Model: 640-2-11

Valve Seat

Special Features:

Cres mil-s-853 rockwell hardness c scale 38 min to 40 max

Properties:

Flange Diameter
Between 0.749 inches and 0.750 inches
Body Outside Diameter
Between 0.571 inches and 0.573 inches
Body Inside Diameter
Between 0.375 inches and 0.376 inches
Flange Seat To Disk End Height
Between 0.273 inches and 0.315 inches
Under Flange Height
Between 0.402 inches and 0.444 inches
Seal Accommodation Type
Grooved
Hardness Rating
43.0 rockwell c and 47.0 rockwell c
Seating Surface Shape
Angular
Material
Stainless steel
Material Specification
Qq-s-763 type 440c federal specification single material response or mil-s-853 class 6 military specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-s-5002 military specification all treatment responses
Test Data Document
81349-mil-i-6868 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
NSN
4810-00-511-1360
Part Number
640-2-11
Description
Seat,valve
CAGE
57817

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 640-2-11 NSN 4810-00-511-1360

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:
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:
095190
UFC:
49790
LTL:
70.0
LCL:
70.0
WCC:
713
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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