PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

17R123Gear,spur

Espey Mfg and Electronics Corp · NSN 3020-00-242-9692 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-242-9692 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-242-9692. Primary manufacturer part number: 17R123.
Features
  • Gear,spur — FSC 3020
  • Body Style: PLAIN, SOLID
  • Counterbore Nominal Diameter: 0.750 INCHES FIRST END IN
  • Material Document and Classification: MIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Teeth Quantity: 49
  • Bore Nominal Diameter: 0.563 INCHES BOTH ENDS IN
  • Style Designator: HUBLESS
  • Pitch Diameter: 1.0132 INCHES MINIMUM AND 1.0170 INCHES MAXIMUM IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Plastic Phenolic Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-242-9692, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Espey Mfg and Electronics Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-242-9692
Primary Part Number17R123
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerEspey Mfg and Electronics Corp
StatusCANCELLED
Body StylePLAIN, SOLID
Counterbore Nominal Diameter0.750 INCHES FIRST END IN
Material Document and ClassificationMIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Teeth Quantity49
Bore Nominal Diameter0.563 INCHES BOTH ENDS IN
Style DesignatorHUBLESS
Pitch Diameter1.0132 INCHES MINIMUM AND 1.0170 INCHES MAXIMUM IN
Pressure Angle14.5000 DEGREES
Tooth FormSTANDARD
Face Nominal Width0.156 INCHES IN
Bore StyleW/COUNTERBORE BOTH ENDS
MaterialPLASTIC PHENOLIC OVERALL
Precision ClassificationQUALITY NUMBER 8
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-177-54589333C0009-10 INTERCHANGEABLE
Screw,externally Relieved Body
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5930-00-252-25754013696-2 INTERCHANGEABLE
Switch,push
Agco Corp Parts Opn
1660-00-485-592650159 INTERCHANGEABLE
Plug-Valve---Appl 1
Triumph Thermal Systems - Maryland, Inc.
5330-00-546-5399 INTERCHANGEABLE
Seal,plain Encased
1680-00-627-513017123 INTERCHANGEABLE
Shaft,jackscrew
Aerocontrolex Group, Inc. Div Talley Actuators
5930-00-630-690717123 INTERCHANGEABLE
Switch,thermostatic
Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems
4130-00-765-732917123 INTERCHANGEABLE
Spark Arrestor,muff
Hdt Expeditionary Systems Inc
5325-00-777-7193 INTERCHANGEABLE
Cam
1005-00-831-137050159 INTERCHANGEABLE
Cap,mainspring
Colt's Manufacturing Company, Llc
4730-00-870-012917123 INTERCHANGEABLE
Strainer Element,sediment
Collins Engine Nozzles, Inc
Cross-Reference Index
Part NumberManufacturer
17R123 Espey Mfg and Electronics Corp (USA)
17-123 Espey Mfg and Electronics Corp (USA)
50159 Eaton Corp Electronic Instrumentation Div Los Angeles Plant (USA)
Related Parts
5305-00-177-5458INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
9333C0009-10
5930-00-252-2575INTERCHANGEABLE
SWITCH,PUSH
4013696-2
1660-00-485-5926INTERCHANGEABLE
PLUG-VALVE---APPL 1
50159
5330-00-546-5399INTERCHANGEABLE
SEAL,PLAIN ENCASED
1680-00-627-5130INTERCHANGEABLE
SHAFT,JACKSCREW
17123
5930-00-630-6907INTERCHANGEABLE
SWITCH,THERMOSTATIC
17123
4130-00-765-7329INTERCHANGEABLE
SPARK ARRESTOR,MUFF
17123
5325-00-777-7193INTERCHANGEABLE
CAM
1005-00-831-1370INTERCHANGEABLE
CAP,MAINSPRING
50159
4730-00-870-0129INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
17123
5310-00-980-7607INTERCHANGEABLE
NUT
50-159
5133-01-045-4946INTERCHANGEABLE
DRILL,TWIST
18662 OLE PRO

Frequently Asked Questions

What is NSN 3020-00-242-9692?

NSN 3020-00-242-9692 is a Gear,spur, manufactured by Espey Mfg and Electronics Corp, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-242-9692?

NSN 3020-00-242-9692 has 3 cross-referenced part numbers: 17R123 (Espey Mfg and Electronics Corp), 17-123 (Espey Mfg and Electronics Corp), 50159 (Eaton Corp Electronic Instrumentation Div Los Angeles Plant).

What NSN replaces 3020-00-242-9692?

There are 12 known substitutes for 3020-00-242-9692: 5305-00-177-5458, 5930-00-252-2575, 1660-00-485-5926 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 17R123?

Key specifications for 17R123: Body Style: PLAIN, SOLID; Counterbore Nominal Diameter: 0.750 INCHES FIRST END IN; Material Document and Classification: MIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Teeth Quantity: 49. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-242-9692 still in active supply?

NSN 3020-00-242-9692 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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