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Optical Element Retainer NSN 1240-01-239-2396

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 1240-01-239-2396 NSN: 1240-01-239-2396

Features and Characteristics

Shoulder Length
0.200 inches
Hole Diameter
3.170 inches
Width
0.060 inches
Overall Length
0.570 inches
Hole Or Slot Quantity
4
Depth
0.150 inches
End Application
An/vsg-2 (a) ope, an/vsg-2, m60a3tts
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
Flange Thread Size
3.500in.-28
Shoulder Thread Size
3.380in.-28
Material
Aluminum alloy, qq-a-200/8, 6061, t6
Material
Aluminum alloy 6061
Material Specification
Qq-a-200/8, 6061, t6 federal specification single material response
Style Designator
Shouldered
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
012392396
NSN
1240012392396

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
SM-C-805055
Cage Code:
80063
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 1240-01-239-2396
What are the manufacturers of nsn 1240012392396?
Does this nsn 1240012392396 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240012392396
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 1240012392396 contain any precious metals?
No precious metal content.
Does nsn 1240012392396 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240012392396?
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
  •   Quality Fast Service
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