Valve Seat

181481-81-1
(NSN) National Stock Number
4820-00-412-3606
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
22113
Schedule B Code
8481909090
Summary

0.309 inches nominal flange diameter, 0.309 inches nominal body outside diameter, 0.195 inches nominal body inside diameter, 0.200 inches nominal flange seat to disk end height, 0.590 inches nominal under flange height, 45.000 nominal seat angle in deg

DAC HCC DMIL RNCC
5 - - 3
RNVC SADC MSDS RNAAC
2 - - HD
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
Flange Diameter
0.309 inches nominal
Details The length of a straight line which passes through the center of a flange,and terminates at the circumference.
Body Outside Diameter
0.309 inches nominal
Details The length of a straight line which passes through the center of the body,and terminates at the outside circumference.
Body Inside Diameter
0.195 inches nominal
Details The length of a straight line which passes through the center of a body,and terminates at the inside circumference.
Flange Seat To Disk End Height
0.200 inches nominal
Details None.
Under Flange Height
0.590 inches nominal
Details None.
Seat Angle In Deg
45.000 nominal
Details The angle of the end surface upon which the mated surface seats,expressed in degrees.
Seating Surface Shape
angular
Details The physical configuration of the surface of the seat.
Material
plastic polyhexamethylene adipamide overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
mil-m-20693,comp 1,type 1 mil 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.
Style Designator
plain flanged
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
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
- - - -
RVC WCC TCC SHC
- - - -
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FAQs
Frequently asked questions for NSN 4820-00-412-3606
What is the NIIN of the NSN 4820-00-412-3606?
The National Item Identification Number (NIIN) of the NSN 4820-00-412-3606 is 00-412-3606
When the NSN 4820-00-412-3606 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Tue, Jan 25, 1972
Does the NSN 4820-00-412-3606 contain any precious metals?
Type/content is unknown
Does the NSN 4820-00-412-3606 contain any hazardous material?
No data in HMIRS

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