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6558491-1 — CASTER,SWIVEL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6558491-1: CASTER,SWIVEL.

The CASTER,SWIVEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1045 FRAME, wheel_type: BUILT UP, plate_style: RECTANGULAR, tread_width: 2.000 INCHES NOMINAL IN, wheel_diameter: 4.000 INCHES NOMINAL IN, effective_height: 5.620 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-379-8087, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
6558491-1
NSN: 5340-01-379-8087
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 1045 FRAME
wheel_typeBUILT UP
plate_styleRECTANGULAR
tread_width2.000 INCHES NOMINAL IN
wheel_diameter4.000 INCHES NOMINAL IN
wheel_quantity1
effective_height5.620 INCHES NOMINAL IN
special_featuresPLATE ACCOMADATES FOUR SLOTS WITH TWO 0.500 INCH DIA MOUTING HOLES EACH IN
style_designatorSWIVEL OFFSET
caster_plate_width4.500 INCHES NOMINAL IN
caster_plate_length6.250 INCHES NOMINAL IN
safe_operating_load_rating700.0 POUNDS NOMINAL LBS
NSN5340-01-379-8087
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6558491-1 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
PLATE STYLE: RECTANGULAR
•
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH: 4.937 INCHES NOMINAL IN
•
CENTER TO CENTER MAJOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH: 5.250 INCHES NOMINAL IN
•
TREAD WIDTH: 2.000 INCHES NOMINAL IN
•
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG WIDTH: 2.437 INCHES NOMINAL IN
•
WHEEL TYPE: BUILT UP
•
STYLE DESIGNATOR: SWIVEL OFFSET
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1045 ASSN STD SINGLE MATERIAL RESPONSE FRAME
TECHNICAL CHARACTERISTICS
PLATE STYLERECTANGULAR
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH4.937 INCHES NOMINAL IN
CENTER TO CENTER MAJOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH5.250 INCHES NOMINAL IN
TREAD WIDTH2.000 INCHES NOMINAL IN
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG WIDTH2.437 INCHES NOMINAL IN
WHEEL TYPEBUILT UP
STYLE DESIGNATORSWIVEL OFFSET
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1045 ASSN STD SINGLE MATERIAL RESPONSE FRAME
CASTER PLATE WIDTH4.500 INCHES NOMINAL IN
CASTER PLATE LENGTH6.250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
72-PD-04201-SC-72Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6558491-1?
6558491-1 is a CASTER,SWIVEL.
What parts can replace 6558491-1?
There is 1 known substitute for 6558491-1: 72-PD-04201-SC-72. Substitute compatibility should be verified for your specific system.
What is the NSN for 6558491-1?
6558491-1 is cataloged in the U.S. Government catalog under NSN 5340-01-379-8087. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.