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Worldwide distributor of NSN parts and consumables located in the USA.

Optical Instrument Focusing Ring

Model / MPN: 143C0003 | NSN: 5855-01-503-6171
ITAR Registered seal

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.

Product Details
NATO Stock Number
5855-01-503-6171
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Thread Class
2b
Thread Pitch Diameters
+3.1389/+3.1459 inches
Outside Diameter
3.270 inches
Thread Size
3.1750-18
End Application
An/pvs-20; night vision sight, crew served
Screw Thread Series Designator
Uns
Drive Type
Knurl
Thread Location
Internal
Part Name Assigned By Controlling Agency
Ring, objective focus
143C Series Parts

Pricing and Availability

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143C0003 Cross Reference
  • 143C003
  • 143C0003