639289

View detailed technical data, stock status, and sourcing information for: 639289
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-439-3370

Item Name Code

05277

Assigment Date

12/08/1969 (56 years ago)

hexagon nut style, prevailing torque all metal design locking feature, 3b thread class, 0.250 inches maximum nut height, right-hand thread direction

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
Nut Style: hexagon
Nut Height: 0.250 inches maximum
Width Across Flats: 0.367 inches minimum and 0.376 inches maximum
Thread Series: unf
Thread Quantity Per Inch: 32
Hardness Rating: 37.0 rockwell c minimum and 43.0 rockwell c maximum
Nominal Thread Size: 0.190 inches
Criticality Code Justification: feat
Bearing Surface Type: chamfered
Special Features: critical features, tolerances, fit restrictions, material properties andmanufacturing process
Material: steel comp 1035 overall
Material Document And Classification: ams 5080 assn std single material response overall
Precious Material: silver
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: ams 2400 assn std single treatment response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-208-3215	No Name Available	09/01/1991

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
157042	Hexagon Self-Locking Nut
639289	Hexagon Self-Locking Nut
D1801-02	Hexagon Self-Locking Nut
H29123-3	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-439-3370?

The FSCG of the NSN 5310-00-439-3370 is 5310

Does the NSN 5310-00-439-3370 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-439-3370 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 5310-00-439-3370 contain precious materials?

Item contains silver.

Does NSN 5310-00-439-3370 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 5310-00-439-3370 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Mon, Dec 8, 1969