PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

225125Boss Retainer,spring

Bei Sensors & Systems Company, Inc. Dba Bei Duncan · NSN 4310-00-531-7439 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-531-7439 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-531-7439. Primary manufacturer part number: 225125.
Features
  • Boss Retainer,spring — FSC 4310
  • General Characteristics Item Description: ALUMINUM ALLOY 2024 T4,ANODIZE PER MIL-A-8625B TYPE 2 CLASS 1,0.625 IN. DIA O/A,0.125 IN. THK,0.250-28 UNF CLASS 3 THD THROUGH CENTER,APPLICABLE PRESSURE CONTROLLER VACUUM PUMP 27398 225-1-0 IN
  • 2 verified cross-references
  • Primary manufacturer: Bei Sensors & Systems Company, Inc. Dba Bei Duncan
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Boss Retainer,spring, cataloged under National Stock Number 4310-00-531-7439, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Bei Sensors & Systems Company, Inc. Dba Bei Duncan. 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-531-7439
Primary Part Number225125
Item NameBoss Retainer,spring
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerBei Sensors & Systems Company, Inc. Dba Bei Duncan
StatusACTIVE
General Characteristics Item DescriptionALUMINUM ALLOY 2024 T4,ANODIZE PER MIL-A-8625B TYPE 2 CLASS 1,0.625 IN. DIA O/A,0.125 IN. THK,0.250-28 UNF CLASS 3 THD THROUGH CENTER,APPLICABLE PRESSURE CONTROLLER VACUUM PUMP 27398 225-1-0 IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2530-01-008-8758225125N INTERCHANGEABLE
Tank,pressure
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5340-01-622-4938225125 INTERCHANGEABLE
Mount,resilient,utility
Kohler Co.
Cross-Reference Index
Part NumberManufacturer
225125 Bei Sensors & Systems Company, Inc. Dba Bei Duncan (USA)
225125 Bei Sensors & Systems Co. Inc Dba Edcliff Instruments Division (USA)
Related Parts
2530-01-008-8758INTERCHANGEABLE
TANK,PRESSURE
225125N
5340-01-622-4938INTERCHANGEABLE
MOUNT,RESILIENT,UTILITY
225125

Frequently Asked Questions

What is NSN 4310-00-531-7439?

NSN 4310-00-531-7439 is a Boss Retainer,spring, manufactured by Bei Sensors & Systems Company, Inc. Dba Bei Duncan, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-531-7439?

NSN 4310-00-531-7439 has 2 cross-referenced part numbers: 225125 (Bei Sensors & Systems Company, Inc. Dba Bei Duncan), 225125 (Bei Sensors & Systems Co. Inc Dba Edcliff Instruments Division).

What NSN replaces 4310-00-531-7439?

There are 2 known substitutes for 4310-00-531-7439: 2530-01-008-8758, 5340-01-622-4938. Verify interchangeability with system specifications before substitution.

What are the specifications of 225125?

Key specifications for 225125: General Characteristics Item Description: ALUMINUM ALLOY 2024 T4,ANODIZE PER MIL-A-8625B TYPE 2 CLASS 1,0.625 IN. DIA O/A,0.125 IN. THK,0.250-28 UNF CLASS 3 THD THROUGH CENTER,APPLICABLE PRESSURE CONTROLLER VACUUM PUMP 27398 225-1-0 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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