DD445S4901-34ALT1PC257

View detailed technical data, stock status, and sourcing information for: DD445S4901-34ALT1PC257
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-187-1476

Item Name Code

13393

Assigment Date

01/01/1963 (63 years ago)

A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes:laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes:disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.

round peripheral shape style, 1.375 inches nominal hole diameter, round center hole shape style, 0.031 inches nominal thickness, rectangular cross-sectional shape style

Product Characteristics

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

Cross-Sectional Shape Style: rectangular
Hole Diameter: 1.375 inches nominal
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.031 inches nominal
Overall Diameter: 1.984 inches nominal
Material: copper alloy overall
Material Document And Classification: qq-c-576 fed spec single material response overall

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
150-411FPC257	Flat Washer
150-411GPC257	Flat Washer
150-411KPC257	Flat Washer
150-411YPC300	Flat Washer
150-411ZPC300	Flat Washer
150-433YITEM60	Flat Washer
150-434YPC300	Flat Washer
150-434ZPC300	Flat Washer
150-618FFITEM39	Flat Washer
150-618FITEM39	Flat Washer
150-619FFPC257	Flat Washer
150-619FPC257	Flat Washer
20-257	Flat Washer
20-300Y	Flat Washer
389984PC257	Flat Washer
533829PC257	Flat Washer
831-1213ITEM425	Flat Washer
DD356S49-024PC300	Flat Washer
DD356S49-49ALT6PC300	Flat Washer
DD421S49-0214PC300	Flat Washer
DD421S49-0229PC300	Flat Washer
DD421S49-0238ITEM60	Flat Washer
DD423S49-0137PC257	Flat Washer
DD423S49-0159ITEM39	Flat Washer
DD423S49-0160PC257	Flat Washer
DD445S4901-34ALT1PC257	Flat Washer
DD445S4901-56ALT2ITEM39	Flat Washer
DD445S4901-57ALT1PC257	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-00-187-1476?

The FSCG of the NSN 5310-00-187-1476 is 5310

Does the NSN 5310-00-187-1476 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-187-1476 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 5310-00-187-1476 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-187-1476 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 5310-00-187-1476 was assigned to the Federal Catalog?

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