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H6998-2 — CASTER,SWIVEL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H6998-2: CASTER,SWIVEL.

The CASTER,SWIVEL is a the manufacturer industrial component. Key specifications include material: PLASTIC PHENOLIC TIRE, wheel_type: SOLID, plate_style: SQUARE, tread_width: 2.500 INCHES NOMINAL IN, wheel_diameter: 6.000 INCHES NOMINAL IN, effective_height: 7.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-433-1882, 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
H6998-2
NSN: 5340-01-433-1882
FSC: 5340 — Hardware, Commercial
CAGE: 06004 — STEWART-WARNER BASSICK CORP (USA)
SPECIFICATIONS
materialPLASTIC PHENOLIC TIRE
wheel_typeSOLID
plate_styleSQUARE
tread_width2.500 INCHES NOMINAL IN
wheel_diameter6.000 INCHES NOMINAL IN
wheel_quantity1
effective_height7.500 INCHES MAXIMUM IN
style_designatorSWIVEL OFFSET
caster_plate_width5.400 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
caster_plate_length6.900 INCHES MINIMUM AND 7.500 INCHES MAXIMUM IN
caster_plate_mounting_slot_width0.563 INCHES NOMINAL IN
center_to_center_major_distance_between_mounting_slots_along_width4.125 INCHES NOMINAL IN
NSN5340-01-433-1882
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H6998-2 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: SQUARE
•
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH: 5.250 INCHES NOMINAL IN
•
CENTER TO CENTER MAJOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH: 6.125 INCHES NOMINAL IN
•
TREAD WIDTH: 2.500 INCHES NOMINAL IN
•
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG WIDTH: 3.375 INCHES NOMINAL IN
•
WHEEL TYPE: SOLID
•
STYLE DESIGNATOR: SWIVEL OFFSET
•
CASTER PLATE MOUNTING SLOT WIDTH: 0.563 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
PLATE STYLESQUARE
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH5.250 INCHES NOMINAL IN
CENTER TO CENTER MAJOR DISTANCE BETWEEN MOUNTING SLOTS ALONG LENGTH6.125 INCHES NOMINAL IN
TREAD WIDTH2.500 INCHES NOMINAL IN
CENTER TO CENTER MINOR DISTANCE BETWEEN MOUNTING SLOTS ALONG WIDTH3.375 INCHES NOMINAL IN
WHEEL TYPESOLID
STYLE DESIGNATORSWIVEL OFFSET
CASTER PLATE MOUNTING SLOT WIDTH0.563 INCHES NOMINAL IN
CASTER PLATE WIDTH5.400 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
CASTER PLATE LENGTH6.900 INCHES MINIMUM AND 7.500 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 6
6-147-HBR-SPReference document
Same NSN cross-reference
Reference document — Secondary reference
AA55619-6SCSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
M929-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS24380-6SCReference document
Same NSN cross-reference
Reference document — Secondary reference
A-A-55619Reference document
Same NSN cross-reference
Reference document — Identification reference
M1429-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H6998-2?
H6998-2 is a CASTER,SWIVEL.
What parts can replace H6998-2?
There are 6 known substitutes for H6998-2: 6-147-HBR-SP, AA55619-6SC, M929-6 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H6998-2?
H6998-2 is cataloged in the U.S. Government catalog under NSN 5340-01-433-1882. 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.