PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

53681Guide,crosshead

Hydro-Test Products, Inc. Dba Hydro-Test Products Inc · NSN 3655-00-065-6625 · FSC 3655 · No Item Name Available
Verified by PartsTable
NSN 3655-00-065-6625 — this item is cataloged by the U.S. Government under National Stock Number 3655-00-065-6625. Primary manufacturer part number: 53681.
Features
  • Guide,crosshead — FSC 3655
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY NO SPECIAL CLEANING REQUIRED
  • 2 verified cross-references
  • Primary manufacturer: Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Guide,crosshead, cataloged under National Stock Number 3655-00-065-6625, is classified within Federal Supply Class 3655 (No Item Name Available) of the Special Industry Machinery group. The primary manufacturer of record is Hydro-Test Products, Inc. Dba Hydro-Test Products Inc. Government technical data includes 1 verified specification, 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3655-00-065-6625
Primary Part Number53681
Item NameGuide,crosshead
FSC / FSG3655 / 36 — No Item Name Available
ManufacturerHydro-Test Products, Inc. Dba Hydro-Test Products Inc
StatusACTIVE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY NO SPECIAL CLEANING REQUIRED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5340-00-119-615453681 INTERCHANGEABLE
Seat,helical Compression Spring
Hamilton Sundstrand Corporation Dba Collins Aerospace
6685-00-628-9303 INTERCHANGEABLE
Thermometer,indicating,capillary
5940-00-836-2459 INTERCHANGEABLE
Terminal,lug
3655-01-206-492053681 INTERCHANGEABLE
Guide,crosshead
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
6150-01-505-378053681-1 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Naval Air Warfare Ctr Aircraft Div
Cross-Reference Index
Part NumberManufacturer
53681 Hydro-Test Products, Inc. Dba Hydro-Test Products Inc (USA)
53681 Fyr-Fyter Co Inc (USA)
Related Parts
5340-00-119-6154INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
53681
6685-00-628-9303INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
5940-00-836-2459INTERCHANGEABLE
TERMINAL,LUG
3655-01-206-4920INTERCHANGEABLE
GUIDE,CROSSHEAD
53681
6150-01-505-3780INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
53681-1

Frequently Asked Questions

What is NSN 3655-00-065-6625?

NSN 3655-00-065-6625 is a Guide,crosshead, manufactured by Hydro-Test Products, Inc. Dba Hydro-Test Products Inc, classified under FSC 3655 (No Item Name Available). Status: active.

What are the part numbers for NSN 3655-00-065-6625?

NSN 3655-00-065-6625 has 2 cross-referenced part numbers: 53681 (Hydro-Test Products, Inc. Dba Hydro-Test Products Inc), 53681 (Fyr-Fyter Co Inc).

What NSN replaces 3655-00-065-6625?

There are 5 known substitutes for 3655-00-065-6625: 5340-00-119-6154, 6685-00-628-9303, 5940-00-836-2459 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 53681?

Key specifications for 53681: Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY NO SPECIAL CLEANING REQUIRED; End Item Identification: CARBON DIOXIDE RECHARGING UNIT SC-5. 2 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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