Model: 206255-001

Optical Instrument Focusing Ring

Properties:

Thread Class
3a
Thread Pitch Diameters
+0.0819 to 0.0860 inches
Thread Direction
Right-hand
Thread Length
0.180 inches
Outside Diameter
0.888 inches
Thread Size
55/64-56
End Application
All coast guard aircraft
Screw Thread Series Designator
Unf
Mounting Configuration
Four hollow screws (mrc) abuj size 1.205 in. Apart screwed into housing
Thread Location
External
Internal Flange Thickness
1.240 inches
Material
Aluminum
NSN
5855-01-456-2340
Part Number
206255-001
Description
Focusing Ring,optical Instrument
CAGE
55311

A cylindrical item specially designed to manually adjust the focus on an optical instrument. It may have an internal thread mounting method or machined for a press-fit. It usually has a knurled periphery.

Part 206255-001 NSN 5855-01-456-2340

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
45552
FIIG:
T271-J
Concept No.:
App. Key:
JC
Cond. Code:
1
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:
A
ESD:
A
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 9014900000
  • SITC: 87412
  • End Use: Marine engines, parts
  • NAICS: 334511
  • USDA: 1

Freight Class: Parts & accessories for direction finding compasses and other navigational instruments and appliances

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