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Optical Element Retainer NSN 1240-01-131-5320

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 1240-01-131-5320 NSN: 1240-01-131-5320

Features and Characteristics

Shoulder Length
Between 0.300 inches and 0.310 inches
Hole Diameter
Between 1.500 inches and 1.510 inches
Overall Length
Between 0.350 inches and 0.360 inches
Flange Diameter
2.000 inches
Hole Or Slot Quantity
1
Diameter
0.078 inches
Depth
0.360 inches
Drive Type
Drilled hole
Radius From Geometric Axis To Hole Center
0.834 inches
Guide Design
Thread relief
Guide Location
Shoulder
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Shoulder Thread Size
1.B75in-32 uns-2a
Material
Aluminum alloy, qq-a-225/3, alloy 2011, t3 and aluminum alloy, qq-a-225/6, alloy 2024, t351 and aluminum alloy, qq-a-225/8, t651
Material
Aluminum alloy 2011 and aluminum alloy 2024 and aluminum alloy 6061
Style Designator
Shouldered
Surface Treatment
Anodized, mil-a-8625, type 2, class 2
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
011315320
NSN
1240011315320

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
12309689
Cage Code:
19207
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 1240-01-131-5320
What are the manufacturers of nsn 1240011315320?
Does this nsn 1240011315320 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240011315320
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 1240011315320 contain any precious metals?
No precious metal content.
Does nsn 1240011315320 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240011315320?
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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