GF820B-4B

View detailed technical data, stock status, and sourcing information for: GF820B-4B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-430-9251

Item Name Code

42535

Assigment Date

05/04/1996 (30 years ago)

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

0.250 inches nominal overall height, 0.221 inches nominal hole diameter, 0.562 inches nominal outside diameter, 0.318 inches minimum and 0.322 inches maximum recess diameter, 0.188 inches nominal recess depth

Product Characteristics

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

Hole Diameter: 0.221 inches nominal
Outside Diameter: 0.562 inches nominal
Overall Height: 0.250 inches nominal
Recess Diameter: 0.318 inches minimum and 0.322 inches maximum
Recess Depth: 0.188 inches nominal
Mounting Method: slips-on
Material: copper alloy 360 overall
Material Document And Classification: qq-b-626 1/2 hard fed spec single material response overall
Surface Treatment: nickel overall
Surface Treatment Document And Classification: qq-n-290 fed spec single treatment response overall
Style Designator: round

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
GF820B-4B	Handle Ferrule

FAQs

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

What is the FSCG of the NSN 5340-01-430-9251?

The FSCG of the NSN 5340-01-430-9251 is 5340

Does NSN 5340-01-430-9251 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 5340-01-430-9251 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-430-9251 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5340-01-430-9251 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Sat, May 4, 1996