Model: MIL1797

Optical Instrument Window

Properties:

Diameter

Between 46.6 millimeters and 47.0 millimeters

Thickness

Between 7.6 millimeters and 8.0 millimeters

Surface Finish

Polished

Refraction Index

1.5170

Polished Surface

Both

Dispersion

64.5 angstroms

Reflection Reducing Surface

Both

Polished Periphery

Not provided

Material

Glass, optical, jan-g-174, grade b

Material

Glass, optical, jan-g-174, grade b

Fsc Application Data

Optical sighting and ranging equipment

NSN

1240-00-210-4384

Part Number

MIL1797

Description

Window,optical Instrument

CAGE

06175

A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.

Part MIL1797 NSN 1240-00-210-4384

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

10908

FIIG:

T271-F

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:

0.1000lbs

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:

061700

UFC:

34580

LTL:

RATING VARIABLE

LCL:

WCC:

72D

TCC:

SHC:

ACC:

Instruments/Radio

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Schedule B and Export

Schedule B: 9803200000
SITC: 93100
End Use: Military apparel and footwear
NAICS: 990000
USDA: 1

Freight Class: Military equipments not identified by kind