PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55504Cylinder Assembly,actuating,line

Best Metal Products Company, Inc. · NSN 3040-01-372-0066 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-372-0066 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-372-0066. Primary manufacturer part number: 55504.
Features
  • Cylinder Assembly,actuating,line — FSC 3040
  • 4 verified cross-references
  • Primary manufacturer: Best Metal Products Company, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-372-0066, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Best Metal Products Company, Inc.. This item has 4 commercial cross-references from 4 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
NSN3040-01-372-0066
Primary Part Number55504
Item NameCylinder Assembly,actuating,line
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerBest Metal Products Company, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-156-4682 INTERCHANGEABLE
Bearing,ball,annular
1650-00-516-4515695481-3 INTERCHANGEABLE
Filter Element,fluid
Lockheed Martin Corp
3040-00-600-2924SM-B-187085 INTERCHANGEABLE
Connecting Link,rigid
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
55504 Magline Inc (USA)
55504 DC Hydraulics, Inc (USA)
55504 PRIMARY Best Metal Products Company, Inc. (USA)
55504 PRIMARY Dana Corp Mobile Fluid Products Div (USA)
Related Parts
3110-00-156-4682INTERCHANGEABLE
BEARING,BALL,ANNULAR
1650-00-516-4515INTERCHANGEABLE
FILTER ELEMENT,FLUID
695481-3
3040-00-600-2924INTERCHANGEABLE
CONNECTING LINK,RIGID
SM-B-187085

Frequently Asked Questions

What is NSN 3040-01-372-0066?

NSN 3040-01-372-0066 is a Cylinder Assembly,actuating,line, manufactured by Best Metal Products Company, Inc., classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-372-0066?

NSN 3040-01-372-0066 has 4 cross-referenced part numbers: 55504 (Magline Inc), 55504 (DC Hydraulics, Inc), 55504 (Best Metal Products Company, Inc.), 55504 (Dana Corp Mobile Fluid Products Div).

What NSN replaces 3040-01-372-0066?

There are 3 known substitutes for 3040-01-372-0066: 3110-00-156-4682, 1650-00-516-4515, 3040-00-600-2924. Verify interchangeability with system specifications before substitution.

What are the specifications of 55504?

Key specifications for 55504: End Item Identification: 3990-01-121-7758. 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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