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Optical Element Retainer NSN 1240-00-115-4456

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 1240-00-115-4456 NSN: 1240-00-115-4456

Features and Characteristics

Shoulder Diameter
Between 1.948 inches and 1.953 inches
Shoulder Length
0.312 inches
Hole Diameter
Between 1.690 inches and 1.700 inches
Width
Between 0.060 inches and 0.070 inches
Overall Length
Between 0.678 inches and 0.698 inches
Hole Or Slot Quantity
2
Depth
Between 0.060 inches and 0.070 inches
Drive Type
Slotted
Drive Facility Angular Spacing In Deg
180.0
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Flange Thread Size
2.000 in.-32uns-2a
Special Features
Shoulder projecting from flange end, 1.771 in. Max. Shoulder dia. And 0.055 in. Min. Shoulder lg.
Material
Steel, qq-s-764, type 303, cond a-canceled or steel, qq-s-764, type 303se, cond a-canceled
Material
Steel comp 303 or steel comp 303se
Material Specification
Qq-s-764, type 303, cond a-canceled federal specification 1st material response and qq-s-764, type 303se, cond a-canceled federal specification 2nd material response
Surface Treatment
Oxide
Style Designator
Shouldered
Surface Treatment
Black oxide, mil-c-13924, class 4
Fsc Application Data
Telescope, elbow m118
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
001154456
NSN
1240001154456

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8615895
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 1240-00-115-4456
What are the manufacturers of nsn 1240001154456?
Does this nsn 1240001154456 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240001154456
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 1240001154456 contain any precious metals?
No precious metal content.
Does nsn 1240001154456 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240001154456?
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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