321290-1

View detailed technical data, stock status, and sourcing information for: 321290-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-637-4885

Item Name Code

01869

Assigment Date

01/01/1963 (63 years ago)

0.117 inches minimum and 0.123 inches maximum external prebent key width, 0.375 inches minimum and 0.379 inches maximum hole diameter, 0.084 inches minimum and 0.104 inches maximum external prebent key length, 0.059 inches minimum and 0.061 inches maximum internal straight key width, 0.615 inches minimum and 0.635 inches maximum 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: 0.375 inches minimum and 0.379 inches maximum
Outside Diameter: 0.615 inches minimum and 0.635 inches maximum
External Prebent Key Length: 0.084 inches minimum and 0.104 inches maximum
External Prebent Key Width: 0.117 inches minimum and 0.123 inches maximum
Internal Straight Key Width: 0.059 inches minimum and 0.061 inches maximum
Distance From Centerline To Top Of Internal Key: 0.157 inches minimum and 0.163 inches maximum
Distance From Centerline To Inside Of Prebent Key: 0.406 inches minimum and 0.416 inches maximum
Overall Distance Including Keys: 0.749 inches minimum and 0.759 inches maximum
Material Thickness: 0.031 inches nominal
External Prebent Key Angle: 90.0 degrees nominal
Material: copper alloy overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 2 fed spec single treatment response overall
Style Designator: key

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-409-9591	No Name Available	10/01/1979
5310-00-508-7923	No Name Available	01/01/1963
5310-00-527-3257	No Name Available	01/20/1972

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
10554986	Key Washer
12C1087	Key Washer
12C1087-1	Key Washer
2420465	Key Washer
300-590P13	Key Washer
321290-1	Key Washer
367567-1	Key Washer
43912798-001	Key Washer
468024001	Key Washer
59A5A134-1	Key Washer
9111565	Key Washer
A8834816REV2PT1	Key Washer
GR840A1	Key Washer
SC5310-0009-1	Key Washer
T275-310	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-00-637-4885?

The FSCG of the NSN 5310-00-637-4885 is 5310

Does the NSN 5310-00-637-4885 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-637-4885 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 5310-00-637-4885 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-637-4885 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 5310-00-637-4885 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963