PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

QS15EF61S6505-755141PC27Gear,spur

Naval Ship Systems Command · NSN 3020-00-273-1734 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-273-1734 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-273-1734. Primary manufacturer part number: QS15EF61S6505-755141PC27.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 0.4140 INCHES MINIMUM AND 0.4180 INCHES MAXIMUM IN
  • Body Style: PLAIN, SOLID
  • Hub Nominal Diameter: 0.313 INCHES FIRST END IN
  • Style Designator: PROTRUDING HUB
  • Teeth Quantity: 20
  • Mounting Hole Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END
  • Material: COPPER ALLOY OVERALL
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Copper Alloy Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-273-1734, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-273-1734
Primary Part NumberQS15EF61S6505-755141PC27
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Pitch Diameter0.4140 INCHES MINIMUM AND 0.4180 INCHES MAXIMUM IN
Body StylePLAIN, SOLID
Hub Nominal Diameter0.313 INCHES FIRST END IN
Style DesignatorPROTRUDING HUB
Teeth Quantity20
Mounting Hole Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END
MaterialCOPPER ALLOY OVERALL
Mounting Hole Type and Quantity2 THREADED TRANSVERSELY THROUGH HUB FIRST END
Attachment MethodMOUNTING HOLE
Nominal Distance Between Body Face and Protruding Hub End0.156 INCHES FIRST END IN
Bore Nominal Diameter0.125 INCHES BOTH ENDS IN
Nominal Outside Diameter0.457 INCHES IN
Mounting Hole Thread Quantity Per Inch40 TRANSVERSELY THROUGH HUB FIRST END
Face Nominal Width0.094 INCHES IN
Mounting Hole Nominal Thread Size0.1120 INCHES TRANSVERSELY THROUGH HUB FIRST END IN
Pressure Angle14.5000 DEGREES
Bore StylePLAIN BOTH ENDS
Hub Style DesignatorPLAIN FIRST END
Tooth FormSTANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3010-00-293-4819100PC26 INTERCHANGEABLE
Coupling Half,shaft
Wildfire Pacific Inc
5940-01-259-7771 INTERCHANGEABLE
Terminal Board
Cross-Reference Index
Part NumberManufacturer
QS15EF61S6505-755141PC27 PRIMARY Naval Ship Systems Command (USA)
CMC4S65-903PC27 Naval Ship Systems Command (USA)
AR5S65-53PC27 Naval Ship Systems Command (USA)
3-4FPC27 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
3-5PC27 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
AGC5S6505-465001PC27 Naval Ship Systems Command (USA)
11T2283LPC27 Naval Ship Systems Command (USA)
CA35S6505-586528PC27 Naval Ship Systems Command (USA)
DD692S6505-16PC27 Naval Ship Systems Command (USA)
3-1MPC27 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
3-4MPC27 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
DD445S6505-209PC27 Naval Ship Systems Command (USA)
2-1LPC27 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
3-2JPC27 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
3-2APC27 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
DD357S6505-465969PC27 Naval Ship Systems Command (USA)
33BB775LPC27 Naval Ship Systems Command (USA)
AG88S6505-848550PC27 Naval Ship Systems Command (USA)
BB61S65-966PC27 Naval Ship Systems Command (USA)
21DPC27 PRIMARY The Dewey Electronics Corporation Div Pitometer Log Division (USA)
Related Parts
3010-00-293-4819INTERCHANGEABLE
COUPLING HALF,SHAFT
100PC26
5940-01-259-7771INTERCHANGEABLE
TERMINAL BOARD

Frequently Asked Questions

What is NSN 3020-00-273-1734?

NSN 3020-00-273-1734 is a Gear,spur, manufactured by Naval Ship Systems Command, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-273-1734?

NSN 3020-00-273-1734 has 50 cross-referenced part numbers: QS15EF61S6505-755141PC27 (Naval Ship Systems Command), CMC4S65-903PC27 (Naval Ship Systems Command), AR5S65-53PC27 (Naval Ship Systems Command), 3-4FPC27 (The Dewey Electronics Corporation Div Pitometer Log Division), 3-5PC27 (The Dewey Electronics Corporation Div Pitometer Log Division) and 45 more.

What NSN replaces 3020-00-273-1734?

There are 2 known substitutes for 3020-00-273-1734: 3010-00-293-4819, 5940-01-259-7771. Verify interchangeability with system specifications before substitution.

What are the specifications of QS15EF61S6505-755141PC27?

Key specifications for QS15EF61S6505-755141PC27: Pitch Diameter: 0.4140 INCHES MINIMUM AND 0.4180 INCHES MAXIMUM IN; Body Style: PLAIN, SOLID; Hub Nominal Diameter: 0.313 INCHES FIRST END IN; Style Designator: PROTRUDING HUB. 19 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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