National Stock Number (NSN) 1240-00-599-9215 (1240005999215) Parts List

Item Name	Window Optical Instrument
Federal Supply Group (FSG)	Fire Control Equipment
Federal Supply Class (FSC)	1240 Optical Sighting And Ranging Equipment
National Item Identification Number (NIIN)	00-599-9215 (005999215)
NCB Code	USA (00)
Manufacturer	Optical Specialties, Grayco Optical Corp, Upd Inc

Part Number	Manufacturer	Item Name	Cage Code	RFQ
5049912	optical specialties	window optical instrument	54637	RFQ
5049912	grayco optical corp	window optical inst	14001	RFQ
5049912	upd inc	window optical inst	5p920	RFQ

MRC	Criteria	Characteristic
FEAT	Special Features	CORNERS ROUNDED W/0.460 IN. RADIUS
ABRY	Length	37.940 MILLIMETERS NOMINAL
ABGL	Width	23.840 MILLIMETERS NOMINAL
BMSG	Polished Surface	BOTH
BMSK	Reflection Reducing Surface	BOTH
BMSM	Polished Periphery	NOT PROVIDED
ABNM	Thickness	3.070 MILLIMETERS NOMINAL
MRC	Decoded Requirement	Clear Text Reply
ZZZV	Fsc Application Data	TELESCOPE,PANORAMIC,M12
BMMX	Refraction Index	1.5170 NOMINAL
MATT	Material	GLASS, OPTICAL, JAN-G-174, TYPE 517-645, GRADE C