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6521K72 — MOUNT,RESILIENT,UTILITY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6521K72: MOUNT,RESILIENT,UTILITY.

The MOUNT,RESILIENT,UTILITY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_length: 1.260 INCHES NOMINAL IN, surface_treatment: CHROMATE OVERALL, major_outside_diameter: 0.590 INCHES NOMINAL IN, minor_outside_diameter: 0.250 INCHES NOMINAL IN, end_item_identification: MRAP-MATV WITH CS13 POP AND SNE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-628-5149, 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
6521K72
NSN: 5340-01-628-5149
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_length1.260 INCHES NOMINAL IN
surface_treatmentCHROMATE OVERALL
major_outside_diameter0.590 INCHES NOMINAL IN
minor_outside_diameter0.250 INCHES NOMINAL IN
end_item_identificationMRAP-MATV WITH CS13 POP AND SNE
part_name_assigned_by_controlling_agencyNONADJUSTABLE LINEAR SPEED LIMITER
NSN5340-01-628-5149
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6521K72 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
•
MINOR OUTSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
FLANGE LENGTH: 1.260 INCHES NOMINAL IN
•
SURFACE TREATMENT: CHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
•
MAJOR OUTSIDE DIAMETER: 0.590 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MINOR OUTSIDE DIAMETER0.250 INCHES NOMINAL IN
FLANGE LENGTH1.260 INCHES NOMINAL IN
SURFACE TREATMENTCHROMATE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNONADJUSTABLE LINEAR SPEED LIMITER
END ITEM IDENTIFICATIONMRAP-MATV WITH CS13 POP AND SNE
MATERIALSTEEL OVERALL
MAJOR OUTSIDE DIAMETER0.590 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

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 6521K72?
6521K72 is a MOUNT,RESILIENT,UTILITY.
What is the NSN for 6521K72?
6521K72 is cataloged in the U.S. Government catalog under NSN 5340-01-628-5149. 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.