N-492904 ITEM 1

View detailed technical data, stock status, and sourcing information for: N-492904 ITEM 1
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-172-6557

Item Name Code

40088

Assigment Date

02/24/1984 (42 years ago)

Excludes:cover, speaking diaphragm.

0.020 inches nominal material thickness, rubber material, 2.105 inches nominal outside diameter, 1.200 inches nominal bead diameter, 0.500 inches nominal center hole diameter

Product Characteristics

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

Outside Diameter: 2.105 inches nominal
Material Thickness: 0.020 inches nominal
Center Hole Diameter: 0.500 inches nominal
Bead Diameter: 1.200 inches nominal
Material: rubber
Style Designator: special shaped

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-184-2212	No Name Available	04/01/1994

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
DRWN-556667 PIECE3	Special Actuator Valve Diaphragm
M-163005	Special Actuator Valve Diaphragm
M163005	Special Actuator Valve Diaphragm
N-492904	Special Actuator Valve Diaphragm
N-492904 ITEM 1	Special Actuator Valve Diaphragm

FAQs

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

What is the FSCG of the NSN 4820-01-172-6557?

The FSCG of the NSN 4820-01-172-6557 is 4820

Does the NSN 4820-01-172-6557 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-172-6557 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 4820-01-172-6557 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-172-6557 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 4820-01-172-6557 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Fri, Feb 24, 1984