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581998-3 — BEARING,SLEEVE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

581998-3: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: CARBON GRAPHITE OVERALL, flange_width: 0.3900 INCHES MINIMUM AND 0.3940 INCHES MAXIMUM IN, overall_length: 0.5970 INCHES MINIMUM AND 0.6000 INCHES MAXIMUM IN, body_inside_diameter: 0.5016 INCHES MINIMUM AND 0.5019 INCHES MAXIMUM IN, body_outside_diameter: 0.7430 INCHES MINIMUM AND 0.7435 INCHES MAXIMUM IN, end_item_identification: AFTERBODY SECTION,TORPEDO MK50. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-037-7104, 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
581998-3
NSN: 5340-01-037-7104
NIINs: 010377104, 013282077
FSC: 5340 — Hardware, Commercial
CAGE: 3B150 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
materialCARBON GRAPHITE OVERALL
flange_width0.3900 INCHES MINIMUM AND 0.3940 INCHES MAXIMUM IN
overall_length0.5970 INCHES MINIMUM AND 0.6000 INCHES MAXIMUM IN
body_inside_diameter0.5016 INCHES MINIMUM AND 0.5019 INCHES MAXIMUM IN
body_outside_diameter0.7430 INCHES MINIMUM AND 0.7435 INCHES MAXIMUM IN
end_item_identificationAFTERBODY SECTION,TORPEDO MK50
flange_outside_diameter1.1660 INCHES MINIMUM AND 1.1665 INCHES MAXIMUM IN
NSN5340-01-037-7104
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 581998-3 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
•
LENGTH: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
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LOOP WIDTH: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
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MOUNTING METHOD: ADHESIVE
•
LOOP OPENING WIDTH: 0.035 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
•
WIDTH: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
TECHNICAL CHARACTERISTICS
LENGTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
LOOP WIDTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
MOUNTING METHODADHESIVE
LOOP OPENING WIDTH0.035 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
WIDTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 581998-3?
581998-3 is a BEARING,SLEEVE.
What is the NSN for 581998-3?
581998-3 is cataloged in the U.S. Government catalog under NSN 5340-01-037-7104. This indicates validated use in U.S. government and defense supply chains.
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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.