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Optical Element Retainer NSN 1240-00-620-3759

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 1240-00-620-3759 NSN: 1240-00-620-3759

Features and Characteristics

Hole Diameter
Between 0.741 inches and 0.746 inches
Overall Length
0.750 inches
Recess Diameter
Between 0.800 inches and 0.805 inches
Recess Depth
0.661 inches
Thread Size
1.062 in.-32ns-2
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
0.865 inches
Special Features
External threaded, raised portion only 0.375 in. Of length
Material
Aluminum alloy, qq-a-225/6, alloy 2024, t4
Material
Aluminum alloy 2024
Style Designator
Recessed
Surface Treatment
Anodized, mil-a-8625, type 2, class 2
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
006203759
NSN
1240006203759

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8200224
Cage Code:
19200
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 1240-00-620-3759
What are the manufacturers of nsn 1240006203759?
Does this nsn 1240006203759 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240006203759
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 1240006203759 contain any precious metals?
No precious metal content.
Does nsn 1240006203759 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240006203759?
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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