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NSN 1240-00-382-0990, 1240003820990
RETAINER,OPTICAL ELEMENT

Federal Supply Classification
FSC 1240 - Optical Sighting and Ranging Equipment
National Item Identification Number
NIIN 003820990
Codification Country
United States
Item Name Code
INC 22451
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 1240-00-382-0990

National Stock Number (NSN) 1240-00-382-0990, or NIIN 003820990, (retainer,optical element) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

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

There has been very little 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: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 22451. [A CYLINDRICAL, EXTERNALLY THREADED ITEM HAVING A CENTRALLY LOCATED HOLE SPECIFICALLY DESIGNED TO RETAIN BY MEANS OF EITHER A RAISED BOX (SHOULDER), OR COUNTERBORE, COUNTERSINK, OR A SIMILAR SHAPED RECESS, AN OPTICAL ELEMENT SUCH AS A LENS, RETICLE, CELL, AND THE LIKE, IN OPTICAL ASSEMBLIES. IT MUST HAVE DRILLED HOLES OR SLOTS TO FACILITATE ASSEMBLY AND DISASSEMBLY. FOR ITEMS WHICH HOUSE THE OPTICAL ELEMENT(S), AND FORM THE INTERNAL OR CENTRAL PORTIONS OF AN OPTICAL SYSTEM, SEE CELL, OPTICAL ELEMENT. EXCLUDES:RING, EXTERNALLY THREADED.]. 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 1240003820990 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

UNABLE TO DECODE
(MATL) UNABLE TO DECODE
DRIVE FACILITY ANGULAR SPACING IN DEG
(BMTN) 180.0
DRIVE TYPE
(AKCV) SLOTTED
DEPTH
(AEJZ) 0.050 INCHES NOMINAL
END ITEM IDENTIFICATION
(AGAV) TELESCOPE MK74
FLANGE THREAD SIZE
(BPGB) 2.750 IN.-32
GUIDE DESIGN
(BMTQ) THREAD CHAMFER
GUIDE LOCATION
(BMTR) BOTH EDGES
HOLE OR SLOT QUANTITY
(ABKT) 2
HOLE DIAMETER
(AAUB) 2.630 INCHES NOMINAL
INTERNAL ANNULAR SERRATION
(BMTS) NOT PROVIDED
OVERALL LENGTH
(ABHP) 0.300 INCHES NOMINAL
MATERIAL
(MATT) COPPER ALLOY
SETSCREW NOTCH
(BMTT) NOT PROVIDED
SHOULDER LENGTH
(AATX) 0.050 INCHES NOMINAL
SHOULDER DIAMETER
(AATN) 2.700 INCHES NOMINAL
STYLE DESIGNATOR
(STYL) SHOULDERED
WIDTH
(ABGL) 0.060 INCHES NOMINAL
SURFACE TREATMENT
(SURF) BLACKENED
UNABLE TO DECODE
(SURF) UNABLE TO DECODE
MATERIAL
(MATL) BRASS
III END ITEM IDENTIFICATION
(AGAV) TELESCOPE MK74

Manufacturer Part Numbers


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