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Optical Element Retainer NSN 1240-00-829-7374

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 1240-00-829-7374 NSN: 1240-00-829-7374

Features and Characteristics

Shoulder Diameter
0.560 inches
Shoulder Length
0.141 inches
Tapered Hole Minor Diameter
Between 0.480 inches and 0.490 inches
Taper Angle In Deg
10.0
Width
0.047 inches
Overall Length
0.281 inches
Hole Or Slot Quantity
2
Depth
0.062 inches
Drive Type
Slotted
Drive Facility Angular Spacing In Deg
180.0
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Flange Thread Size
0.688 in.-32 un-2a
Material
Aluminum alloy, qq-a-225/6, t351
Material
Aluminum alloy 2024
Material Specification
Qq-a-225/6, t351 federal specification single material response
Surface Treatment
Anodize
Style Designator
Shouldered
Surface Treatment
Anodized black
Fsc Application Data
Periscope xm44
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
008297374
NSN
1240008297374

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
10542159
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 1240-00-829-7374
What are the manufacturers of nsn 1240008297374?
Does this nsn 1240008297374 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240008297374
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 1240008297374 contain any precious metals?
No precious metal content.
Does nsn 1240008297374 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240008297374?
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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