1240-00-990-8983, WINDOW,OPTICAL INSTRUMENT

National Stock Number:
1240-00-990-8983

Federal Supply Class:
1240

National Item Identification Number:
009908983

Description:
WINDOW,OPTICAL INSTRUMENT

Detail:
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.

Manufacturer Information:

1240009908983	A00AM	E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE
1240009908983	SCY13	E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE
8619869	19200	US ARMY ARDEC RDECOM
8619869	22255	PLX INC.
8619869	A9271	GORIZIANE GROUP SPA

Techincal Specification:

BEVEL ANGLE IN DEG	42.000 NOMINAL AND 48.000 NOMINAL
BEVEL DEPTH	0.062 INCHES MINIMUM AND 0.078 INCHES MAXIMUM
LENGTH	9.734 INCHES MINIMUM AND 9.750 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-G-174, CLASS 1, GRADE C, TYPE 517-645 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
MATERIAL	GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED
POLISHED PERIPHERY	NOT PROVIDED
POLISHED SURFACE	BOTH
REFLECTION REDUCING SURFACE	BOTH
THICKNESS	0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
WIDTH	3.984 INCHES MINIMUM AND 4.000 INCHES MAXIMUM

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