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Optical Element Retainer NSN 1240-01-320-1003

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 1240-01-320-1003 NSN: 1240-01-320-1003

Features and Characteristics

Hole Diameter
Between 0.974 inches and 1.004 inches
Width
0.040 inches
Overall Length
Between 0.145 inches and 0.155 inches
Hole Or Slot Quantity
4
Recess Diameter
Between 0.974 inches and 1.004 inches
Recess Depth
0.130 inches
Thread Size
1.125 in.-40
End Application
Optical improvement program for target acquisition designation sight
Drive Type
Slotted
Guide Design
Thread chamfer
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Hole Chamfer Angle In Deg
30.0
Hole Chamfer Diameter
Between 1.029 inches and 1.033 inches
Material
Aluminum alloy, qq-a-225/8, alloy 6061, t6
Material
Aluminum alloy 6061
Style Designator
Recessed
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
013201003
NSN
1240013201003

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
13077163-501
Cage Code:
04939
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 1240-01-320-1003
What are the manufacturers of nsn 1240013201003?
Does this nsn 1240013201003 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240013201003
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 1240013201003 contain any precious metals?
No precious metal content.
Does nsn 1240013201003 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240013201003?
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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