Product Details | OPTICAL ELEMENT RETAINER

1240-00-389-3557 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: 233057PC9, 1240-00-389-3557, 00-389-3557, 1240003893557, 003893557

Fire Control Equipment | Optical Sighting and Ranging Equipment

Supply Group (FSG) NSN Assign. NIIN
12 01 JAN 1963 00-389-3557

Drawings & Photos | NSN 1240-00-389-3557


Cross Reference | NSN 1240-00-389-3557

Part Number Cage Code Manufacturer
233057PC9 10001 NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT

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Technical Data | NSN 1240-00-389-3557

Characteristic Specifications
STYLE DESIGNATOR F5 SHOULDERED
SHOULDER DIAMETER 1.450 INCHES NOMINAL
SHOULDER LENGTH 0.050 INCHES NOMINAL
TAPERED HOLE MINOR DIAMETER 1.333 INCHES NOMINAL
TAPER ANGLE IN DEG 2.6
OVERALL LENGTH 0.250 INCHES NOMINAL
FLANGE THREAD SIZE 1.500 IN.-32
MATERIAL BRASS
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY 2
WIDTH 0.060 INCHES NOMINAL
DEPTH 0.050 INCHES NOMINAL
DRIVE FACILITY ANGULAR SPACING IN DEG 180.0
INTERNAL ANNULAR SERRATION NOT PROVIDED
GUIDE DESIGN THREAD CHAMFER
GUIDE LOCATION BOTH EDGES
SETSCREW NOTCH NOT PROVIDED
III END ITEM IDENTIFICATION TELESCOPE MK74

Restrictions/Controls & Freight Information | NSN 1240-00-389-3557

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
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
Less than truck load rating D 200.0
Water commodity Code 744 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity 2 Arms/Weapons (all types including Inert Component Parts). When a 2 is indicated in the first position, then the special handling code must be determined from table 85 , part 1.
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

Management | NSN 1240-00-389-3557

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each