NAS1291-8

View detailed technical data, stock status, and sourcing information for: NAS1291-8
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-677-0659

Item Name Code

29730

Assigment Date

02/02/1968 (58 years ago)

3b thread class, right-hand thread direction, 0.814 inches maximum washer outside diameter, prevailing torque all metal design locking feature, dry film lubricant lubrication

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

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 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

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
NAS1291-8	Extended Washer Self-Locking Nut

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-00-677-0659?

The FSCG of the NSN 5310-00-677-0659 is 5310

Does the NSN 5310-00-677-0659 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-677-0659 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5310-00-677-0659 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-677-0659 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5310-00-677-0659 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Feb 2, 1968