PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1F4520Retainer,spring

Caterpillar Inc Div Caterpillar Defense · NSN 4310-00-431-1652 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-431-1652 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-431-1652. Primary manufacturer part number: 1F4520.
Features
  • Retainer,spring — FSC 4310
  • 5 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Retainer,spring, cataloged under National Stock Number 4310-00-431-1652, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,spring
FSC / FSG4310 — No Item Name Available (FSG 43)
ManufacturersCaterpillar Inc Div Caterpillar Defense (CAGE 11083); Compair Kellogg Div of Robertshaw Controls Co (CAGE 53239); Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (CAGE 9F512); Robertshaw Tennessee/cookeville Automotive (CAGE 80439)
Technical Specifications
ParameterValue
NSN4310-00-431-1652
Primary Part Number1F4520
Item NameRetainer,spring
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5340-00-117-567712528 INTERCHANGEABLE
Caster,rigid
Aerol Llc
5330-00-154-05591280858 INTERCHANGEABLE
Seal,plain Encased
Naval Ship Systems Command
5133-00-247-2751 INTERCHANGEABLE
Drill,twist
5330-00-285-6385125-28 INTERCHANGEABLE
Seal,plain Encased
Dresser Industries Inc Leroi Div
6530-00-410-2889125-28 INTERCHANGEABLE
Cover,mattress,orth
Stryker Corporation Div Use for Open Payments Only
3610-00-794-223312528 INTERCHANGEABLE
Screw,carrier Loop
Smyth Mfg Co Sub of the Beacon Group
5330-01-396-8142 INTERCHANGEABLE
Gasket
5340-01-498-6277 INTERCHANGEABLE
Fitting,qd,female
5920-01-550-261812528 INTERCHANGEABLE
Fuse Link,electrical
Gta Marine Dba Gta Marine
Cross-Reference Index
Part NumberManufacturer
1F4520 Caterpillar Inc Div Caterpillar Defense (USA)
12528A Compair Kellogg Div of Robertshaw Controls Co (USA)
12528A Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA)
12528 Compair Kellogg Div of Robertshaw Controls Co (USA)
12528A Robertshaw Tennessee/cookeville Automotive (USA)
Related Parts
5340-00-117-5677INTERCHANGEABLE
CASTER,RIGID
12528
5330-00-154-0559INTERCHANGEABLE
SEAL,PLAIN ENCASED
1280858
5133-00-247-2751INTERCHANGEABLE
DRILL,TWIST
5330-00-285-6385INTERCHANGEABLE
SEAL,PLAIN ENCASED
125-28
6530-00-410-2889INTERCHANGEABLE
COVER,MATTRESS,ORTH
125-28
3610-00-794-2233INTERCHANGEABLE
SCREW,CARRIER LOOP
12528
5330-01-396-8142INTERCHANGEABLE
GASKET
5340-01-498-6277INTERCHANGEABLE
FITTING,QD,FEMALE
5920-01-550-2618INTERCHANGEABLE
FUSE LINK,ELECTRICAL
12528

Frequently Asked Questions

What is NSN 4310-00-431-1652?

NSN 4310-00-431-1652 is a Retainer,spring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-431-1652?

NSN 4310-00-431-1652 has 5 cross-referenced part numbers: 1F4520 (Caterpillar Inc Div Caterpillar Defense), 12528A (Compair Kellogg Div of Robertshaw Controls Co), 12528A (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division), 12528 (Compair Kellogg Div of Robertshaw Controls Co), 12528A (Robertshaw Tennessee/cookeville Automotive).

What NSN replaces 4310-00-431-1652?

There are 9 known substitutes for 4310-00-431-1652: 5340-00-117-5677, 5330-00-154-0559, 5133-00-247-2751 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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