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Optical Element Retaining Ring NSN 1240-01-078-8279

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 1240-01-078-8279 NSN: 1240-01-078-8279

Features and Characteristics

Thread Class
2a
Thread Pitch Diameters
+4.7555/+4.7902 inches
Thread Direction
Right-hand
Thread Length
4.812 inches
Thread Size
4.812-32
Screw Thread Series Designator
Uns
Thread Location
Internal
Internal Flange Thickness
Between 0.190 inches and 0.210 inches
Material
Aluminum alloy
Material
Aluminum alloy
Surface Treatment
Anodized, mil-a-8625, type 2
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
010788279
NSN
1240010788279

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
12266763
Cage Code:
19207
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 1240-01-078-8279
What are the manufacturers of nsn 1240010788279?
Does this nsn 1240010788279 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240010788279
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 1240010788279 contain any precious metals?
No precious metal content.
Does nsn 1240010788279 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240010788279?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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