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Optical Element Retaining Ring NSN 1240-01-268-4714

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 1240-01-268-4714 NSN: 1240-01-268-4714

Features and Characteristics

Thread Class
3b
Thread Pitch Diameters
+0.8724/+0.9062 inches
Thread Direction
Right-hand
Thread Length
0.400 inches
Outside Diameter
1.125 inches
Thread Size
0.906-32
Aperture Diameter
0.906 inches
Screw Thread Series Designator
Uns
Thread Location
Internal
Internal Flange Thickness
0.020 inches
Knurled Periphery
Not provided
Material
Brass
Material
Copper alloy
Surface Treatment
Black oxide, mil-f-495
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
012684714
NSN
1240012684714

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
3183247
Cage Code:
10001
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 1240-01-268-4714
What are the manufacturers of nsn 1240012684714?
Does this nsn 1240012684714 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240012684714
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 1240012684714 contain any precious metals?
No precious metal content.
Does nsn 1240012684714 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240012684714?
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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