NAS1291-8

Nut, Self-Locking, Extended Washer

Part number: NAS1291-8
NSN: 5310-00-677-0659
NIIN: 00-677-0659
Item name: Nut, Self-Locking, Extended Washer
Manufacturer: National Aerospace Standards
CAGE code: 80205
FSC: 5310
Unit of issue: EA
DEMIL code: A

Alternate part numbers

NAS1291-8 CAGE 80205

Technical characteristics

Thread Class: 3B
Thread Direction: Right-hand
Locking Feature: Prevailing torque all metal design
Washer Outside Diameter: 0.814 inches maximum
Lubrication: Dry film lubricant
Overall Height: 0.350 inches minimum and 0.410 inches maximum
Nut Style: Hexagon
Washer Thickness: 0.040 inches minimum
Width Across Flats: 0.556 inches minimum and 0.566 inches maximum
Temp Rating: 450.0 deg fahrenheit nominal
Thread Series: UNJF
Thread Quantity per Inch: 20
Nominal Thread Size: 0.500 inches
Criticality Code Justification: FEAT
Special Features: Weapon system essential
Material: Steel overall
Surface Treatment: Cadmium overall
Surface Treatment Document and Classification: QQ-P-416 fed spec single treatment response overall
Specification/Standard Data: 80205-NAS1291 professional/industrial association standard

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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