PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55780Regulator Assy,circ

Air Techniques, Inc. · NSN 6515-01-421-5657 · FSC 6515 · No Item Name Available
Verified by PartsTable
NSN 6515-01-421-5657 — this item is cataloged by the U.S. Government under National Stock Number 6515-01-421-5657. Primary manufacturer part number: 55780.
Features
  • Regulator Assy,circ — FSC 6515
  • 3 verified cross-references
  • Primary manufacturer: Air Techniques, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Regulator Assy,circ, cataloged under National Stock Number 6515-01-421-5657, is classified within Federal Supply Class 6515 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Air Techniques, Inc.. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6515-01-421-5657
Primary Part Number55780
Item NameRegulator Assy,circ
FSC / FSG6515 / 65 — No Item Name Available
ManufacturerAir Techniques, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 6
2920-00-075-743255780 INTERCHANGEABLE
Rotor,generator
Prestolite Electric Inc
5930-00-430-0074762-904 INTERCHANGEABLE
Switch Subassembly
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
9540-00-452-2478 INTERCHANGEABLE
Beam,structural
9540-00-528-7072 INTERCHANGEABLE
Beam,structural
6625-00-659-692055780 INTERCHANGEABLE
Ammeter
Mitsubishi Caterpillar Forklift America, Inc
4820-00-940-7941 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
55780 PRIMARY Air Techniques, Inc. (USA)
LLH409178 Naval Medical Material Support Command Detachment (USA)
NAVY 1993 3279 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
Related Parts
2920-00-075-7432INTERCHANGEABLE
ROTOR,GENERATOR
55780
5930-00-430-0074INTERCHANGEABLE
SWITCH SUBASSEMBLY
762-904
9540-00-452-2478INTERCHANGEABLE
BEAM,STRUCTURAL
9540-00-528-7072INTERCHANGEABLE
BEAM,STRUCTURAL
6625-00-659-6920INTERCHANGEABLE
AMMETER
55780
4820-00-940-7941INTERCHANGEABLE
VALVE,CHECK

Frequently Asked Questions

What is NSN 6515-01-421-5657?

NSN 6515-01-421-5657 is a Regulator Assy,circ, manufactured by Air Techniques, Inc., classified under FSC 6515 (No Item Name Available). Status: active.

What are the part numbers for NSN 6515-01-421-5657?

NSN 6515-01-421-5657 has 3 cross-referenced part numbers: 55780 (Air Techniques, Inc.), LLH409178 (Naval Medical Material Support Command Detachment), NAVY 1993 3279 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia).

What NSN replaces 6515-01-421-5657?

There are 6 known substitutes for 6515-01-421-5657: 2920-00-075-7432, 5930-00-430-0074, 9540-00-452-2478 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55780?

Key specifications for 55780: Part Name Assigned by Controlling Agency: REGULATOR ASSY CIRC. 1 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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