20500-29

View detailed technical data, stock status, and sourcing information for: 20500-29
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-261-8278

Item Name Code

14218

Assigment Date

01/01/1963 (63 years ago)

0.194 inches minimum and 0.202 inches maximum hole diameter, copper alloy overall material, 0.334 inches maximum outside diameter, 90.0 rockwell b minimum hardness rating, 0.047 inches minimum and 0.053 inches maximum material thickness

Product Characteristics

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

Hole Diameter: 0.194 inches minimum and 0.202 inches maximum
Outside Diameter: 0.334 inches maximum
Material Thickness: 0.047 inches minimum and 0.053 inches maximum
Hardness Rating: 90.0 rockwell b minimum
Material: copper alloy overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Style Designator: split helical-right hand

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-184-8968	No Name Available	12/01/1982
5310-00-193-7528	No Name Available	01/01/1983
5310-00-209-0862	No Name Available	09/01/1980
5310-00-209-0867	No Name Available	07/12/1980
5310-00-209-4931	No Name Available	06/23/1979
5310-00-227-1941	No Name Available	07/15/2015
5310-00-262-3594	No Name Available	04/01/1988
5310-00-576-7025	No Name Available	01/01/1983
5310-00-614-3535	No Name Available	01/01/1963
5310-00-616-2259	No Name Available	09/16/1968
5310-00-722-5569	No Name Available	04/28/2017
5310-00-763-5053	No Name Available	06/13/1967
5310-00-807-6354	No Name Available	10/01/1982
5310-00-871-4571	No Name Available	10/07/1970
5310-01-624-1723	No Name Available	05/01/2021

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
10121218	Lock Washer
118517-007	Lock Washer
1386 PLAIN	Lock Washer
1386 PLAINADX	Lock Washer
20500-29	Lock Washer
280457-631	Lock Washer
2HS106	Lock Washer
310-0080-00	Lock Washer
310-0080-000	Lock Washer
310-0100-000	Lock Washer
310-0101-000	Lock Washer
367496PC3	Lock Washer
4198010-42	Lock Washer
5310002618278	Lock Washer
5310PL0728295	Lock Washer
8-L-10	Lock Washer
800198	Lock Washer
860133-0005	Lock Washer
860133-5	Lock Washer
983026PC23	Lock Washer
C30195-11	Lock Washer
H41-0002-005	Lock Washer
MS35338-100	Lock Washer
N407P39011	Lock Washer
PS101013-35	Lock Washer
TF935C-C10L	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-261-8278?

The FSCG of the NSN 5310-00-261-8278 is 5310

Does the NSN 5310-00-261-8278 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-261-8278 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 5310-00-261-8278 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-261-8278 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 5310-00-261-8278 was assigned to the Federal Catalog?

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