PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

818-3AGear,spur

Safeguard Powertech Systems · NSN 3020-01-303-3246 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-303-3246 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-303-3246. Primary manufacturer part number: 818-3A.
Features
  • Gear,spur — FSC 3020
  • Body Style: PLAIN, SOLID
  • Nominal Outside Diameter: 2.674 INCHES IN
  • First Groove Nominal Diameter: 1.343 INCHES FIRST END IN
  • Face Nominal Width: 1.887 INCHES IN
  • First Groove Nominal Width: 0.125 INCHES FIRST END IN
  • Material: STEEL OVERALL
  • Hub Style Designator: 2 GROOVES FIRST END
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-01-303-3246, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Safeguard Powertech Systems. Government technical data includes 24 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-303-3246
Primary Part Number818-3A
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSafeguard Powertech Systems
StatusACTIVE
Body StylePLAIN, SOLID
Nominal Outside Diameter2.674 INCHES IN
First Groove Nominal Diameter1.343 INCHES FIRST END IN
Face Nominal Width1.887 INCHES IN
First Groove Nominal Width0.125 INCHES FIRST END IN
MaterialSTEEL OVERALL
Hub Style Designator2 GROOVES FIRST END
First Groove Nominal Width0.125 INCHES SECOND END IN
Keyway Nominal Width0.311 INCHES BOTH ENDS IN
Hub Style Designator1 GROOVE SECOND END
Hardness Rating57.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
Nominal Distance From End to First Groove0.687 INCHES SECOND END IN
Nominal Distance From End to Second Groove1.926 INCHES FIRST END IN
Second Groove Nominal Width0.125 INCHES FIRST END IN
Nominal Distance From End to First Groove0.687 INCHES FIRST END IN
Nominal Distance Between Body Face and Protruding Hub End0.937 INCHES FIRST END IN
Style DesignatorPROTRUDING HUBS
Bore StyleW/ KEYWAY BOTH ENDS
Hub Nominal Diameter1.377 INCHES FIRST END IN
Second Groove Nominal Diameter1.790 INCHES FIRST END IN
Pressure Angle20.0000 DEGREES
First Groove Nominal Diameter1.343 INCHES SECOND END IN
Hub Nominal Diameter1.377 INCHES SECOND END IN
Teeth Quantity17
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5360-01-341-86658183-A INTERCHANGEABLE
Spring,helical,compression
Burch Company Inc, the
5120-01-399-8916 INTERCHANGEABLE
Wrench,box
5840-01-499-05468183A INTERCHANGEABLE
Receiver Subassembly,radar
Safran Trusted 4d Inc.
Cross-Reference Index
Part NumberManufacturer
818-3A PRIMARY Safeguard Powertech Systems (USA)
Related Parts
5360-01-341-8665INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
8183-A
5120-01-399-8916INTERCHANGEABLE
WRENCH,BOX
5840-01-499-0546INTERCHANGEABLE
RECEIVER SUBASSEMBLY,RADAR
8183A

Frequently Asked Questions

What is NSN 3020-01-303-3246?

NSN 3020-01-303-3246 is a Gear,spur, manufactured by Safeguard Powertech Systems, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-303-3246?

NSN 3020-01-303-3246 has 1 cross-referenced part number: 818-3A (Safeguard Powertech Systems).

What NSN replaces 3020-01-303-3246?

There are 3 known substitutes for 3020-01-303-3246: 5360-01-341-8665, 5120-01-399-8916, 5840-01-499-0546. Verify interchangeability with system specifications before substitution.

What are the specifications of 818-3A?

Key specifications for 818-3A: Body Style: PLAIN, SOLID; Nominal Outside Diameter: 2.674 INCHES IN; First Groove Nominal Diameter: 1.343 INCHES FIRST END IN; Face Nominal Width: 1.887 INCHES IN. 25 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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