Model: 7660439

Optical Instrument Window

Special Features:

All corners with a 0.310 in. Radius

Properties:

Width

Between 0.990 inches and 1.000 inches

Thickness

Between 0.190 inches and 0.200 inches

Length

Between 1.557 inches and 1.562 inches

Bevel Depth

Between 0.020 inches and 0.030 inches

Refraction Index

1.5170

Polished Surface

Both

Dispersion

64.5 angstroms

Reflection Reducing Surface

Both

Polished Periphery

Not provided

Bevel Angle In Deg

Between 42.000 and 48.000

Material

Glass, optical, mil-g-174, class 1, grade c, type 517-645

Material

Glass, optical, mil-g-174, class 1, grade c, type 517-645

Fsc Application Data

Telescope, panoramic

NSN

1240-00-864-2931

Part Number

7660439

Description

Window,optical Instrument

CAGE

19200

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 7660439 NSN 1240-00-864-2931

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:

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:

058130

UFC:

33120

LTL:

RATING VARIABLE

LCL:

WCC:

744

TCC:

SHC:

ACC:

Trailers/Vehicles

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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