NSN 4820-01-442-9940
Valve Seat Insert
About this product
2.117 inches flange diameter, 0.216 inches flange seat to disk end height, 18 single threaded portion thready qty per inch (tpi), criticality code justification: zzzy.
Manufacturer part number 803-6397434-X51XXX-022 for national stock number 4820014429940.
Datasheet
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Product description
Valve Seat NSN 4820-01-442-9940.
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MPN or Model
803-6397434-X51XXX-022
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Schedule B
8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi) -
NMF (National Motor Freight)
051080 - Faucets, Bibcocks, Gates Valves -
Thread Class
3a single threaded portion -
Flange Diameter
2.117 inches -
Flange Seat To Disk End Height
0.216 inches -
Thready Qty Per Inch (tpi)
18 single threaded portion -
Thread Size
1.9375 inches single threaded portion -
Criticality Code Justification
Zzzy -
Material
Cobalt comp 1 -
Material Specification
Mil-c-24252 military specification single material response -
Style Designator
Threaded flanged -
Thread Series Designator
Uns single threaded portion -
Reference Number Differentiating Characteristics
Quality control iaw navships 0948-045-7010 material identification and control instruction for level 1 items
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Valve Seat
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.
![Mechanic Bill explains Valve Seat Insert](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 4820-01-442-9940 valve seatManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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803-6397434-X51XXX-022 | Naval Sea Systems Command |
803-6397434-X51XX-049 | Naval Sea Systems Command |
803-6397434-X51XX-049L1 | Naval Inventory Control Point |
803-6397434-X51XXX-022L1 | Naval Inventory Control Point |
Stock Check
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