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Optical Element Retainer NSN 1240-00-157-9642

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 1240-00-157-9642 NSN: 1240-00-157-9642

Features and Characteristics

Hole Diameter
1.718 inches
Overall Length
0.309 inches
Recess Diameter
1.772 inches
Recess Depth
0.195 inches
Thread Size
2.000 in.-32
End Application
Gun sight mk15
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
1.820 inches
Material
Brass
Material
Copper alloy
Surface Treatment
Fnaaf0
Style Designator
Recessed
Surface Treatment
Black dip
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
001579642
NSN
1240001579642

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
481130PC1
Cage Code:
10001
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 1240-00-157-9642
What are the manufacturers of nsn 1240001579642?
Does this nsn 1240001579642 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240001579642
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 1240001579642 contain any precious metals?
No precious metal content.
Does nsn 1240001579642 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240001579642?
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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