PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

870797Gear,spur

Northrop Grumman Systems Corporation · NSN 3020-00-542-9851 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-542-9851 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-542-9851. Primary manufacturer part number: 870797.
Features
  • Gear,spur — FSC 3020
  • Hub Nominal Diameter: 1.5000 INCHES BOTH ENDS IN
  • Nominal Outside Diameter: 2.687 INCHES IN
  • Material: COPPER ALLOY 510 OVERALL
  • Bore Nominal Diameter: 0.3125 INCHES BOTH ENDS IN
  • Face Nominal Width: 0.094 INCHES IN
  • Pressure Angle: 14.5000 DEGREES
  • Nominal Distance Between Body Face and Protruding Hub End: 0.2560 INCHES FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Copper Alloy 510 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-542-9851, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-542-9851
Primary Part Number870797
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
Hub Nominal Diameter1.5000 INCHES BOTH ENDS IN
Nominal Outside Diameter2.687 INCHES IN
MaterialCOPPER ALLOY 510 OVERALL
Bore Nominal Diameter0.3125 INCHES BOTH ENDS IN
Face Nominal Width0.094 INCHES IN
Pressure Angle14.5000 DEGREES
Nominal Distance Between Body Face and Protruding Hub End0.2560 INCHES FIRST END IN
Teeth Quantity127
Pitch Diameter2.6450 INCHES NOMINAL IN
Body StyleWEBBED, OFFSET, SOLID
Material Document and ClassificationQQ-B-750,COMP A,HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Bore StylePLAIN BOTH ENDS
Hub Style DesignatorPLAIN BOTH ENDS
Style DesignatorONE PROTRUDING HUB, ONE FLUSH HUB
Tooth FormSTANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6240-00-914-5607 INTERCHANGEABLE
Lamp,incandescent
Cross-Reference Index
Part NumberManufacturer
870797 PRIMARY Northrop Grumman Systems Corporation (USA)
870797 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
6240-00-914-5607INTERCHANGEABLE
LAMP,INCANDESCENT

Frequently Asked Questions

What is NSN 3020-00-542-9851?

NSN 3020-00-542-9851 is a Gear,spur, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-542-9851?

NSN 3020-00-542-9851 has 2 cross-referenced part numbers: 870797 (Northrop Grumman Systems Corporation), 870797 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 3020-00-542-9851?

There is 1 known substitute for 3020-00-542-9851: 6240-00-914-5607. Verify interchangeability with system specifications before substitution.

What are the specifications of 870797?

Key specifications for 870797: Hub Nominal Diameter: 1.5000 INCHES BOTH ENDS IN; Nominal Outside Diameter: 2.687 INCHES IN; Material: COPPER ALLOY 510 OVERALL; Bore Nominal Diameter: 0.3125 INCHES BOTH ENDS IN. 15 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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