Valve Seat

28485
(NSN) National Stock Number
4820-00-368-9510
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
22113
Schedule B Code
8481909090
Summary

2a single threaded portion thread class, flat seating surface shape, steel overall material, qq-s-763 fed spec single material response overall material document and classification, passivate overall surface treatment, unef single threaded portion thread series designator

DAC HCC DMIL RNCC
2 - - 3
RNVC SADC MSDS RNAAC
2 - - AX
Identification

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.

INC FIIG Concept Condition
22113 A15500 - 2
Specifications
Thread Class
2a single threaded portion
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Seating Surface Shape
flat
Details The physical configuration of the surface of the seat.
Material
steel overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
qq-s-763 fed spec single material response overall
Details The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.
Surface Treatment
passivate overall
Details The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
Thread Series Designator
unef single threaded portion
Details A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N U - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
29300 - W -
RVC WCC TCC SHC
- 576 Z 9
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FAQs
Frequently asked questions for NSN 4820-00-368-9510
What is the NIIN of the NSN 4820-00-368-9510?
The National Item Identification Number (NIIN) of the NSN 4820-00-368-9510 is 00-368-9510
When the NSN 4820-00-368-9510 was assigned to the Federal Catalog?
It was assigned 50 years ago, on Sun, Mar 3, 1974
Does the NSN 4820-00-368-9510 contain any precious metals?
Type/content is unknown
Does the NSN 4820-00-368-9510 contain any hazardous material?
No data in HMIRS

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