NAS577B7A

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-317-8989

Item Name Code

15891

Assigment Date

04/08/1990 (36 years ago)

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing,ball,duplex. Excludes:bearing,ball,airframe.

floating self-locking barrel nut style, dry film lubricant lubrication, right-hand thread direction, prevailing torque all metal design locking feature, 3b thread class

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
Lubrication: dry film lubricant
Nut Style: floating self-locking barrel
Nut Diameter: 0.775 inches minimum and 0.778 inches maximum
Nut Length: 0.865 inches minimum and 0.875 inches maximum
Barrel Height: 0.460 inches minimum and 0.470 inches maximum
Nut Height: 0.625 inches maximum
End Item Identification: c-5b aircraft
Thread Series: unjf
Thread Quantity Per Inch: 20
Nominal Thread Size: 0.437 inches
Material: steel comp 8740 or steel comp 4340 overall
Material Document And Classification: mil-s-6049 mil spec 1st material response or ams 6322 assn std 1st material response or mil-s-8844,class 1 mil spec 2nd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 2 fed spec single treatment response overall
Specification/Standard Data: 80205-nas577 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
NAS577B7A	Barrel Self-Locking Nut
SL418-7	Barrel Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-317-8989?

The FSCG of the NSN 5310-01-317-8989 is 5310

Does the NSN 5310-01-317-8989 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-317-8989 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 5310-01-317-8989 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-317-8989 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 5310-01-317-8989 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Sun, Apr 8, 1990