PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G5-21Gear,spur

Roller Bearing Co of America, Inc Div Pic Design · NSN 3020-00-921-3332 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-921-3332 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-921-3332. Primary manufacturer part number: G5-21.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 0.4375 INCHES NOMINAL IN
  • Body Style: PLAIN, SOLID
  • Material: STEEL COMP 303 OVERALL
  • Pressure Angle: 20.0000 DEGREES
  • Backlash Designation: GRADE C
  • Hub Style Designator: PINNED FIRST END
  • Bore Nominal Diameter: 0.187 INCHES BOTH ENDS IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-921-3332, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-921-3332
Primary Part NumberG5-21
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
Pitch Diameter0.4375 INCHES NOMINAL IN
Body StylePLAIN, SOLID
MaterialSTEEL COMP 303 OVERALL
Pressure Angle20.0000 DEGREES
Backlash DesignationGRADE C
Hub Style DesignatorPINNED FIRST END
Bore Nominal Diameter0.187 INCHES BOTH ENDS IN
Teeth Quantity21
Bore StylePLAIN BOTH ENDS
Nominal Distance Between Body Face and Protruding Hub End0.219 INCHES FIRST END IN
Surface TreatmentPASSIVATE OVERALL
Face Nominal Width0.187 INCHES IN
Furnished Items and Quantity1 SETSCREW
Material Document and ClassificationQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Tooth FormSTANDARD
Precision ClassificationQUALITY NUMBER 10
Nominal Outside Diameter0.491 INCHES IN
Hub Nominal Diameter0.375 INCHES FIRST END IN
Style DesignatorPROTRUDING HUB
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3455-00-266-9449 INTERCHANGEABLE
File,rotary
5935-01-088-077133523-2 INTERCHANGEABLE
Dummy Connector,receptacle
Microwave Devices Inc
6680-01-107-8279G52-1 INTERCHANGEABLE
Indicator,sight,liquid
Ldi Industries, Inc. Dba Ldi Industries Inc
Cross-Reference Index
Part NumberManufacturer
G5-21 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
335-232 Raytheon Company Dba Raytheon Co (USA)
Related Parts
3455-00-266-9449INTERCHANGEABLE
FILE,ROTARY
5935-01-088-0771INTERCHANGEABLE
DUMMY CONNECTOR,RECEPTACLE
33523-2
6680-01-107-8279INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
G52-1

Frequently Asked Questions

What is NSN 3020-00-921-3332?

NSN 3020-00-921-3332 is a Gear,spur, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-921-3332?

NSN 3020-00-921-3332 has 2 cross-referenced part numbers: G5-21 (Roller Bearing Co of America, Inc Div Pic Design), 335-232 (Raytheon Company Dba Raytheon Co).

What NSN replaces 3020-00-921-3332?

There are 3 known substitutes for 3020-00-921-3332: 3455-00-266-9449, 5935-01-088-0771, 6680-01-107-8279. Verify interchangeability with system specifications before substitution.

What are the specifications of G5-21?

Key specifications for G5-21: Pitch Diameter: 0.4375 INCHES NOMINAL IN; Body Style: PLAIN, SOLID; Material: STEEL COMP 303 OVERALL; Pressure Angle: 20.0000 DEGREES. 20 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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