PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70815Gear,helical

Telemechanics Inc · NSN 3020-00-223-8214 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-223-8214 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-223-8214. Primary manufacturer part number: 70815.
Features
  • Gear,helical — FSC 3020
  • Teeth Quantity: 40
  • Attachment Method: MOUNTING HOLE
  • Nominal Outside Diameter: 1.7790 INCHES IN
  • Tooth Direction: LEFT
  • Bolt Hole Circle Nominal Diameter: 0.750 INCHES AXIALLY THROUGH BODY FIRST END IN
  • Bore Nominal Diameter: 0.4380 INCHES BOTH ENDS IN
  • Mounting Hole Nominal Diameter: 0.152 INCHES AXIALLY THROUGH BODY FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Plastic Phenol Formaldehyde (pmo) Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-00-223-8214, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Telemechanics Inc. Government technical data includes 18 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-223-8214
Primary Part Number70815
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerTelemechanics Inc
StatusCANCELLED
Teeth Quantity40
Attachment MethodMOUNTING HOLE
Nominal Outside Diameter1.7790 INCHES IN
Tooth DirectionLEFT
Bolt Hole Circle Nominal Diameter0.750 INCHES AXIALLY THROUGH BODY FIRST END IN
Bore Nominal Diameter0.4380 INCHES BOTH ENDS IN
Mounting Hole Nominal Diameter0.152 INCHES AXIALLY THROUGH BODY FIRST END IN
Helix Angle22.6167 DEGREES
Counterbore Nominal Diameter1.062 INCHES COUNTERBORE FIRST END IN
MaterialPLASTIC PHENOL FORMALDEHYDE (PMO) OVERALL
Pressure Angle14.5000 DEGREES
Bore StyleW/COUNTERBORE COUNTERBORE FIRST END
Pitch Diameter1.7020 INCHES NOMINAL IN
Style DesignatorHUBLESS
Face Nominal Width0.250 INCHES IN
Counterbore Nominal Depth0.062 INCHES COUNTERBORE FIRST END IN
Body StylePLAIN, SOLID
Mounting Hole Type and Quantity3 PLAIN AXIALLY THROUGH BODY FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5330-00-171-396570815 INTERCHANGEABLE
Retainer,packing
Hoffman/new Yorker, Inc.
5330-00-580-5327110-1/4 INTERCHANGEABLE
Packing with Retainer
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
5935-01-139-0916 INTERCHANGEABLE
Connector,receptacle,electrical
3040-01-173-401670815 INTERCHANGEABLE
Head,cylinder
Texas Hydraulics, Inc.
Cross-Reference Index
Part NumberManufacturer
70815 PRIMARY Telemechanics Inc (USA)
70815 At and T Corp (USA)
Related Parts
5330-00-171-3965INTERCHANGEABLE
RETAINER,PACKING
70815
5330-00-580-5327INTERCHANGEABLE
PACKING WITH RETAINER
110-1/4
5935-01-139-0916INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
3040-01-173-4016INTERCHANGEABLE
HEAD,CYLINDER
70815

Frequently Asked Questions

What is NSN 3020-00-223-8214?

NSN 3020-00-223-8214 is a Gear,helical, manufactured by Telemechanics Inc, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-223-8214?

NSN 3020-00-223-8214 has 2 cross-referenced part numbers: 70815 (Telemechanics Inc), 70815 (At and T Corp).

What NSN replaces 3020-00-223-8214?

There are 4 known substitutes for 3020-00-223-8214: 5330-00-171-3965, 5330-00-580-5327, 5935-01-139-0916 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 70815?

Key specifications for 70815: Teeth Quantity: 40; Attachment Method: MOUNTING HOLE; Nominal Outside Diameter: 1.7790 INCHES IN; Tooth Direction: LEFT. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-223-8214 still in active supply?

NSN 3020-00-223-8214 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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