PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

102BPump Unit,rotary

Weldon Pump Llc · NSN 4320-00-541-7081 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-541-7081 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-541-7081. Primary manufacturer part number: 102B.
Features
  • Pump Unit,rotary — FSC 4320
  • Prime Mover Quantity: 1
  • Environmental Protection: DUST-IGNITION PROOF
  • Intake Connection Thread Size and Series/type Designator: 0.438-20 UNF
  • Intake Connection Quantity: 1
  • Prime Mover Cooling Medium: AIR
  • Voltage in Volts: 24.0
  • Intake Connection Type: THREADED INTERNAL
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,rotary, cataloged under National Stock Number 4320-00-541-7081, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Weldon Pump Llc. Government technical data includes 16 verified specifications, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-541-7081
Primary Part Number102B
Item NamePump Unit,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerWeldon Pump Llc
StatusACTIVE
Prime Mover Quantity1
Environmental ProtectionDUST-IGNITION PROOF
Intake Connection Thread Size and Series/type Designator0.438-20 UNF
Intake Connection Quantity1
Prime Mover Cooling MediumAIR
Voltage in Volts24.0
Intake Connection TypeTHREADED INTERNAL
Discharge Connection Thread Size and Series/type Designator0.438-20 UNF
Current TypeDC
Discharge Connection Quantity2
Inclosure TypeFULLY INCLOSED
Prime Mover TypeELECTRIC MOTOR
Pump Quantity1
Discharge Pressure0.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING SILICA FUME
Pumping Element Operating PositionHORIZONTAL
Discharge Connection TypeTHREADED INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5365-00-187-7493102B INTERCHANGEABLE
Spacer,ring
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
5360-00-200-96411001 INTERCHANGEABLE
Spring,helical,compression
Collins Engine Nozzles, Inc
4730-00-254-63742205P-2 INTERCHANGEABLE
Cross,pipe
Parker-Hannifin Corp Div Fluid System Connector Division
5975-00-267-2768 INTERCHANGEABLE
Fanning Strip
3030-00-529-0381 INTERCHANGEABLE
Belt,v
2915-00-594-8628102B INTERCHANGEABLE
Pump,submerged,aircraft
Curtiss-Wright Controls, Inc. Div Actuation Division
5999-00-606-8709 INTERCHANGEABLE
Retainer,electrical Shield
5961-00-826-5385472-0143-001 INTERCHANGEABLE
Transistor
The Boeing Company Div Legacy Boeing Hb1
5355-00-989-426970-3BL2G INTERCHANGEABLE
Knob
Raytheon Company Dba Raytheon Co
6532-01-012-4441 INTERCHANGEABLE
Hood,operating,surgical
Cross-Reference Index
Part NumberManufacturer
102B Weldon Tool Co the (USA)
102B PRIMARY Weldon Pump Llc (USA)
Related Parts
5365-00-187-7493INTERCHANGEABLE
SPACER,RING
102B
5360-00-200-9641INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1001
4730-00-254-6374INTERCHANGEABLE
CROSS,PIPE
2205P-2
5975-00-267-2768INTERCHANGEABLE
FANNING STRIP
3030-00-529-0381INTERCHANGEABLE
BELT,V
2915-00-594-8628INTERCHANGEABLE
PUMP,SUBMERGED,AIRCRAFT
102B
5999-00-606-8709INTERCHANGEABLE
RETAINER,ELECTRICAL SHIELD
5961-00-826-5385INTERCHANGEABLE
TRANSISTOR
472-0143-001
5355-00-989-4269INTERCHANGEABLE
KNOB
70-3BL2G
6532-01-012-4441INTERCHANGEABLE
HOOD,OPERATING,SURGICAL
4820-01-274-3675INTERCHANGEABLE
STEM,FLUID VALVE
4820-01-274-8211INTERCHANGEABLE
SEAT,VALVE

Frequently Asked Questions

What is NSN 4320-00-541-7081?

NSN 4320-00-541-7081 is a Pump Unit,rotary, manufactured by Weldon Pump Llc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-541-7081?

NSN 4320-00-541-7081 has 2 cross-referenced part numbers: 102B (Weldon Tool Co the), 102B (Weldon Pump Llc).

What NSN replaces 4320-00-541-7081?

There are 12 known substitutes for 4320-00-541-7081: 5365-00-187-7493, 5360-00-200-9641, 4730-00-254-6374 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 102B?

Key specifications for 102B: Prime Mover Quantity: 1; Environmental Protection: DUST-IGNITION PROOF; Intake Connection Thread Size and Series/type Designator: 0.438-20 UNF; Intake Connection Quantity: 1. 16 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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