PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

110651Gear,helical

American Telephone and Telegraph Co · NSN 3020-00-351-7870 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-351-7870 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-351-7870. Primary manufacturer part number: 110651.
Features
  • Gear,helical — FSC 3020
  • Tooth Direction: LEFT
  • Attachment Method: MOUNTING HOLE
  • Bore Nominal Diameter: 0.5020 INCHES BOTH ENDS IN
  • Style Designator: HUBLESS
  • Bolt Hole Circle Nominal Diameter: 0.812 INCHES AXIALLY THROUGH BODY FIRST END IN
  • Face Nominal Width: 0.500 INCHES IN
  • Tooth Form: STANDARD
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Plastic Phenolic Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-00-351-7870, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is American Telephone and Telegraph Co. Government technical data includes 14 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-351-7870
Primary Part Number110651
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerAmerican Telephone and Telegraph Co
StatusACTIVE
Tooth DirectionLEFT
Attachment MethodMOUNTING HOLE
Bore Nominal Diameter0.5020 INCHES BOTH ENDS IN
Style DesignatorHUBLESS
Bolt Hole Circle Nominal Diameter0.812 INCHES AXIALLY THROUGH BODY FIRST END IN
Face Nominal Width0.500 INCHES IN
Tooth FormSTANDARD
Teeth TypeSINGLE HELIX
Nominal Outside Diameter2.0030 INCHES IN
Pitch Diameter1.9367 INCHES NOMINAL IN
Pressure Angle14.5000 DEGREES
MaterialPLASTIC PHENOLIC OVERALL
Body StylePLAIN, SOLID
Teeth Quantity53
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5961-00-458-8675110-65-1 INTERCHANGEABLE
Semiconductor Device,diode
Avionics Specialties, Inc.
5910-00-536-344111065-1 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Pax Mfg Corp Hammarlund Mfg Co Div
5310-00-828-443211065-1 INTERCHANGEABLE
Washer,shouldered and Recessed
Breeze-Eastern Llc
6620-00-962-8698NW27683 INTERCHANGEABLE
Gage,pressure,dial Indicating
Tld Wollard Llc
3120-01-168-4514110651 INTERCHANGEABLE
Bearing,sleeve
Drs Technologies Canada Ltd
5930-01-439-604511065-1 INTERCHANGEABLE
Switch Assembly
Milpower, Inc. Dba Milpower Inc
Cross-Reference Index
Part NumberManufacturer
110651 American Telephone and Telegraph Co (USA)
110651 At and T Corp (USA)
Related Parts
5961-00-458-8675INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
110-65-1
5910-00-536-3441INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
11065-1
5310-00-828-4432INTERCHANGEABLE
WASHER,SHOULDERED AND RECESSED
11065-1
6620-00-962-8698INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
NW27683
3120-01-168-4514INTERCHANGEABLE
BEARING,SLEEVE
110651
5930-01-439-6045INTERCHANGEABLE
SWITCH ASSEMBLY
11065-1

Frequently Asked Questions

What is NSN 3020-00-351-7870?

NSN 3020-00-351-7870 is a Gear,helical, manufactured by American Telephone and Telegraph Co, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-351-7870?

NSN 3020-00-351-7870 has 2 cross-referenced part numbers: 110651 (American Telephone and Telegraph Co), 110651 (At and T Corp).

What NSN replaces 3020-00-351-7870?

There are 6 known substitutes for 3020-00-351-7870: 5961-00-458-8675, 5910-00-536-3441, 5310-00-828-4432 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 110651?

Key specifications for 110651: Tooth Direction: LEFT; Attachment Method: MOUNTING HOLE; Bore Nominal Diameter: 0.5020 INCHES BOTH ENDS IN; Style Designator: HUBLESS. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com