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5978748 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5978748: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: PLASTIC, hole_diameter: 0.223 INCHES MINIMUM AND 0.233 INCHES MAXIMUM IN, overall_width: 3.220 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN, overall_height: 1.138 INCHES MINIMUM AND 1.148 INCHES MAXIMUM IN, overall_length: 9.370 INCHES MINIMUM AND 9.390 INCHES MAXIMUM IN, first_counterbore_diameter: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-216-4220, 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
5978748
NSN: 5340-01-216-4220
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC
hole_diameter0.223 INCHES MINIMUM AND 0.233 INCHES MAXIMUM IN
overall_width3.220 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
overall_height1.138 INCHES MINIMUM AND 1.148 INCHES MAXIMUM IN
overall_length9.370 INCHES MINIMUM AND 9.390 INCHES MAXIMUM IN
first_counterbore_diameter0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
material_document_and_classificationL-P-390, TYPE 3, CLASS H FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-216-4220
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5978748 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
•
FIRST COUNTERBORE DIAMETER: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-390, TYPE 3, CLASS H FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: PLASTIC
•
HOLE DIAMETER: 0.223 INCHES MINIMUM AND 0.233 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.138 INCHES MINIMUM AND 1.148 INCHES MAXIMUM IN
FIRST COUNTERBORE DIAMETER0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-390, TYPE 3, CLASS H FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH9.370 INCHES MINIMUM AND 9.390 INCHES MAXIMUM IN
OVERALL WIDTH3.220 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
MATERIALPLASTIC
HOLE DIAMETER0.223 INCHES MINIMUM AND 0.233 INCHES MAXIMUM 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

No substitute or cross-reference records for this part.

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 5978748?
5978748 is a BUMPER.
What is the NSN for 5978748?
5978748 is cataloged in the U.S. Government catalog under NSN 5340-01-216-4220. 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.