PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E102Gear,spur

Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co · NSN 3020-00-352-5906 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-352-5906 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-352-5906. Primary manufacturer part number: E102.
Features
  • Gear,spur — FSC 3020
  • Body Style: PLAIN, SOLID
  • Hardness Rating: 22.8 ROCKWELL C MINIMUM AND 29.9 ROCKWELL C MAXIMUM OVERALL
  • Nominal Overall Length: 2.969 INCHES IN
  • Teeth Quantity: 12
  • Hub Nominal Diameter: 3.250 INCHES FIRST END IN
  • Nominal Outside Diameter: 4.666 INCHES IN
  • Counterbore Nominal Diameter: 2.687 INCHES SECOND END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 4142 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-352-5906, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co. Government technical data includes 19 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-352-5906
Primary Part NumberE102
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerKoehring Cranes and Excavators Inc Sub of Northwest Engineering Co
StatusACTIVE
Body StylePLAIN, SOLID
Hardness Rating22.8 ROCKWELL C MINIMUM AND 29.9 ROCKWELL C MAXIMUM OVERALL
Nominal Overall Length2.969 INCHES IN
Teeth Quantity12
Hub Nominal Diameter3.250 INCHES FIRST END IN
Nominal Outside Diameter4.666 INCHES IN
Counterbore Nominal Diameter2.687 INCHES SECOND END IN
Bore StyleSTRAIGHT SPLINE BOTH ENDS
Counterbore Nominal Depth0.500 INCHES SECOND END IN
Face Nominal Width2.750 INCHES IN
MaterialSTEEL COMP 4142 OVERALL
Spline Quantity6 BOTH ENDS
Pressure Angle25.0000 DEGREES
Tooth FormSTANDARD
Nominal Distance Between Body Face and Protruding Hub End0.219 INCHES FIRST END IN
Hub Style DesignatorPLAIN FIRST END
Material Document and ClassificationQQ-S-624 COMP 4142 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorPROTRUDING HUB
Pitch Diameter4.0000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5985-00-146-7567 INTERCHANGEABLE
Attenuator,variable
5945-00-258-75853246675 INTERCHANGEABLE
Relay,electromagnetic
Hatch & Kirk, Inc.
5970-00-296-09688A168 INTERCHANGEABLE
Insulator,plate
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
3456-00-640-3061F1385500PCC102LR102 INTERCHANGEABLE
CAGE Assembly,roller Tube Expand
Naval Ship Systems Command
5961-00-758-6300J202-18 INTERCHANGEABLE
Transistor
Siliconix Incorporated Div Siliconix
4320-00-932-4876679A0023C041A INTERCHANGEABLE
Liner,throat
Circor Naval Solutions Llc Dba Warren Pumps
6105-01-142-5264 INTERCHANGEABLE
Motor,alternating Current
5999-01-439-6852E102 INTERCHANGEABLE
Heater,thermal Release
Schneider Electric Usa, Inc.
1240-01-459-6694E102 INTERCHANGEABLE
Ring,retaining,optical Element
Unertl John Optical Co Inc
4920-01-499-9261E102 INTERCHANGEABLE
Contactor,aircraft,
Koolant Koolers, Inc Dba Schreiber Engineering Corp Div
Cross-Reference Index
Part NumberManufacturer
E102 Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co (USA)
E102A Koehring Co Lorain Div Parts Dept (USA)
E102 Koehring Co Lorain Div (USA)
Related Parts
5985-00-146-7567INTERCHANGEABLE
ATTENUATOR,VARIABLE
5945-00-258-7585INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
3246675
5970-00-296-0968INTERCHANGEABLE
INSULATOR,PLATE
8A168
3456-00-640-3061INTERCHANGEABLE
CAGE ASSEMBLY,ROLLER TUBE EXPAND
F1385500PCC102LR102
5961-00-758-6300INTERCHANGEABLE
TRANSISTOR
J202-18
4320-00-932-4876INTERCHANGEABLE
LINER,THROAT
679A0023C041A
6105-01-142-5264INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5999-01-439-6852INTERCHANGEABLE
HEATER,THERMAL RELEASE
E102
1240-01-459-6694INTERCHANGEABLE
RING,RETAINING,OPTICAL ELEMENT
E102
4920-01-499-9261INTERCHANGEABLE
CONTACTOR,AIRCRAFT,
E102
6350-01-570-6406INTERCHANGEABLE
ALARM,AUDIBLE-VISUAL
E102A
3950-01-571-0174INTERCHANGEABLE
HOUSING,MECHANICAL DRIVE
E-10-2A

Frequently Asked Questions

What is NSN 3020-00-352-5906?

NSN 3020-00-352-5906 is a Gear,spur, manufactured by Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-352-5906?

NSN 3020-00-352-5906 has 3 cross-referenced part numbers: E102 (Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co), E102A (Koehring Co Lorain Div Parts Dept), E102 (Koehring Co Lorain Div).

What NSN replaces 3020-00-352-5906?

There are 12 known substitutes for 3020-00-352-5906: 5985-00-146-7567, 5945-00-258-7585, 5970-00-296-0968 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of E102?

Key specifications for E102: Body Style: PLAIN, SOLID; Hardness Rating: 22.8 ROCKWELL C MINIMUM AND 29.9 ROCKWELL C MAXIMUM OVERALL; Nominal Overall Length: 2.969 INCHES IN; Teeth Quantity: 12. 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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