PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GC14-20Gear,spur

Secs Inc · NSN 3020-00-204-2122 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-204-2122 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-204-2122. Primary manufacturer part number: GC14-20.
Features
  • Gear,spur — FSC 3020
  • Nominal Distance Between Body Face and Protruding Hub End: 0.281 INCHES FIRST END IN
  • Precision Classification: QUALITY NUMBER 10
  • Pitch Diameter: 0.4156 INCHES MINIMUM AND 0.4166 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Face Nominal Width: 0.125 INCHES IN
  • Clamping Surface Nominal Length: 0.250 INCHES FIRST END IN
  • 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 3020-00-204-2122, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Secs Inc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-204-2122
Primary Part NumberGC14-20
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSecs Inc
StatusACTIVE
Nominal Distance Between Body Face and Protruding Hub End0.281 INCHES FIRST END IN
Precision ClassificationQUALITY NUMBER 10
Pitch Diameter0.4156 INCHES MINIMUM AND 0.4166 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Face Nominal Width0.125 INCHES IN
Clamping Surface Nominal Length0.250 INCHES FIRST END IN
Bore Nominal Diameter0.250 INCHES BOTH ENDS IN
Hub Nominal Diameter0.312 INCHES FIRST END IN
Body StylePLAIN, SOLID
Attachment MethodCLAMP
Pressure Angle20.0000 DEGREES
Tooth FormSTANDARD
Material Document and ClassificationQQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
Bore StylePLAIN BOTH ENDS
MaterialSTEEL COMP 303 OVERALL
Style DesignatorPROTRUDING HUB
Teeth Quantity20
Hub Style DesignatorSPLIT FIRST END
Nominal Outside Diameter0.458 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2520-00-141-3171HC-120 INTERCHANGEABLE
Breather
Hydro-Craft, Inc.
4320-00-308-6747G10194PC94 INTERCHANGEABLE
Adapter Assembly with Zerk Fitti
Siemens Energy, Inc.
5360-00-454-0409H120 INTERCHANGEABLE
Spring
Uhan Bros P O Box 264 Wellston Mi 49689
5310-00-469-3699H120 INTERCHANGEABLE
Washer,saddle
Abb Installation Products Inc
7520-00-579-90539053 INTERCHANGEABLE
Dispenser,pressure Sensitive Adh
Safina Office Products, Inc. Dba Safina Office Products Inc
4520-01-367-2739 INTERCHANGEABLE
Heater,duct Type,portable
Cross-Reference Index
Part NumberManufacturer
GC14-20 PRIMARY Secs Inc (USA)
M48S20 PRIMARY Designatronics Inc Perfect Gear and Instrument Div (USA)
13027298 Us Army Aviation and Missile Command (USA)
C48S18-20 W. M. Berg, Inc. (USA)
10085806 Nimikkeistokeskus Ncb Finland (FIN)
H1-20 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
R21-20 PRIMARY Designatronics Incorporated Div Sterling Instruments Div (USA)
Related Parts
2520-00-141-3171INTERCHANGEABLE
BREATHER
HC-120
4320-00-308-6747INTERCHANGEABLE
ADAPTER ASSEMBLY WITH ZERK FITTI
G10194PC94
5360-00-454-0409INTERCHANGEABLE
SPRING
H120
5310-00-469-3699INTERCHANGEABLE
WASHER,SADDLE
H120
7520-00-579-9053INTERCHANGEABLE
DISPENSER,PRESSURE SENSITIVE ADH
9053
4520-01-367-2739INTERCHANGEABLE
HEATER,DUCT TYPE,PORTABLE

Frequently Asked Questions

What is NSN 3020-00-204-2122?

NSN 3020-00-204-2122 is a Gear,spur, manufactured by Secs Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-204-2122?

NSN 3020-00-204-2122 has 7 cross-referenced part numbers: GC14-20 (Secs Inc), M48S20 (Designatronics Inc Perfect Gear and Instrument Div), 13027298 (Us Army Aviation and Missile Command), C48S18-20 (W. M. Berg, Inc.), 10085806 (Nimikkeistokeskus Ncb Finland) and 2 more.

What NSN replaces 3020-00-204-2122?

There are 6 known substitutes for 3020-00-204-2122: 2520-00-141-3171, 4320-00-308-6747, 5360-00-454-0409 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GC14-20?

Key specifications for GC14-20: Nominal Distance Between Body Face and Protruding Hub End: 0.281 INCHES FIRST END IN; Precision Classification: QUALITY NUMBER 10; Pitch Diameter: 0.4156 INCHES MINIMUM AND 0.4166 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 20 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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