PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1761-1Gear,antibacklash,spur

Drs Signal Solutions, Inc. · NSN 3020-00-957-7957 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-957-7957 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-957-7957. Primary manufacturer part number: 1761-1.
Features
  • Gear,antibacklash,spur — FSC 3020
  • Face Nominal Width: 0.125 INCHES IN
  • Style Designator: PROTRUDING HUB
  • Bore Style: PLAIN BOTH ENDS
  • Nominal Distance Between Body Face and Protruding Hub End: 0.250 INCHES FIRST END IN
  • Hub Style Designator: PINNED FIRST END
  • Teeth Quantity: 185
  • Pitch Diameter: 2.5694 INCHES NOMINAL IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,antibacklash,spur, cataloged under National Stock Number 3020-00-957-7957, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Drs Signal Solutions, Inc.. Government technical data includes 13 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-957-7957
Primary Part Number1761-1
Item NameGear,antibacklash,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerDrs Signal Solutions, Inc.
StatusACTIVE
Face Nominal Width0.125 INCHES IN
Style DesignatorPROTRUDING HUB
Bore StylePLAIN BOTH ENDS
Nominal Distance Between Body Face and Protruding Hub End0.250 INCHES FIRST END IN
Hub Style DesignatorPINNED FIRST END
Teeth Quantity185
Pitch Diameter2.5694 INCHES NOMINAL IN
Hub Nominal Diameter0.771 INCHES FIRST END IN
MaterialSTEEL OVERALL
Pressure Angle20.0000 DEGREES
Bore Nominal Diameter0.250 INCHES BOTH ENDS IN
Nominal Outside Diameter2.5874 INCHES IN
Tooth FormSTANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5950-00-382-964606096 INTERCHANGEABLE
Reactor
L3harris Technologies, Inc. Div Space and Airborne Systems
3455-00-618-6007 INTERCHANGEABLE
Cutter,milling,end
3030-00-857-197417605 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
5360-01-043-025017611 INTERCHANGEABLE
Spring,helical,compression
Parker-Hannifin Corporation Dba Control Systems Division
5330-01-395-517217611 INTERCHANGEABLE
Gasket
Westerbeke Corporation
Cross-Reference Index
Part NumberManufacturer
1761-1 PRIMARY Drs Signal Solutions, Inc. (USA)
Related Parts
5950-00-382-9646INTERCHANGEABLE
REACTOR
06096
3455-00-618-6007INTERCHANGEABLE
CUTTER,MILLING,END
3030-00-857-1974INTERCHANGEABLE
BELT,V
17605
5360-01-043-0250INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
17611
5330-01-395-5172INTERCHANGEABLE
GASKET
17611

Frequently Asked Questions

What is NSN 3020-00-957-7957?

NSN 3020-00-957-7957 is a Gear,antibacklash,spur, manufactured by Drs Signal Solutions, Inc., classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-957-7957?

NSN 3020-00-957-7957 has 1 cross-referenced part number: 1761-1 (Drs Signal Solutions, Inc.).

What NSN replaces 3020-00-957-7957?

There are 5 known substitutes for 3020-00-957-7957: 5950-00-382-9646, 3455-00-618-6007, 3030-00-857-1974 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1761-1?

Key specifications for 1761-1: Face Nominal Width: 0.125 INCHES IN; Style Designator: PROTRUDING HUB; Bore Style: PLAIN BOTH ENDS; Nominal Distance Between Body Face and Protruding Hub End: 0.250 INCHES FIRST END IN. 13 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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