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Worldwide distributor of NSN parts and consumables located in the USA.

Valve Seat

Model / MPN: 38903-00-58 | NSN: 4820-00-595-4648
ITAR Registered seal

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.

Product Details
NATO Stock Number
4820-00-595-4648
Sold in multiples of
1 EA
DEMIL
NO
Flange Diameter
1.750 inches
Body Outside Diameter
1.312 inches
Body Inside Diameter
0.938 inches
Flange Seat To Disk End Height
0.719 inches
Under Flange Height
0.281 inches
Seating Surface Shape
Flat
Material
Steel
Surface Treatment
Chromium
Style Designator
Plain flanged
38903 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7MC17TR842 Seat, Valve 2 EA 08/14/2017
SPE7MC17TT339 Seat, Valve 2 EA 09/15/2017

Pricing and Availability

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38903-00-58 Cross Reference
  • 23804NPC4