Model: 442R021

Valve Seat

Properties:

Overall Height
Between 0.123 inches and 0.127 inches
Taper Length
Between 0.062 inches and 0.064 inches
Taper Minor Diameter
Between 0.310 inches and 0.314 inches
Taper Major Diameter
Between 0.435 inches and 0.439 inches
Body Outside Diameter
Between 0.435 inches and 0.439 inches
Body Inside Diameter
Between 0.218 inches and 0.219 inches
Seat Angle In Deg
43.000
Seating Surface Shape
Angular
Material
Plastic polyamide
Style Designator
Plain
Fsc Application Data
Aircraft hydraulic system
NSN
4820-01-253-7662
Part Number
442R021
Description
Seat,valve
CAGE
98939

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.

Part 442R021 NSN 4820-01-253-7662

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
Concept No.:
App. Key:
A
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
UC
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8481909090
  • SITC: 74790
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi

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