PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

154-25Gear,spur

Southern Gear & Machine Inc · NSN 3020-00-827-4786 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-827-4786 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-827-4786. Primary manufacturer part number: 154-25.
Features
  • Gear,spur — FSC 3020
  • Nominal Outside Diameter: 0.561 INCHES IN
  • Material Document and Classification: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Bore Style: PLAIN BOTH ENDS
  • Precision Classification: QUALITY NUMBER 10
  • Style Designator: PROTRUDING HUB
  • Surface Treatment: PASSIVATE OVERALL
  • Bore Nominal Diameter: 0.250 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 3020-00-827-4786, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Southern Gear & Machine Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-827-4786
Primary Part Number154-25
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSouthern Gear & Machine Inc
StatusACTIVE
Nominal Outside Diameter0.561 INCHES IN
Material Document and ClassificationQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Bore StylePLAIN BOTH ENDS
Precision ClassificationQUALITY NUMBER 10
Style DesignatorPROTRUDING HUB
Surface TreatmentPASSIVATE OVERALL
Bore Nominal Diameter0.250 INCHES BOTH ENDS IN
Face Nominal Width0.125 INCHES IN
MaterialSTEEL COMP 303 OVERALL
Tooth FormSTANDARD
Pressure Angle20.0000 DEGREES
Nominal Distance Between Body Face and Protruding Hub End0.250 INCHES FIRST END IN
Hub Nominal Diameter0.406 INCHES FIRST END IN
Hub Style DesignatorPINNED FIRST END
Pitch Diameter0.5198 INCHES MINIMUM AND 0.5208 INCHES MAXIMUM IN
Body StylePLAIN, SOLID
Teeth Quantity25
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3455-00-250-0789 INTERCHANGEABLE
Cutter,milling,end
5120-00-394-763815425 INTERCHANGEABLE
Tool,actuator Valve
Ashcroft Inc Dba Heise
5935-00-722-3190UG594AU INTERCHANGEABLE
Connector,plug,electrical
Joint Electronics Type Designation System
2915-00-817-444815425 INTERCHANGEABLE
Support,compressor
Williams International Co., L.l.c.
5133-01-054-053502860 INTERCHANGEABLE
Drill,twist
Kennametal Inc. Div Kennametal Industrial Products Group
6105-01-197-290015425 INTERCHANGEABLE
Rotor,motor
Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
3030-01-307-291615425 INTERCHANGEABLE
Belt,v
Carlisle Power Transmission Products Inc
5999-01-398-183015425 INTERCHANGEABLE
Contact,electrical
Grimes Aerospace Company
6550-01-541-4655ECL-STORE INTERCHANGEABLE
Detergent and Preservative Rinse
Joint Program Executive Office for Chemical Bio Defense
4330-01-664-2927EAB10P020GE16 INTERCHANGEABLE
Filter Element,fluid
Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters
Cross-Reference Index
Part NumberManufacturer
SMB423118 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
154-25 PRIMARY Southern Gear & Machine Inc (USA)
SMB423118 Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories (USA)
Related Parts
3455-00-250-0789INTERCHANGEABLE
CUTTER,MILLING,END
5120-00-394-7638INTERCHANGEABLE
TOOL,ACTUATOR VALVE
15425
5935-00-722-3190INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
UG594AU
2915-00-817-4448INTERCHANGEABLE
SUPPORT,COMPRESSOR
15425
5133-01-054-0535INTERCHANGEABLE
DRILL,TWIST
02860
6105-01-197-2900INTERCHANGEABLE
ROTOR,MOTOR
15425
3030-01-307-2916INTERCHANGEABLE
BELT,V
15425
5999-01-398-1830INTERCHANGEABLE
CONTACT,ELECTRICAL
15425
6550-01-541-4655INTERCHANGEABLE
DETERGENT AND PRESERVATIVE RINSE
ECL-STORE
4330-01-664-2927INTERCHANGEABLE
FILTER ELEMENT,FLUID
EAB10P020GE16

Frequently Asked Questions

What is NSN 3020-00-827-4786?

NSN 3020-00-827-4786 is a Gear,spur, manufactured by Southern Gear & Machine Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-827-4786?

NSN 3020-00-827-4786 has 3 cross-referenced part numbers: SMB423118 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 154-25 (Southern Gear & Machine Inc), SMB423118 (Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories).

What NSN replaces 3020-00-827-4786?

There are 10 known substitutes for 3020-00-827-4786: 3455-00-250-0789, 5120-00-394-7638, 5935-00-722-3190 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 154-25?

Key specifications for 154-25: Nominal Outside Diameter: 0.561 INCHES IN; Material Document and Classification: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Bore Style: PLAIN BOTH ENDS; Precision Classification: QUALITY NUMBER 10. 17 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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