CR77054PC238

View detailed technical data, stock status, and sourcing information for: CR77054PC238
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-149-2359

Item Name Code

22113

Assigment Date

01/01/1961 (65 years ago)

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

0.500 inches nominal body inside diameter, 1.251 inches nominal body outside diameter, 60.0 rockwell c minimum and 64.0 rockwell c maximum face hardness rating, 0.563 inches nominal overall height, 60.0 rockwell c minimum and 64.0 rockwell c maximum body hardness rating

Product Characteristics

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

Overall Height: 0.563 inches nominal
Body Outside Diameter: 1.251 inches nominal
Body Inside Diameter: 0.500 inches nominal
Hardness Rating: 60.0 rockwell c minimum and 64.0 rockwell c maximum body
Hardness Rating: 60.0 rockwell c minimum and 64.0 rockwell c maximum face
Seating Surface Shape: flat
Material: steel comp 2315 overall
Material Document And Classification: sae 2315 assn std single material response overall
Style Designator: plain

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2520-00-741-6799	No Name Available	10/14/1970

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
293751PC3	Valve Seat
4820001492359	Valve Seat
7416799	Valve Seat
B56059	Valve Seat
CR4562PC226	Valve Seat
CR56147PC238	Valve Seat
CR56159PC238	Valve Seat
CR60158PC206	Valve Seat
CR60170PC206	Valve Seat
CR63105PC206	Valve Seat
CR63117PC206	Valve Seat
CR64551PC226	Valve Seat
CR64562PC226	Valve Seat
CR77042PC238	Valve Seat
CR77054PC238	Valve Seat
CR77080PC238	Valve Seat
CR77092PC238	Valve Seat
CR77102PC238	Valve Seat
CR77114PC238	Valve Seat
CR80442PC226	Valve Seat
CR80453PC226	Valve Seat
XVP56059	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-149-2359?

The FSCG of the NSN 4820-00-149-2359 is 4820

Does the NSN 4820-00-149-2359 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-149-2359 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 4820-00-149-2359 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-149-2359 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 4820-00-149-2359 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961