PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

125301Push Rod,vane,pump

Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer · NSN 4320-01-122-5891 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-122-5891 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-122-5891. Primary manufacturer part number: 125301.
Features
  • Push Rod,vane,pump — FSC 4320
  • 1 verified cross-reference
  • Primary manufacturer: Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Push Rod,vane,pump, cataloged under National Stock Number 4320-01-122-5891, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN4320-01-122-5891
Primary Part Number125301
Item NamePush Rod,vane,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5910-01-044-8564 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5340-01-393-48903020000-5614 INTERCHANGEABLE
Fastener,cylinder,spring Loaded
Illinois Tool Works Inc Fastex Div
4820-01-462-42971253-01 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
125301 PRIMARY Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
Related Parts
5910-01-044-8564INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5340-01-393-4890INTERCHANGEABLE
FASTENER,CYLINDER,SPRING LOADED
3020000-5614
4820-01-462-4297INTERCHANGEABLE
DISK,VALVE
1253-01

Frequently Asked Questions

What is NSN 4320-01-122-5891?

NSN 4320-01-122-5891 is a Push Rod,vane,pump, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-122-5891?

NSN 4320-01-122-5891 has 1 cross-referenced part number: 125301 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).

What NSN replaces 4320-01-122-5891?

There are 3 known substitutes for 4320-01-122-5891: 5910-01-044-8564, 5340-01-393-4890, 4820-01-462-4297. Verify interchangeability with system specifications before substitution.

What are the specifications of 125301?

Key specifications for 125301: End Item Identification: BLACKMER PUMP,ROTARY,MODEL SMP 2-1/2 IN. IN. 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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