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Optical Element Retainer NSN 1240-00-916-0285

Item Description

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.

NSN 1240-00-916-0285 NSN: 1240-00-916-0285

Features and Characteristics

Hole Diameter
4.280 inches
Width
0.070 inches
Overall Length
0.195 inches
Hole Or Slot Quantity
4
Recess Diameter
Between 4.100 inches and 4.120 inches
Recess Depth
0.180 inches
Thread Size
4.375 in.-32 uns-2b
Depth
0.035 inches
Drive Type
Slotted
Drive Facility Angular Spacing In Deg
90.0
Guide Design
Thread chamfer
Guide Location
Edge opposite drive edge
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Hole Chamfer Angle In Deg
45.0
Hole Chamfer Diameter
Between 4.220 inches and 4.240 inches
Material
Aluminum alloy, ww-t-700/6, alloy 6061, t6, type 1
Material
Alloy, ww-t-700/6, alloy6061, t6, type1
Style Designator
Recessed
Surface Treatment
Anodized black
Fsc Application Data
Aircraft gunnery fire control system
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
009160285
NSN
1240009160285

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
701C983P1
Cage Code:
89954
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 9803200000
  • NAICS: 990000
  • SITC: 93100
  • Description: Military equipments not identified by kind
  • End Use (Code 50060):
    Military apparel and footwear

Q & A

Frequently asked questions for NSN 1240-00-916-0285
What are the manufacturers of nsn 1240009160285?
Does this nsn 1240009160285 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240009160285
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.
Does nsn 1240009160285 contain any precious metals?
No precious metal content.
Does nsn 1240009160285 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240009160285?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22451
FIIG:
T271-K
App. Key:
KA
Cond. Code:
2
Status:
A

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  •   Certificate of Conformance
  •   Quality Inspected Parts
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