PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

164-90Gear,spur

Southern Gear & Machine Inc · NSN 3020-00-988-6933 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-988-6933 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-988-6933. Primary manufacturer part number: 164-90.
Features
  • Gear,spur — FSC 3020
  • 14 verified cross-references
  • Primary manufacturer: Southern Gear & Machine Inc
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-988-6933, 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. This item has 14 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameGear,spur
FSC / FSG3020 — No Item Name Available (FSG 30)
ManufacturersSouthern Gear & Machine Inc (CAGE 01351); Roller Bearing Co of America, Inc Div Pic Design (CAGE 00141); Secs Inc (CAGE 23266); Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (CAGE 97942); Westinghouse Electric Corp (CAGE 79500)
Technical Specifications
ParameterValue
NSN3020-00-988-6933
Primary Part Number164-90
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSouthern Gear & Machine Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
6105-00-124-5829 INTERCHANGEABLE
Motor,alternating Current
5305-00-282-3590 INTERCHANGEABLE
Screw,machine
5360-00-664-39271818 INTERCHANGEABLE
Spring,helical,compression
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
3020-00-985-30162330C9005-19 INTERCHANGEABLE
Gear,spur
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
3030-01-084-240315490 INTERCHANGEABLE
Belt,v
Carlisle Power Transmission Products Inc
5310-01-109-264715490 INTERCHANGEABLE
Washer
Abd Intl Inc Dba Abdick
8145-01-130-320115490 INTERCHANGEABLE
Shipping and Storage Container,e
Naval Inventory Control Point
5945-01-142-804515490 INTERCHANGEABLE
Solenoid Assembly
Aerocontrolex Group, Inc. Div Talley Actuators
5220-01-243-5411G490 INTERCHANGEABLE
Inspection,gage
Daniels Manufacturing Corporation
7610-01-689-7724G490 INTERCHANGEABLE
Manual,technical
Team Wendy Llc Div Team Wendy
Cross-Reference Index
Part NumberManufacturer
164-90 PRIMARY Southern Gear & Machine Inc (USA)
G4-90 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
GP25-90 PRIMARY Secs Inc (USA)
347C500A1C4D090 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
15490 PRIMARY Southern Gear & Machine Inc (USA)
347C500A1C4D090 Westinghouse Electric Corp (USA)
P48A26-90 W. M. Berg, Inc. (USA)
387688-1 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
4890H20 1-4 PRIMARY Harmonic Drive L.l.c. (USA)
154-90 PRIMARY Southern Gear & Machine Inc (USA)
C48A90 PRIMARY Designatronics Inc Perfect Gear and Instrument Div (USA)
H21A90 PRIMARY Designatronics Incorporated Div Sterling Instruments Div (USA)
GP25-90P1 PRIMARY Secs Inc (USA)
GX16045-90 Unisys Corp Defense Systems C S D Field Engineering (USA)
Related Parts
6105-00-124-5829INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5305-00-282-3590INTERCHANGEABLE
SCREW,MACHINE
5360-00-664-3927INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1818
3020-00-985-3016INTERCHANGEABLE
GEAR,SPUR
2330C9005-19
3030-01-084-2403INTERCHANGEABLE
BELT,V
15490
5310-01-109-2647INTERCHANGEABLE
WASHER
15490
8145-01-130-3201INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,E
15490
5945-01-142-8045INTERCHANGEABLE
SOLENOID ASSEMBLY
15490
5220-01-243-5411INTERCHANGEABLE
INSPECTION,GAGE
G490
7610-01-689-7724INTERCHANGEABLE
MANUAL,TECHNICAL
G490

Frequently Asked Questions

What is NSN 3020-00-988-6933?

NSN 3020-00-988-6933 is a Gear,spur, manufactured by Southern Gear & Machine Inc, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-988-6933?

NSN 3020-00-988-6933 has 14 cross-referenced part numbers: 164-90 (Southern Gear & Machine Inc), G4-90 (Roller Bearing Co of America, Inc Div Pic Design), GP25-90 (Secs Inc), 347C500A1C4D090 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 15490 (Southern Gear & Machine Inc) and 9 more.

What NSN replaces 3020-00-988-6933?

There are 10 known substitutes for 3020-00-988-6933: 6105-00-124-5829, 5305-00-282-3590, 5360-00-664-3927 and 7 more. Verify interchangeability with system specifications before substitution.

Is NSN 3020-00-988-6933 still in active supply?

NSN 3020-00-988-6933 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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