PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Q1-12Gear,worm Wheel

Roller Bearing Co of America, Inc Div Pic Design · NSN 3020-00-866-5490 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-866-5490 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-866-5490. Primary manufacturer part number: Q1-12.
Features
  • Gear,worm Wheel — FSC 3020
  • Body Style: PLAIN, SOLID
  • Tooth Direction: RIGHT
  • Hub Nominal Diameter: 0.500 INCHES FIRST END IN
  • Mounting Hole Nominal Thread Size: 0.138 INCHES TRANSVERSELY THROUGH HUB FIRST END IN
  • Hub Style Designator: PLAIN FIRST END
  • Style Designator: PROTRUDING HUB
  • Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Copper Alloy Overall construction
General Description

The Gear,worm Wheel, cataloged under National Stock Number 3020-00-866-5490, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 21 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-866-5490
Primary Part NumberQ1-12
Item NameGear,worm Wheel
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusCANCELLED
Body StylePLAIN, SOLID
Tooth DirectionRIGHT
Hub Nominal Diameter0.500 INCHES FIRST END IN
Mounting Hole Nominal Thread Size0.138 INCHES TRANSVERSELY THROUGH HUB FIRST END IN
Hub Style DesignatorPLAIN FIRST END
Style DesignatorPROTRUDING HUB
Bore Nominal Diameter0.250 INCHES BOTH ENDS IN
Throat Nominal Radius0.234 INCHES IN
Bore StylePLAIN BOTH ENDS
Material Document and ClassificationMIL-B-994 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Mounting Hole Type and Quantity1 THREADED TRANSVERSELY THROUGH HUB FIRST END
Pressure Angle14.5000 DEGREES
Teeth Quantity120
MaterialCOPPER ALLOY OVERALL
Face Nominal Width0.180 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End0.220 INCHES FIRST END IN
Nominal Outside Diameter1.921 INCHES IN
Mounting Hole Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END
Pitch Diameter1.8750 INCHES NOMINAL IN
Face TypeCONCAVE
Attachment MethodMOUNTING HOLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5325-00-598-1138 INTERCHANGEABLE
Ring,retaining
5310-00-710-8107R863 PIECE 33 INTERCHANGEABLE
Nut,plain,round
Circor Naval Solutions Llc Dba Warren Pumps
Cross-Reference Index
Part NumberManufacturer
Q1-12 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
Related Parts
5325-00-598-1138INTERCHANGEABLE
RING,RETAINING
5310-00-710-8107INTERCHANGEABLE
NUT,PLAIN,ROUND
R863 PIECE 33

Frequently Asked Questions

What is NSN 3020-00-866-5490?

NSN 3020-00-866-5490 is a Gear,worm Wheel, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-866-5490?

NSN 3020-00-866-5490 has 1 cross-referenced part number: Q1-12 (Roller Bearing Co of America, Inc Div Pic Design).

What NSN replaces 3020-00-866-5490?

There are 2 known substitutes for 3020-00-866-5490: 5325-00-598-1138, 5310-00-710-8107. Verify interchangeability with system specifications before substitution.

What are the specifications of Q1-12?

Key specifications for Q1-12: Body Style: PLAIN, SOLID; Tooth Direction: RIGHT; Hub Nominal Diameter: 0.500 INCHES FIRST END IN; Mounting Hole Nominal Thread Size: 0.138 INCHES TRANSVERSELY THROUGH HUB FIRST END IN. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-866-5490 still in active supply?

NSN 3020-00-866-5490 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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