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NSN 1240-00-864-2936, 1240008642936
WINDOW,OPTICAL INSTRUMENT

Federal Supply Classification
FSC 1240 - Optical Sighting and Ranging Equipment
National Item Identification Number
NIIN 008642936
Codification Country
United States
Item Name Code
INC 10908
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 1240-00-864-2936

National Stock Number (NSN) 1240-00-864-2936, or NIIN 008642936, (window,optical instrument) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over 5 years.

This NSN is unique to one weapons system.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 10908. [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.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1240008642936 does not contain precious metals.

This NSN is associated to Schedule B 9803200000: military equipments not identified by kind. The Schedule B End Use is listed as military apparel and footwear.

This information was last updated on .


Technical Characteristics

BEVEL ANGLE IN DEG
(BMSP) 42.000 MINIMUM AND 48.000 MAXIMUM
BEVEL DEPTH
(AJEF) 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM
DIAMETER
(ABMZ) 1.740 INCHES MINIMUM AND 1.745 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) MIL-G-174, GRADE D, TYPE 523-586 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIAL
(MATT) GLASS OPTICAL
POLISHED PERIPHERY
(BMSM) PROVIDED
POLISHED SURFACE
(BMSG) BOTH
SPECIAL FEATURES
(FEAT) ELEMENT IN ACCORD WITH SPEC 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 QUALITY 80-50; USED ON PERISCOPE AND HOWITZERS M109A2 AND M109A3
THICKNESS
(ABNM) 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
SURFACE FINISH
(AGYE) GROUND AND POLISHED
MATERIAL
(MATL) GLASS, OPTICAL, MIL-G-174, GRADE D, TYPE 523-586
III MATERIAL
(MATT) GLASS, OPTICAL, MIL-G-174, GRADE D, TYPE 523-586
III MATERIAL
(MATL) GLASS, OPTICAL, MIL-G-174, GRADE D, TYPE 523-586
UNABLE TO DECODE
(MATL) UNABLE TO DECODE
MATERIAL
(MATT) GLASS, OPTICAL, MIL-G-174, GRADE D, TYPE 523-586

Manufacturer Part Numbers


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