975-7128

View detailed technical data, stock status, and sourcing information for: 975-7128
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-975-7128

Item Name Code

22113

Assigment Date

01/01/1962 (64 years ago)

Two or more complete ring, piston grouped for a single piston or for all pistons of an internal combustion engine, air compressor, or the like.

0.095 inches minimum and 0.105 inches maximum flange seat to disk end height, 0.248 inches minimum and 0.252 inches maximum body outside diameter, 0.145 inches minimum and 0.155 inches maximum under flange height, 0.434 inches minimum and 0.436 inches maximum flange diameter, 0.250 inches nominal overall height

Product Characteristics

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

Flange Diameter: 0.434 inches minimum and 0.436 inches maximum
Overall Height: 0.250 inches nominal
Body Outside Diameter: 0.248 inches minimum and 0.252 inches maximum
Flange Seat To Disk End Height: 0.095 inches minimum and 0.105 inches maximum
Under Flange Height: 0.145 inches minimum and 0.155 inches maximum
Seat Angle In Deg: 90.000 nominal
Hardness Rating: 58.0 rockwell c minimum and 60.0 rockwell c maximum overall
Seating Surface Shape: angular
Body Stepped Inside Diameter: 0.124 inches minimum and 0.126 inches maximum first step
Body Stepped Inside Diameter: 0.250 inches nominal second step
Material: steel corrosion resisting overall
Material Document And Classification: qq-s-763,class 440c fed spec single material response overall
Surface Treatment: passivate overall
Style Designator: plain

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
975-7128	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-975-7128?

The FSCG of the NSN 4820-00-975-7128 is 4820

Does the NSN 4820-00-975-7128 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-975-7128 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 4820-00-975-7128 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-975-7128 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 4820-00-975-7128 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962