Model: 55S-0137M-001

Observation Window

Special Features:

Heat strengthened

Properties:

Overall Diameter

3.906 inches

Overall Thickness

0.500 inches

Surface Finish

Fine finished

Material Transparency

Clear

Material

Glass

Style Designator

Circular

NSN

9340-01-131-8083

Part Number

55S-0137M-001

Description

Window,observation

CAGE

53553

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 55S-0137M-001 NSN 9340-01-131-8083

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16880

FIIG:

A15000

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

035315

UFC:

16255

LTL:

RATING VARIABLE

LCL:

WCC:

704

TCC:

SHC:

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