed on quotation. OmniSynk Distribution Services is a stocking distributor.

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