Model: R557-49330APC16

Valve Seat

Properties:

Thread Class
2a single threaded portion
Flange Diameter
2.188 inches
Flange Seat To Disk End Height
0.438 inches
Under Flange Height
0.438 inches
Thready Qty Per Inch (tpi)
16 single threaded portion
Thread Size
2.000 inches single threaded portion
Seating Surface Shape
Flat
Body Stepped Inside Diameter
1.558 inches second step and 1.568 inches second step
Body Stepped Inside Diameter
1.436 inches third step and 1.440 inches third step
Body Stepped Inside Diameter
1.695 inches first step and 1.697 inches first step
Material
Cobalt alloy
Style Designator
Threaded flanged
Thread Series Designator
Un single threaded portion
NSN
4820-00-346-6529
Part Number
R557-49330APC16
Description
Seat,valve
CAGE
38056

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 R557-49330APC16 NSN 4820-00-346-6529

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

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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