Model: SM-B-28957

Observation Window

Special Features:

Four 0.169 in.Dia mtg holes spaced on 1.250 in.By2.500 in.Mtg centers

Properties:

Ply Quantity
1
Overall Length
3.000 inches
Overall Width
1.750 inches
Overall Thickness
0.125 inches
Environmental Protection
Weather resistant
Surface Finish
Polished
Material Transparency
Clear
Edge Type
Flat finish
Min. Tensile Strength (psi)
8000 pounds per square inch
Material
Plastic
Material Specification
Mil-p-5425 military specification single material response
Style Designator
Square corners
Fsc Application Data
Multiplexer, telephone and telegraph
NSN
9340-00-684-6336
Part Number
SM-B-28957
Description
Window,observation
CAGE
80063

A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.

Part SM-B-28957 NSN 9340-00-684-6336

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16880
FIIG:
A15000
Concept No.:
App. Key:
F
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:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
035315
UFC:
16255
LTL:
RATING VARIABLE
LCL:
--
WCC:
704
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7016900000
  • SITC: 66496
  • End Use: Glass-plate, sheet, etc.
  • NAICS: 327215
  • USDA: 1

Freight Class: Pressed or molded glass articles, wired or not, for building or construction;leaded glass windows etc; formed multicellular or foam glass

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