PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2129Gear,spur

Davies Associates · NSN 3020-00-679-0273 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-679-0273 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-679-0273. Primary manufacturer part number: 2129.
Features
  • Gear,spur — FSC 3020
  • Style Designator: HUBLESS
  • Pressure Angle: 28.0000 DEGREES
  • Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN
  • Pitch Diameter: 0.5000 INCHES NOMINAL IN
  • Nominal Outside Diameter: 0.594 INCHES IN
  • Teeth Quantity: 8
  • 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,spur, cataloged under National Stock Number 3020-00-679-0273, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Davies Associates. Government technical data includes 10 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-679-0273
Primary Part Number2129
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerDavies Associates
StatusACTIVE
Style DesignatorHUBLESS
Pressure Angle28.0000 DEGREES
Bore Nominal Diameter0.188 INCHES BOTH ENDS IN
Pitch Diameter0.5000 INCHES NOMINAL IN
Nominal Outside Diameter0.594 INCHES IN
Teeth Quantity8
MaterialCOPPER ALLOY OVERALL
Face Nominal Width0.380 INCHES IN
Bore StylePLAIN BOTH ENDS
Body StylePLAIN, SOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-155-65092361204 INTERCHANGEABLE
Bearing,roller,cylindrical
Fairbanks Morse, Llc
4820-00-263-91195698 INTERCHANGEABLE
Valve,gate
Rosco Mfg Co
5331-00-265-1097MS29513-129 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
4820-00-268-91510250 SZ 1/4 IN INTERCHANGEABLE
Valve,gate
Fairbanks Co the
4820-00-268-91520250 SZ 3/8 IN INTERCHANGEABLE
Valve,gate
Fairbanks Co the
9540-00-287-9426 INTERCHANGEABLE
Channel,structural
4820-00-288-7244 INTERCHANGEABLE
Valve,gate
4820-00-595-385614358-C INTERCHANGEABLE
Valve,gate
Blue Tee Corp. Dba Gefco
6145-00-630-0387M27500-16B4U00 INTERCHANGEABLE
Cable,power,electrical
National Electrical Mfrs Assn Dba Nema
5340-00-725-19012129 INTERCHANGEABLE
Standoff,threaded,spacing
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
Cross-Reference Index
Part NumberManufacturer
2129 Davies Associates (USA)
Related Parts
3110-00-155-6509INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
2361204
4820-00-263-9119INTERCHANGEABLE
VALVE,GATE
5698
5331-00-265-1097INTERCHANGEABLE
O-RING
MS29513-129
4820-00-268-9151INTERCHANGEABLE
VALVE,GATE
0250 SZ 1/4 IN
4820-00-268-9152INTERCHANGEABLE
VALVE,GATE
0250 SZ 3/8 IN
9540-00-287-9426INTERCHANGEABLE
CHANNEL,STRUCTURAL
4820-00-288-7244INTERCHANGEABLE
VALVE,GATE
4820-00-595-3856INTERCHANGEABLE
VALVE,GATE
14358-C
6145-00-630-0387INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
M27500-16B4U00
5340-00-725-1901INTERCHANGEABLE
STANDOFF,THREADED,SPACING
2129
5330-00-737-6904INTERCHANGEABLE
GASKET
7376904
5315-00-830-6703INTERCHANGEABLE
PIN
2UU01356

Frequently Asked Questions

What is NSN 3020-00-679-0273?

NSN 3020-00-679-0273 is a Gear,spur, manufactured by Davies Associates, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-679-0273?

NSN 3020-00-679-0273 has 1 cross-referenced part number: 2129 (Davies Associates).

What NSN replaces 3020-00-679-0273?

There are 12 known substitutes for 3020-00-679-0273: 3110-00-155-6509, 4820-00-263-9119, 5331-00-265-1097 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2129?

Key specifications for 2129: Style Designator: HUBLESS; Pressure Angle: 28.0000 DEGREES; Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Pitch Diameter: 0.5000 INCHES NOMINAL IN. 11 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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