PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4121Ram,hydraulic

Bosch Automotive Service Solutions Inc. · NSN 4320-00-542-3189 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-542-3189 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-542-3189. Primary manufacturer part number: 4121.
Features
  • Ram,hydraulic — FSC 4320
  • Screw Thread Quantity Per Inch: 18.000
  • Capacity: 30.0 TONS
  • Screw Thread Series Designator: NPT
  • Carrying Handle: NOT INCLUDED
  • Extended Height: 10.812 INCHES NOMINAL IN
  • Overall Diameter: 7.500 INCHES NOMINAL IN
  • Plunger Diameter: 2.000 INCHES NOMINAL IN
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ram,hydraulic, cataloged under National Stock Number 4320-00-542-3189, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Bosch Automotive Service Solutions Inc.. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-542-3189
Primary Part Number4121
Item NameRam,hydraulic
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerBosch Automotive Service Solutions Inc.
StatusACTIVE
Screw Thread Quantity Per Inch18.000
Capacity30.0 TONS
Screw Thread Series DesignatorNPT
Carrying HandleNOT INCLUDED
Extended Height10.812 INCHES NOMINAL IN
Overall Diameter7.500 INCHES NOMINAL IN
Plunger Diameter2.000 INCHES NOMINAL IN
Retracted Height8.312 INCHES NOMINAL IN
Screw Thread Diameter0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-067-0623412 INTERCHANGEABLE
Connector,plug,electrical
Pauluhn Electric Manufacturing, Llp Dba Pauluhn Electric
5950-00-219-86814121 INTERCHANGEABLE
Transformer,power
Spang & Company Dba Magnetics Division
3120-00-339-3202 INTERCHANGEABLE
Bearing,sleeve
4320-00-353-5584 INTERCHANGEABLE
Impeller,pump,centrifugal
4730-00-478-2634D2446 45 ELBOW NPS 1/2 PVCI INTERCHANGEABLE
Elbow,pipe
American Society for Testing and Materials Dba Astm International
3417-00-548-3869 INTERCHANGEABLE
Type,copy
5342-00-689-7215412-1 INTERCHANGEABLE
Plug
Niagara Plastics L.l.c.
4210-00-806-6094 INTERCHANGEABLE
No Item Name Available
6625-00-899-806934605 INTERCHANGEABLE
Meter,special Scale
Cec Vibration Products, Llc Dba Cec Vibrations Products
5310-00-912-0466 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
4121 Bosch Automotive Service Solutions Inc. (USA)
Y30A Bosch Automotive Service Solutions Inc. (USA)
Related Parts
5935-00-067-0623INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
412
5950-00-219-8681INTERCHANGEABLE
TRANSFORMER,POWER
4121
3120-00-339-3202INTERCHANGEABLE
BEARING,SLEEVE
4320-00-353-5584INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
4730-00-478-2634INTERCHANGEABLE
ELBOW,PIPE
D2446 45 ELBOW NPS 1/2 PVCI
3417-00-548-3869INTERCHANGEABLE
TYPE,COPY
5342-00-689-7215INTERCHANGEABLE
PLUG
412-1
4210-00-806-6094INTERCHANGEABLE
NO ITEM NAME AVAILABLE
6625-00-899-8069INTERCHANGEABLE
METER,SPECIAL SCALE
34605
5310-00-912-0466INTERCHANGEABLE
WASHER,LOCK
5330-00-964-2788INTERCHANGEABLE
GASKET
4121
5305-01-054-2012INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 4320-00-542-3189?

NSN 4320-00-542-3189 is a Ram,hydraulic, manufactured by Bosch Automotive Service Solutions Inc., classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-542-3189?

NSN 4320-00-542-3189 has 2 cross-referenced part numbers: 4121 (Bosch Automotive Service Solutions Inc.), Y30A (Bosch Automotive Service Solutions Inc.).

What NSN replaces 4320-00-542-3189?

There are 12 known substitutes for 4320-00-542-3189: 5935-00-067-0623, 5950-00-219-8681, 3120-00-339-3202 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4121?

Key specifications for 4121: Screw Thread Quantity Per Inch: 18.000; Capacity: 30.0 TONS; Screw Thread Series Designator: NPT; Carrying Handle: NOT INCLUDED. 9 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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