PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G9-42Gear,spur

Roller Bearing Co of America, Inc Div Pic Design · NSN 3020-00-450-9373 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-450-9373 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-450-9373. Primary manufacturer part number: G9-42.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 0.6552 INCHES MINIMUM AND 0.6562 INCHES MAXIMUM IN
  • Pressure Angle: 20.0000 DEGREES
  • Style Designator: PROTRUDING HUB
  • Nominal Distance Between Body Face and Protruding Hub End: 0.187 INCHES FIRST END IN
  • Face Nominal Width: 0.125 INCHES IN
  • Surface Treatment Document and Classification: QQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Furnished Items and Quantity: 1 SETSCREW
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 3020-00-450-9373, 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 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-450-9373
Primary Part NumberG9-42
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
Pitch Diameter0.6552 INCHES MINIMUM AND 0.6562 INCHES MAXIMUM IN
Pressure Angle20.0000 DEGREES
Style DesignatorPROTRUDING HUB
Nominal Distance Between Body Face and Protruding Hub End0.187 INCHES FIRST END IN
Face Nominal Width0.125 INCHES IN
Surface Treatment Document and ClassificationQQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Furnished Items and Quantity1 SETSCREW
Bore StylePLAIN BOTH ENDS
Bore Nominal Diameter0.125 INCHES BOTH ENDS IN
Surface TreatmentPASSIVATE OVERALL
Precision ClassificationQUALITY NUMBER 10
MaterialSTEEL COMP 303 OVERALL
Nominal Outside Diameter0.687 INCHES IN
Hub Nominal Diameter0.312 INCHES FIRST END IN
Tooth FormSTANDARD
Material Document and ClassificationQQ-S-764,TYPE 303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Hub Style DesignatorPINNED FIRST END
Body StylePLAIN, SOLID
Teeth Quantity42
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2815-01-085-26183006456 INTERCHANGEABLE
Guide,valve Stem
Cummins Inc.
6640-01-125-3765 INTERCHANGEABLE
Hot Plate,electric
9330-01-186-9984B-2242 INTERCHANGEABLE
Window,observation
Circor Naval Solutions Llc Dba Warren Pumps
5930-01-236-8155 INTERCHANGEABLE
Switch,push
5220-01-591-5963G942 INTERCHANGEABLE
Gage,crimping Tool
Daniels Manufacturing Corporation
Cross-Reference Index
Part NumberManufacturer
G9-42 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
DG9T42 Allied Devices Corp Dba Absolute Precision Co (USA)
363-451-9517 PRIMARY Honeywell International Inc. Div Aerospace - Torrance (USA)
B22-42 Designatronics Incorporated Div Sterling Instruments Div (USA)
GP28-42P1 PRIMARY Secs Inc (USA)
D44S42 PRIMARY Designatronics Inc Perfect Gear and Instrument Div (USA)
Related Parts
2815-01-085-2618INTERCHANGEABLE
GUIDE,VALVE STEM
3006456
6640-01-125-3765INTERCHANGEABLE
HOT PLATE,ELECTRIC
9330-01-186-9984INTERCHANGEABLE
WINDOW,OBSERVATION
B-2242
5930-01-236-8155INTERCHANGEABLE
SWITCH,PUSH
5220-01-591-5963INTERCHANGEABLE
GAGE,CRIMPING TOOL
G942

Frequently Asked Questions

What is NSN 3020-00-450-9373?

NSN 3020-00-450-9373 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 3020-00-450-9373?

NSN 3020-00-450-9373 has 6 cross-referenced part numbers: G9-42 (Roller Bearing Co of America, Inc Div Pic Design), DG9T42 (Allied Devices Corp Dba Absolute Precision Co), 363-451-9517 (Honeywell International Inc. Div Aerospace - Torrance), B22-42 (Designatronics Incorporated Div Sterling Instruments Div), GP28-42P1 (Secs Inc) and 1 more.

What NSN replaces 3020-00-450-9373?

There are 5 known substitutes for 3020-00-450-9373: 2815-01-085-2618, 6640-01-125-3765, 9330-01-186-9984 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G9-42?

Key specifications for G9-42: Pitch Diameter: 0.6552 INCHES MINIMUM AND 0.6562 INCHES MAXIMUM IN; Pressure Angle: 20.0000 DEGREES; Style Designator: PROTRUDING HUB; Nominal Distance Between Body Face and Protruding Hub End: 0.187 INCHES FIRST END IN. 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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