Product Details | OPTICAL ELEMENT RETAINER

1240-00-291-3570 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.20312400038Optical Sighting and Ranging Equipment58550055Night Vision Equipment, Emitted and Reflected Radiation66500063Optical Instruments, Test Equipment, Components and Accessories

Part Alternates: 7583446, 1240-00-291-3570, 00-291-3570, 1240002913570, 002913570

Fire Control Equipment | Optical Sighting and Ranging Equipment

Supply Group (FSG) NSN Assign. NIIN
12 09 SEP 1968 00-291-3570

Drawings & Photos | NSN 1240-00-291-3570


Cross Reference | NSN 1240-00-291-3570

Part Number Cage Code Manufacturer
7583446 19200 US ARMY ARDEC RDECOM

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Technical Data | NSN 1240-00-291-3570

Characteristic Specifications
STYLE DESIGNATOR F2 RECESSED
HOLE DIAMETER 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM
OVERALL LENGTH 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
RECESS DIAMETER 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
RECESS DEPTH 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
THREAD SIZE 0.648 IN.-48NS-3A
COUNTERBORE TAPER ANGLE IN DEG 60.0
MATERIAL ALUMINUM ALLOY, QQ-A-354, COND T-CANCELED
SURFACE TREATMENT ANODIZED, MIL-A-8625, TYPE 1, CLASS 2 OR ANODIZED, MIL-A-8625, TYPE 2, CLASS 2
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY 2
WIDTH 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM
DEPTH 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM
INTERNAL ANNULAR SERRATION NOT PROVIDED
SETSCREW NOTCH PROVIDED
III FSC APPLICATION DATA TELESCOPE,STRAIGHT M86F
MANUFACTURERS CODE 19200
DESIGN CONTROL REFERENCE 7583446

Restrictions/Controls & Freight Information | NSN 1240-00-291-3570

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
NMF Description 058110 OPTICAL GOODS OR INSTRUMENTS NOI
Less than car load rating D 200
Less than truck load rating D 200.0
Water commodity Code 744 unknown
Originating Activity Code BG RDECOM-ECBC-RI
Rock Island, IL 61299
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity M Medical supplies, equipment, samples records, etc.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable