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Optical Element Retaining Ring NSN 1240-00-328-5606

Item Description

A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see retainer, optical element. Excludes cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.

NSN 1240-00-328-5606 NSN: 1240-00-328-5606

Features and Characteristics

Groove Diameter
3.130 inches
Outside Diameter
3.250 inches
Aperture Diameter
2.900 inches
Inner Groove Width
0.140 inches
Mounting Configuration
3 threaded holes equally spaced 120 degrees apart around outside dia; 0.138-32unc-2b
Internal Flange Thickness
0.310 inches
Groove Location
Adjacent to internal flange
Knurled Periphery
Not provided
Material
Aluminum alloy, ww-t-700/3, t3 or aluminum alloy, ww-t-700/6, t6 or aluminum alloy, qq-a-200/3, t4 or aluminum alloy, qq-a-200/8, 6061, t6 or aluminum alloy, qq-a-225/6, t4 or aluminum alloy, qq-a-225/8, alloy 6061, t6 or aluminum alloy, qq-a-250/4, t4 or aluminum alloy, qq-a-250/11, t6
Material
Aluminum alloy 2024 or aluminum alloy 6061 or aluminum alloy 2024 or aluminum alloy 6061 or aluminum alloy 2024 or aluminum alloy 6061 or aluminum alloy 2024 or aluminum alloy 6061
Material Specification
Ww-t-700/3, t3 federal specification 1st material response and ww-t-700/6, t6 federal specification 2nd material response and qq-a-200/3, t4 federal specification 3rd material response and qq-a-200/8, 6061, t6 federal specification 4th material response and qq-a-225/6, t4 federal specification 5th material response and qq-a-225/8, alloy 6061, t6 federal specification 6th material response and qq-a-250/4, t4 federal specification 7th material response and qq-a-250/11, t6 federal specification 8th material response
Surface Treatment
Dull black
Fsc Application Data
Collimator
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
003285606
NSN
1240003285606

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
10558952
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 1240-00-328-5606
What are the manufacturers of nsn 1240003285606?
Does this nsn 1240003285606 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240003285606
A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. it may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. for externally threaded items, see retainer, optical element. excludes cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.
Does nsn 1240003285606 contain any precious metals?
Precious metal content is unknown.
Does nsn 1240003285606 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240003285606?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22585
FIIG:
T271-J
App. Key:
JC
Cond. Code:
2
Status:
A

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  •   Certificate of Conformance
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