PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PA-133Pump Unit,reciprocating

Enerpac Tool Group Corp · NSN 4320-00-055-2639 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-055-2639 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-055-2639. Primary manufacturer part number: PA-133.
Features
  • Pump Unit,reciprocating — FSC 4320
  • Discharge Connection Quantity: 1
  • Discharge Connection Type: THREADED INTERNAL
  • Prime Mover Type: PNEUMATIC MOTOR
  • Maximum Discharge Flow Rate: 4.9 GALLONS PER MINUTE
  • Pump Quantity: 1
  • Pumping Element Type: PISTON
  • Pump Reciprocating Design: SINGLE ACTING
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,reciprocating, cataloged under National Stock Number 4320-00-055-2639, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Enerpac Tool Group Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, 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
NSN4320-00-055-2639
Primary Part NumberPA-133
Item NamePump Unit,reciprocating
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerEnerpac Tool Group Corp
StatusACTIVE
Discharge Connection Quantity1
Discharge Connection TypeTHREADED INTERNAL
Prime Mover TypePNEUMATIC MOTOR
Maximum Discharge Flow Rate4.9 GALLONS PER MINUTE
Pump Quantity1
Pumping Element TypePISTON
Pump Reciprocating DesignSINGLE ACTING
Reciprocating Stroke TypeFIXED
Operating Speed at Rated Capacity100.0 STROKES PER MINUTE
Operating Pressure100.0 POUNDS PER SQUARE INCH GAUGE (PSIG) NOMINAL POWER DRIVE LBS
Cylinder Quantity1
Media for Which DesignedHYDROCARBON FUELS AND OILS
Prime Mover Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-317-4593 INTERCHANGEABLE
Disk,valve
7021-00-489-6748S202 INTERCHANGEABLE
Module,computer
Compaq Federal Llc
5365-00-597-6950Y13 INTERCHANGEABLE
Shim
Pacific Marine Schwabacher Inc
5340-00-673-377301122R INTERCHANGEABLE
Key Blank
Ilco Unican Corp Dba Wolf Sales
5945-00-854-7095MKF0-2-5K INTERCHANGEABLE
Relay,electromagnetic
G General Electro-Components Inc
2940-00-949-424151874 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
3455-01-045-794116220 INTERCHANGEABLE
Cutter,milling,end
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5998-01-190-6548S-202 INTERCHANGEABLE
Retainer-Ejector,electrical Card
Schroff Inc
5998-01-199-9117 INTERCHANGEABLE
Retainer-Ejector,electrical Card
5998-01-271-421283023-03W INTERCHANGEABLE
Retainer-Ejector,electrical Card
Schroff Inc
Cross-Reference Index
Part NumberManufacturer
65428 Enerpac Tool Group Corp (USA)
4020 Bosch Automotive Service Solutions Inc. (USA)
PA-133 PRIMARY Enerpac Tool Group Corp (USA)
S202 Applied Power Inc Power Packer (USA)
OHS65428 Ohio Hydraulic Equipment Llc (USA)
Y-13 Bosch Automotive Service Solutions Inc. (USA)
65428 Mcneil Ohio Corp (USA)
Related Parts
4820-00-317-4593INTERCHANGEABLE
DISK,VALVE
7021-00-489-6748INTERCHANGEABLE
MODULE,COMPUTER
S202
5365-00-597-6950INTERCHANGEABLE
SHIM
Y13
5340-00-673-3773INTERCHANGEABLE
KEY BLANK
01122R
5945-00-854-7095INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
MKF0-2-5K
2940-00-949-4241INTERCHANGEABLE
FILTER ELEMENT,FLUID
51874
3455-01-045-7941INTERCHANGEABLE
CUTTER,MILLING,END
16220
5998-01-190-6548INTERCHANGEABLE
RETAINER-EJECTOR,ELECTRICAL CARD
S-202
5998-01-199-9117INTERCHANGEABLE
RETAINER-EJECTOR,ELECTRICAL CARD
5998-01-271-4212INTERCHANGEABLE
RETAINER-EJECTOR,ELECTRICAL CARD
83023-03W
5998-01-300-7834INTERCHANGEABLE
RETAINER-EJECTOR,ELECTRICAL CARD
83023-03Y
5998-01-310-2113INTERCHANGEABLE
RETAINER-EJECTOR,ELECTRICAL CARD
83023-03R

Frequently Asked Questions

What is NSN 4320-00-055-2639?

NSN 4320-00-055-2639 is a Pump Unit,reciprocating, manufactured by Enerpac Tool Group Corp, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-055-2639?

NSN 4320-00-055-2639 has 7 cross-referenced part numbers: 65428 (Enerpac Tool Group Corp), 4020 (Bosch Automotive Service Solutions Inc.), PA-133 (Enerpac Tool Group Corp), S202 (Applied Power Inc Power Packer), OHS65428 (Ohio Hydraulic Equipment Llc) and 2 more.

What NSN replaces 4320-00-055-2639?

There are 12 known substitutes for 4320-00-055-2639: 4820-00-317-4593, 7021-00-489-6748, 5365-00-597-6950 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of PA-133?

Key specifications for PA-133: Discharge Connection Quantity: 1; Discharge Connection Type: THREADED INTERNAL; Prime Mover Type: PNEUMATIC MOTOR; Maximum Discharge Flow Rate: 4.9 GALLONS PER MINUTE. 14 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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