PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74154Gear,helical

Telemechanics Inc · NSN 3020-00-223-8213 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-223-8213 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-223-8213. Primary manufacturer part number: 74154.
Features
  • Gear,helical — FSC 3020
  • Helix Angle: 45.0000 DEGREES
  • Mounting Hole Nominal Diameter: 0.312 INCHES AXIALLY THROUGH BODY FIRST END IN
  • Pitch Diameter: 2.0540 INCHES NOMINAL IN
  • Bore Nominal Diameter: 0.7500 INCHES BOTH ENDS IN
  • Face Nominal Width: 0.312 INCHES IN
  • Pressure Angle: 13.0000 DEGREES
  • Teeth Quantity: 56
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 3020-00-223-8213, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-223-8213
Primary Part Number74154
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerTelemechanics Inc
StatusCANCELLED
Helix Angle45.0000 DEGREES
Mounting Hole Nominal Diameter0.312 INCHES AXIALLY THROUGH BODY FIRST END IN
Pitch Diameter2.0540 INCHES NOMINAL IN
Bore Nominal Diameter0.7500 INCHES BOTH ENDS IN
Face Nominal Width0.312 INCHES IN
Pressure Angle13.0000 DEGREES
Teeth Quantity56
Attachment MethodMOUNTING HOLE
Tooth FormSTANDARD
Tooth DirectionLEFT
Body StylePLAIN, SOLID
Mounting Hole Type and Quantity3 PLAIN AXIALLY THROUGH BODY FIRST END
Style DesignatorHUBLESS
Nominal Outside Diameter2.1250 INCHES IN
Teeth TypeSINGLE HELIX
Bore StylePLAIN BOTH ENDS
MaterialPLASTIC PHENOL FORMALDEHYDE (PMO) OVERALL
Bolt Hole Circle Nominal Diameter1.062 INCHES AXIALLY THROUGH BODY FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5962-01-064-9590 INTERCHANGEABLE
Microcircuit,digital
4820-01-310-4731741-5-4 INTERCHANGEABLE
Seat,valve
Flowserve Corporation Div Flowserve Us Inc
4310-01-448-16775HCD-10-M551MX INTERCHANGEABLE
Compressor Unit,reciprocating
Gast Mfg Corp
Cross-Reference Index
Part NumberManufacturer
74154 PRIMARY Telemechanics Inc (USA)
74154 At and T Corp (USA)
Related Parts
5962-01-064-9590INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
4820-01-310-4731INTERCHANGEABLE
SEAT,VALVE
741-5-4
4310-01-448-1677INTERCHANGEABLE
COMPRESSOR UNIT,RECIPROCATING
5HCD-10-M551MX

Frequently Asked Questions

What is NSN 3020-00-223-8213?

NSN 3020-00-223-8213 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 3020-00-223-8213?

NSN 3020-00-223-8213 has 2 cross-referenced part numbers: 74154 (Telemechanics Inc), 74154 (At and T Corp).

What NSN replaces 3020-00-223-8213?

There are 3 known substitutes for 3020-00-223-8213: 5962-01-064-9590, 4820-01-310-4731, 4310-01-448-1677. Verify interchangeability with system specifications before substitution.

What are the specifications of 74154?

Key specifications for 74154: Helix Angle: 45.0000 DEGREES; Mounting Hole Nominal Diameter: 0.312 INCHES AXIALLY THROUGH BODY FIRST END IN; Pitch Diameter: 2.0540 INCHES NOMINAL IN; Bore Nominal Diameter: 0.7500 INCHES BOTH ENDS IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-223-8213 still in active supply?

NSN 3020-00-223-8213 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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