Model: 2493663

Optical Element Retaining Ring

Properties:

Outside Diameter
3.250 inches
Aperture Diameter
2.812 inches
Mounting Configuration
Threaded on outside diameter with 48ns-2a thd
Thread Location
External
Internal Flange Thickness
0.156 inches
Knurled Periphery
Not provided
Material
Aluminum alloy
Material
Aluminum alloy
Surface Treatment
Anodized, mil-a-8625, type 2
Fsc Application Data
Radio and television communications equipment, non-airborne
NSN
6650-00-789-8178
Part Number
2493663
Description
Ring,retaining,optical Element
CAGE
53711

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.

Part 2493663 NSN 6650-00-789-8178

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22585
FIIG:
T271-J
Concept No.:
App. Key:
JC
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
058110
UFC:
33110
LTL:
200.0
LCL:
--
WCC:
723
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9018500000
  • SITC: 87225
  • End Use: Medicinal equipment
  • NAICS: 339115
  • USDA: 1

Freight Class: Other ophthalmic instruments and appliances and parts and accessories

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