PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9X4609O-Ring

Caterpillar Inc Div Caterpillar Defense · NSN 5331-01-548-1301 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-548-1301 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-548-1301. Primary manufacturer part number: 9X4609.
Features
  • O-Ring — FSC 5331
  • 3 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-548-1301, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-548-1301
Primary Part Number9X4609
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-764-108936662 INTERCHANGEABLE
Transformer,audio Frequency
Freed Transformer Co
3455-01-041-502350-10508 4533-7 INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
2920-01-125-597231-607 INTERCHANGEABLE
Switch,engine Starter,electrical
Pollak Joseph Corp
5985-01-219-9496 INTERCHANGEABLE
Antenna Section Twd
4130-01-261-4681 INTERCHANGEABLE
Mounting Kit,compre
6550-01-264-1369231607 INTERCHANGEABLE
Sensitivity Discs,diagnostic
Becton, Dickinson and Company Dba Becton Dickinson & Co
5331-01-283-7472 INTERCHANGEABLE
O-Ring
5210-01-434-9756452-10 INTERCHANGEABLE
Caliper,outside
General Tools Manufacturing Co., Llc.
5120-01-470-721631607 INTERCHANGEABLE
Key,socket Head Screw
Eklind Tool Co
6640-01-691-911031607 INTERCHANGEABLE
Calibration Kit,pipet Volumetric
Restek Corp
Cross-Reference Index
Part NumberManufacturer
31607 Paccar Winch Inc Dba Paccar Winch Division (USA)
9X-4609 Pon Equipment B.v. (NLD)
9X4609 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5950-00-764-1089INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
36662
3455-01-041-5023INTERCHANGEABLE
REAMER,MACHINE
50-10508 4533-7
2920-01-125-5972INTERCHANGEABLE
SWITCH,ENGINE STARTER,ELECTRICAL
31-607
5985-01-219-9496INTERCHANGEABLE
ANTENNA SECTION TWD
4130-01-261-4681INTERCHANGEABLE
MOUNTING KIT,COMPRE
6550-01-264-1369INTERCHANGEABLE
SENSITIVITY DISCS,DIAGNOSTIC
231607
5331-01-283-7472INTERCHANGEABLE
O-RING
5210-01-434-9756INTERCHANGEABLE
CALIPER,OUTSIDE
452-10
5120-01-470-7216INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
31607
6640-01-691-9110INTERCHANGEABLE
CALIBRATION KIT,PIPET VOLUMETRIC
31607

Frequently Asked Questions

What is NSN 5331-01-548-1301?

NSN 5331-01-548-1301 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-548-1301?

NSN 5331-01-548-1301 has 3 cross-referenced part numbers: 31607 (Paccar Winch Inc Dba Paccar Winch Division), 9X-4609 (Pon Equipment B.v.), 9X4609 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5331-01-548-1301?

There are 10 known substitutes for 5331-01-548-1301: 5950-00-764-1089, 3455-01-041-5023, 2920-01-125-5972 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9X4609?

Key specifications for 9X4609: Part Name Assigned by Controlling Agency: O-RING; End Item Identification: 3830-01-538-1421, WINCH ATTACHMENT, SINGLE DRUM, MODEL PA80; Special Features: O-RING IS FOR OIL DRAIN AND LEVEL PLUG;NHA IS WINCH CASE/COVERS. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com