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Technical Data Sheet
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55898 — PLATE,RETAINING,BEARING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

55898: PLATE,RETAINING,BEARING.

The PLATE,RETAINING,BEARING is a the manufacturer industrial component. Key specifications include magnification_type: FIXED, part_name_assigned_by_controlling_agency: INSPECTION CAMERA. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-655-6603, 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
55898
NSN: 5340-00-655-6603
NIINs: 006556603, 009992237, 017173377
FSC: 5340 — Hardware, Commercial
CAGE: 82423 — KLEINSCHMIDT INC (USA)
SPECIFICATIONS
magnification_typeFIXED
part_name_assigned_by_controlling_agencyINSPECTION CAMERA
NSN5340-00-655-6603
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 55898 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
•
FLANGE WIDTH ACROSS FLATS: 0.312 INCHES NOMINAL IN
•
LENGTH: 1.375 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.640 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
STYLE DESIGNATOR: FLANGED WITH LEFT INTERNAL THREAD
•
THREAD DIRECTION: RIGHT-HAND RIGHT EXTERNAL
TECHNICAL CHARACTERISTICS
FLANGE WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
LENGTH1.375 INCHES NOMINAL IN
FLANGE THICKNESS0.640 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
THREAD LENGTH0.548 INCHES NOMINAL RIGHT EXTERNAL IN
STYLE DESIGNATORFLANGED WITH LEFT INTERNAL THREAD
THREAD DIRECTIONRIGHT-HAND RIGHT EXTERNAL
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
NOMINAL THREAD SIZE0.164 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
NOMINAL THREAD SIZE0.164 INCHES RIGHT EXTERNAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 55898?
55898 is a PLATE,RETAINING,BEARING.
What is the NSN for 55898?
55898 is cataloged in the U.S. Government catalog under NSN 5340-00-655-6603. 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.