4M276-1

View detailed technical data, stock status, and sourcing information for: 4M276-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-168-4489

Item Name Code

15933

Assigment Date

12/19/1983 (42 years ago)

A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes:felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes:cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.

0.070 inches nominal radius, 0.765 inches minimum and 0.776 inches maximum recess diameter, 0.671 inches minimum and 0.680 inches maximum hole diameter, 0.210 inches nominal overall height, 1.000 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: 0.671 inches minimum and 0.680 inches maximum
Radius: 0.070 inches nominal
Outside Diameter: 1.000 inches nominal
Overall Height: 0.210 inches nominal
Recess Diameter: 0.765 inches minimum and 0.776 inches maximum
Material: steel comp 630 overall
Material Document And Classification: ams 5643 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Style Designator: recessed

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
10109959	Recessed Washer
4M276-1	Recessed Washer

FAQs

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

What is the FSCG of the NSN 5310-01-168-4489?

The FSCG of the NSN 5310-01-168-4489 is 5310

Does the NSN 5310-01-168-4489 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-168-4489 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 5310-01-168-4489 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-168-4489 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 5310-01-168-4489 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Mon, Dec 19, 1983