400638-1-G

View detailed technical data, stock status, and sourcing information for: 400638-1-G
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-085-3251

Item Name Code

15938

Assigment Date

11/06/1979 (46 years ago)

46.0 rockwell c minimum and 49.0 rockwell c maximum hardness rating, 3.047 inches nominal hole diameter, 0.042 inches minimum material thickness, 0.295 inches minimum and 0.310 inches maximum overall height, 3.917 inches nominal outside diameter

Product Characteristics

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

Hole Diameter: 3.047 inches nominal
Outside Diameter: 3.917 inches nominal
Overall Height: 0.295 inches minimum and 0.310 inches maximum
Material Thickness: 0.042 inches minimum
Hardness Rating: 46.0 rockwell c minimum and 49.0 rockwell c maximum
Material: steel comp 1075 overall
Material Document And Classification: sae assn std single material response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-01-269-1333	No Name Available	01/01/1991

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
400638-1-0	Spring Tension Washer
400638-1-G	Spring Tension Washer

FAQs

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

What is the FSCG of the NSN 5310-01-085-3251?

The FSCG of the NSN 5310-01-085-3251 is 5310

Does the NSN 5310-01-085-3251 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-01-085-3251 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 5310-01-085-3251 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-085-3251 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 5310-01-085-3251 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Tue, Nov 6, 1979