Model: 7645552

Optical Instrument Window

Special Features:

Element in accord with specification mil-o-13830; spherical power not to exceed 3 fringes, astigmatism 2 fringes; light deviation not to exceed 2 minutes (0.033 deg) of arc; surfaces quali type 80-50; used on periscope and howitzers m109a2 and m109a3

Properties:

Diameter

Between 1.740 inches and 1.745 inches

Thickness

Between 0.240 inches and 0.250 inches

Surface Finish

Ground and polished

Bevel Depth

Between 0.020 inches and 0.030 inches

Polished Surface

Both

Polished Periphery

Provided

Bevel Angle In Deg

Between 42.000 and 48.000

Material

Glass, optical, mil-g-174, grade d, type 523-586

Material

Glass, optical, mil-g-174, grade d, type 523-586

NSN

1240-00-864-2936

Part Number

7645552

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 7645552 NSN 1240-00-864-2936

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:

1.7 X 1.7 X 0.3

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:

086700

UFC:

45955

LTL:

RATING VARIABLE

LCL:

65.0

WCC:

704

TCC:

SHC:

ACC:

Construction Materials

Pricing & Availability Check

Submit this form for stock availability and pricing.

How to Order

Ordering from buyaircraftparts.com

If you would like to order this optical instrument window (NSN 1240-00-864-2936) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours:	08:00-18:00 Eastern Standard Time
Phone:	+1 470-231-0824
Email:	Contact Form »

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