PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

305121Teletypewriter Subassembly

Telemechanics Inc · NSN 5815-00-981-7177 · FSC 5815 · No Item Name Available
Verified by PartsTable
NSN 5815-00-981-7177 — this item is cataloged by the U.S. Government under National Stock Number 5815-00-981-7177. Primary manufacturer part number: 305121.
Features
  • Teletypewriter Subassembly — FSC 5815
  • Overall Diameter: 0.875 INCHES NOMINAL IN
  • Component Type and Quantity: 1 SHAFT AND 1 BUSHING
  • 2 verified cross-references
  • Primary manufacturer: Telemechanics Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Teletypewriter Subassembly, cataloged under National Stock Number 5815-00-981-7177, is classified within Federal Supply Class 5815 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Telemechanics Inc. Government technical data includes 2 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: Active.

Technical Specifications
ParameterValue
NSN5815-00-981-7177
Primary Part Number305121
Item NameTeletypewriter Subassembly
FSC / FSG5815 / 58 — No Item Name Available
ManufacturerTelemechanics Inc
StatusACTIVE
Overall Diameter0.875 INCHES NOMINAL IN
Component Type and Quantity1 SHAFT AND 1 BUSHING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1620-00-587-2105305121 INTERCHANGEABLE
Plunger Orifice
Vibratech Inc
5950-00-615-04131880777 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4820-01-275-9060BN-2.0/12-52-L10 PC5 3IN INTERCHANGEABLE
Stem,fluid Valve
Universal Industrial Products Co Div of Core Industries Inc
Cross-Reference Index
Part NumberManufacturer
305121 PRIMARY Telemechanics Inc (USA)
305121 American Telephone and Telegraph Co (USA)
Related Parts
1620-00-587-2105INTERCHANGEABLE
PLUNGER ORIFICE
305121
5950-00-615-0413INTERCHANGEABLE
TRANSFORMER,POWER
1880777
4820-01-275-9060INTERCHANGEABLE
STEM,FLUID VALVE
BN-2.0/12-52-L10 PC5 3IN

Frequently Asked Questions

What is NSN 5815-00-981-7177?

NSN 5815-00-981-7177 is a Teletypewriter Subassembly, manufactured by Telemechanics Inc, classified under FSC 5815 (No Item Name Available). Status: active.

What are the part numbers for NSN 5815-00-981-7177?

NSN 5815-00-981-7177 has 2 cross-referenced part numbers: 305121 (Telemechanics Inc), 305121 (American Telephone and Telegraph Co).

What NSN replaces 5815-00-981-7177?

There are 3 known substitutes for 5815-00-981-7177: 1620-00-587-2105, 5950-00-615-0413, 4820-01-275-9060. Verify interchangeability with system specifications before substitution.

What are the specifications of 305121?

Key specifications for 305121: Overall Diameter: 0.875 INCHES NOMINAL IN; Overall Length: 4.003 INCHES NOMINAL IN; Component Type and Quantity: 1 SHAFT AND 1 BUSHING; End Item Identification: TELETYPEWRITER SET MODEL 37ASR. 4 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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