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Optical Element Retainer NSN 1240-01-078-8280

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 1240-01-078-8280 NSN: 1240-01-078-8280

Features and Characteristics

Hole Diameter
Between 0.060 inches and 0.070 inches
Overall Length
Between 0.477 inches and 0.487 inches
Recess Diameter
Between 3.060 inches and 3.070 inches
Recess Depth
Between 0.053 inches and 0.063 inches
Thread Size
B3.000 in.-32
Guide Design
Thread relief
Guide Location
Both edges
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Hole Chamfer Angle In Deg
45.0
Hole Chamfer Diameter
Between 3.245 inches and 3.255 inches
Material
Aluminum alloy, qq-a-225/8, t651 or aluminum alloy, qq-a-200/8, 6061, t6
Material
Aluminum alloy 6061 or aluminum alloy 6061
Style Designator
Recessed
Surface Treatment
Anodized, mil-a-8625, type 2
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
010788280
NSN
1240010788280

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
12266634
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 1240-01-078-8280
What are the manufacturers of nsn 1240010788280?
Does this nsn 1240010788280 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240010788280
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 1240010788280 contain any precious metals?
No precious metal content.
Does nsn 1240010788280 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240010788280?
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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