PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3491056Ring,retaining,optical Element

Raytheon Company Dba Raytheon · NSN 6650-01-148-1547 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-01-148-1547 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-148-1547. Primary manufacturer part number: 3491056.
Features
  • Ring,retaining,optical Element — FSC 6650
  • Thread Pitch Diameters: +3.1797 TO 3.1855 INCHES IN
  • Outside Diameter: 3.415 INCHES MINIMUM AND 3.420 INCHES MAXIMUM IN
  • Screw Thread Series Designator: UNS
  • Thread Location: INTERNAL
  • Material: STEEL
  • Thread Direction: RIGHT-HAND
  • Thread Length: 0.125 INCHES IN
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining,optical Element, cataloged under National Stock Number 6650-01-148-1547, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6650-01-148-1547
Primary Part Number3491056
Item NameRing,retaining,optical Element
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Thread Pitch Diameters+3.1797 TO 3.1855 INCHES IN
Outside Diameter3.415 INCHES MINIMUM AND 3.420 INCHES MAXIMUM IN
Screw Thread Series DesignatorUNS
Thread LocationINTERNAL
MaterialSTEEL
Thread DirectionRIGHT-HAND
Thread Length0.125 INCHES IN
Thread Size3.200-32
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-530-9761 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
3491056 PRIMARY Raytheon Company Dba Raytheon (USA)
Related Parts
5305-00-530-9761INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 6650-01-148-1547?

NSN 6650-01-148-1547 is a Ring,retaining,optical Element, manufactured by Raytheon Company Dba Raytheon, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-01-148-1547?

NSN 6650-01-148-1547 has 1 cross-referenced part number: 3491056 (Raytheon Company Dba Raytheon).

What NSN replaces 6650-01-148-1547?

There is 1 known substitute for 6650-01-148-1547: 5305-00-530-9761. Verify interchangeability with system specifications before substitution.

What are the specifications of 3491056?

Key specifications for 3491056: Thread Pitch Diameters: +3.1797 TO 3.1855 INCHES IN; Outside Diameter: 3.415 INCHES MINIMUM AND 3.420 INCHES MAXIMUM IN; Screw Thread Series Designator: UNS; Thread Location: INTERNAL. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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