Model: 177692-81

Valve Seat

Properties:

Flange Diameter
Between 0.497 inches and 0.499 inches
Body Outside Diameter
Between 0.377 inches and 0.379 inches
Body Inside Diameter
Between 0.280 inches and 0.281 inches
Seat Radius
Between 0.005 inches and 0.025 inches
Flange Seat To Disk End Height
0.075 mils and 0.076 centimeters
Under Flange Height
Between 0.068 inches and 0.073 inches
Seating Surface Shape
Radial
Material
Plastic polyamide
Material Specification
Mil-m-20693, type 3, grade natural color military specification single material response
Style Designator
Plain flanged
NSN
4820-00-136-2024
Part Number
177692-81
Description
Seat,valve
CAGE
99657

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 177692-81 NSN 4820-00-136-2024

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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