Model: 349-00

Valve Seat

Special Features:

Weapon system essential

Properties:

Thread Class
2a single threaded portion
Flange Diameter
1.250 inches
Flange Seat To Disk End Height
0.375 inches
Under Flange Height
1.813 inches
Thready Qty Per Inch (tpi)
20 single threaded portion
Thread Size
1.125 inches single threaded portion
Seating Surface Shape
Flat
Body Stepped Inside Diameter
0.750 inches second step
Body Stepped Inside Diameter
0.755 inches first step
Criticality Code Justification
Feat
Material
Steel comp 303
Style Designator
Threaded flanged
Thread Series Designator
Un single threaded portion
NSN
4820-01-173-4165
Part Number
349-00
Description
Seat,valve
CAGE
55378

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 349-00 NSN 4820-01-173-4165

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:
CRITL:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
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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