PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3277Gear,spur

L3harris Technologies, Inc. Div Space and Airborne Systems · NSN 3020-00-770-1001 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-770-1001 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-770-1001. Primary manufacturer part number: 3277.
Features
  • Gear,spur — FSC 3020
  • Hub Nominal Diameter: 0.437 INCHES FIRST END IN
  • Bore Style: PLAIN BOTH ENDS
  • Style Designator: PROTRUDING HUB
  • Hub Style Designator: PINNED FIRST END
  • Face Nominal Width: 0.125 INCHES IN
  • Pitch Diameter: 1.2500 INCHES NOMINAL IN
  • Body Style: PLAIN, SOLID
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 3020-00-770-1001, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is L3harris Technologies, Inc. Div Space and Airborne Systems. Government technical data includes 14 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
NSN3020-00-770-1001
Primary Part Number3277
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Div Space and Airborne Systems
StatusACTIVE
Hub Nominal Diameter0.437 INCHES FIRST END IN
Bore StylePLAIN BOTH ENDS
Style DesignatorPROTRUDING HUB
Hub Style DesignatorPINNED FIRST END
Face Nominal Width0.125 INCHES IN
Pitch Diameter1.2500 INCHES NOMINAL IN
Body StylePLAIN, SOLID
Tooth FormSTANDARD
Nominal Outside Diameter1.291 INCHES IN
Bore Nominal Diameter0.187 INCHES BOTH ENDS IN
Pressure Angle20.0000 DEGREES
Nominal Distance Between Body Face and Protruding Hub End0.250 INCHES FIRST END IN
MaterialCOPPER ALLOY OVERALL
Teeth Quantity60
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
9390-00-057-7360 INTERCHANGEABLE
Sheeting,reflective
9390-00-106-2466ASTM D4956-04 INTERCHANGEABLE
Tape,reflective
American Society for Testing and Materials Dba Astm International
2810-00-118-93243277 INTERCHANGEABLE
Jaw
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5310-00-151-88393277 INTERCHANGEABLE
Washer,flat
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
5120-00-215-21903277 INTERCHANGEABLE
Wrench,cap Pump
General Motors Llc Dba General Motors Llc
4330-00-288-646633277 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
3040-00-311-211409-0704 INTERCHANGEABLE
Lever,manual Control
Trailer Component Manufacturing Inc.
5935-00-914-0059S0S93-32-77 INTERCHANGEABLE
Connector,plug,electrical
Te Connectivity Corporation Dba Microdot Products
5905-01-134-5241327-01801 INTERCHANGEABLE
Resistor,thermal
North America Controls Co Ltd
4730-01-173-41692191430-060 INTERCHANGEABLE
Plug,pipe
Cleveland Service Center
Cross-Reference Index
Part NumberManufacturer
3277 PRIMARY L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
Related Parts
9390-00-057-7360INTERCHANGEABLE
SHEETING,REFLECTIVE
9390-00-106-2466INTERCHANGEABLE
TAPE,REFLECTIVE
ASTM D4956-04
2810-00-118-9324INTERCHANGEABLE
JAW
3277
5310-00-151-8839INTERCHANGEABLE
WASHER,FLAT
3277
5120-00-215-2190INTERCHANGEABLE
WRENCH,CAP PUMP
3277
4330-00-288-6466INTERCHANGEABLE
FILTER ELEMENT,FLUID
33277
3040-00-311-2114INTERCHANGEABLE
LEVER,MANUAL CONTROL
09-0704
5935-00-914-0059INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
S0S93-32-77
5905-01-134-5241INTERCHANGEABLE
RESISTOR,THERMAL
327-01801
4730-01-173-4169INTERCHANGEABLE
PLUG,PIPE
2191430-060
5935-01-210-6359INTERCHANGEABLE
JACK,TIP
3277
3110-01-246-2447INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3020-00-770-1001?

NSN 3020-00-770-1001 is a Gear,spur, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-770-1001?

NSN 3020-00-770-1001 has 1 cross-referenced part number: 3277 (L3harris Technologies, Inc. Div Space and Airborne Systems).

What NSN replaces 3020-00-770-1001?

There are 12 known substitutes for 3020-00-770-1001: 9390-00-057-7360, 9390-00-106-2466, 2810-00-118-9324 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3277?

Key specifications for 3277: Hub Nominal Diameter: 0.437 INCHES FIRST END IN; Bore Style: PLAIN BOTH ENDS; Style Designator: PROTRUDING HUB; Hub Style Designator: PINNED FIRST END. 14 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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