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Optical Instrument Cell Assembly NSN 1240-00-257-2759

Item Description

An item consisting of a cell, optical element in which is secured one or more optical elements, such as lenses, reticles, filters, windows, and the like. May include retaining rings, spacers, and/or separators. For items with focusing facilities and/or a diopter scale, see eyepiece assembly, optical instrument.

NSN 1240-00-257-2759 NSN: 1240-00-257-2759

Features and Characteristics

Thread Class
2b
Thread Direction
Right-hand
Thread Length
0.138 inches
Overall Length
Between 0.430 inches and 0.440 inches
Thread Size
2.000-32
Overall Diameter
Between 2.297 inches and 2.312 inches
Screw Thread Series Designator
Uns
Accessory Components And Quantity
Retainer, optical element 1, spacer, ring 1, light source, potted 1
Thread Location
Internal
Eccentric Construction
Not provided
Cell Controlling Agency
Frankford arsenal
Cell Identifying Number
11730296 part no.
Optical Element Quantity
1
Optical Element Type
Reticle
Optical Element Controlling Agency
Frankford arsenal
Optical Element Identifying Number
11730297 part no.
Criticality Code Justification
Feat
Special Features
Radioactive material radionuclides data tritium, h3 as gas, 1.400 curies max.; flange 2.812in. Diameter w/2 flat sides on unthreaded end, 2.310in. Wideacross flats, two curved slots 0.219in. O/a lg, 0.141in. O/a w, spaced 180 degrees apart, and four 0.112-40unc-2b threaded holes on 1.800in. Vertical and horizontal centers located on flange
Material
Aluminum alloy, qq-a-200/3 or aluminum alloy, qq-a-225/6, alloy 2024, t4 or aluminum alloy, qq-a-200/8 or aluminum alloy, qq-a-225/8, alloy 6061, t6
Material
Aluminum alloy 2024 or aluminum alloy 2024 or aluminum alloy 6061 or aluminum alloy 6062 or aluminum alloy 6061
Material Specification
Qq-a-200/3 federal specification 1st material response and qq-a-225/6, alloy 2024, t4 federal specification 2nd material response and qq-a-200/8 federal specification 3rd material response and qq-a-225/8, alloy 6061, t6 federal specification 4th material response
Fsc Application Data
Telescope, elbow
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
002572759
NSN
1240002572759

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
11730292
Cage Code:
19200
Status:
A
MSDS:
ZZVDV

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 1240-00-257-2759
What are the manufacturers of nsn 1240002572759?
Does this nsn 1240002572759 have a shelf life?
Yes. 48 mo. after cure date.
What is the formal definition of nsn 1240002572759
An item consisting of a cell, optical element in which is secured one or more optical elements, such as lenses, reticles, filters, windows, and the like. may include retaining rings, spacers, and/or separators. for items with focusing facilities and/or a diopter scale, see eyepiece assembly, optical instrument.
Does nsn 1240002572759 contain any precious metals?
No precious metal content.
Does nsn 1240002572759 contain any hazardous materials?
Hazardous material. MSDS available in HMIRS.
What is the ESD classification of nsn 1240002572759?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22197
FIIG:
T271-J
App. Key:
JA
Cond. Code:
2
Status:
A

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