PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SCB69391Gear,helical

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 3020-00-203-1519 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-203-1519 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-203-1519. Primary manufacturer part number: SCB69391.
Features
  • Gear,helical — FSC 3020
  • Face Nominal Width: 0.188 INCHES IN
  • Body Style: WEBBED, OFFSET, SOLID
  • Material Document and Classification: QQ-B-671,CLASS 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Style Designator: PROTRUDING HUB, RECESSED BODY
  • Tooth Form: STANDARD
  • Hub Nominal Diameter: 0.500 INCHES FIRST END IN
  • 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,helical, cataloged under National Stock Number 3020-00-203-1519, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. 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
NSN3020-00-203-1519
Primary Part NumberSCB69391
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusACTIVE
Face Nominal Width0.188 INCHES IN
Body StyleWEBBED, OFFSET, SOLID
Material Document and ClassificationQQ-B-671,CLASS 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorPROTRUDING HUB, RECESSED BODY
Tooth FormSTANDARD
Hub Nominal Diameter0.500 INCHES FIRST END IN
MaterialCOPPER ALLOY OVERALL
Body Recess Nominal Depth0.0938 INCHES FIRST END IN
Nominal Outside Diameter1.0580 INCHES IN
Bore Nominal Diameter0.2500 INCHES BOTH ENDS IN
Pitch Diameter1.0000 INCHES NOMINAL IN
Helix Angle45.0000 DEGREES
Bore StylePLAIN BOTH ENDS
Hub Style DesignatorPINNED FIRST END
Teeth Quantity24
Teeth TypeSINGLE HELIX
Tooth DirectionLEFT
Pressure Angle14.5000 DEGREES
Nominal Distance Between Body Face and Protruding Hub End0.250 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-011-8537SAE J512 4 010111B INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
5935-00-402-129450284 INTERCHANGEABLE
Connector,receptacle,electrical
L3harris Technologies, Inc Div Space & Airborne Systems
7021-01-347-8737 INTERCHANGEABLE
Computer,digital
Cross-Reference Index
Part NumberManufacturer
SCB69391 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
50284 Kleinschmidt Inc (USA)
Related Parts
4730-00-011-8537INTERCHANGEABLE
NUT,TUBE COUPLING
SAE J512 4 010111B
5935-00-402-1294INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
50284
7021-01-347-8737INTERCHANGEABLE
COMPUTER,DIGITAL

Frequently Asked Questions

What is NSN 3020-00-203-1519?

NSN 3020-00-203-1519 is a Gear,helical, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-203-1519?

NSN 3020-00-203-1519 has 2 cross-referenced part numbers: SCB69391 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 50284 (Kleinschmidt Inc).

What NSN replaces 3020-00-203-1519?

There are 3 known substitutes for 3020-00-203-1519: 4730-00-011-8537, 5935-00-402-1294, 7021-01-347-8737. Verify interchangeability with system specifications before substitution.

What are the specifications of SCB69391?

Key specifications for SCB69391: Face Nominal Width: 0.188 INCHES IN; Body Style: WEBBED, OFFSET, SOLID; Material Document and Classification: QQ-B-671,CLASS 3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Style Designator: PROTRUDING HUB, RECESSED BODY. 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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