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Optical Element Retainer NSN 1240-00-121-0797

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 1240-00-121-0797 NSN: 1240-00-121-0797

Features and Characteristics

Hole Diameter
Between 1.450 inches and 1.460 inches
Width
Between 0.062 inches and 0.078 inches
Overall Length
Between 0.090 inches and 0.100 inches
Hole Or Slot Quantity
2
Recess Angle In Deg
90.0
Recess Depth
0.070 inches
Thread Size
1.688 in.-32uns-2a
Depth
Between 0.030 inches and 0.040 inches
Drive Type
Slotted
Drive Facility Angular Spacing In Deg
180.0
Guide Design
Thread chamfer
Guide Location
Both edges
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Material
Aluminum alloy, ww-t-700/3 or aluminum alloy, mil-c-11866, comp 3, t6 or aluminum alloy, qq-a-225/6 or aluminum alloy, qq-a-200/8 or aluminum alloy, qq-a-225/8 or aluminum alloy, qq-a-250/11, t6
Material
Aluminum alloy 2024 or aluminum alloy, mil-c-11866, comp 3, t6 or aluminum alloy 2024 or aluminum alloy 6061 or aluminum alloy 6062 or aluminum alloy 6061 or aluminum alloy 6061
Material Specification
Ww-t-700/3 federal specification 1st material response and qq-a-225/6 federal specification 3rd material response and qq-a-200/8 federal specification 4th material response and qq-a-225/8 federal specification 5th material response and qq-a-250/11, t6 federal specification 6th material response
Surface Treatment
Anodize
Style Designator
Recessed
Surface Treatment
Anodized, mil-a-8625, type 2, class 2
Fsc Application Data
Periscope, tank m32, m32c
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
001210797
NSN
1240001210797

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8289250
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 1240-00-121-0797
What are the manufacturers of nsn 1240001210797?
Does this nsn 1240001210797 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240001210797
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 1240001210797 contain any precious metals?
No precious metal content.
Does nsn 1240001210797 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240001210797?
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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