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7539780 ITEM 7 — TURNBUCKLE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7539780 ITEM 7: TURNBUCKLE.

The TURNBUCKLE is a the manufacturer industrial component. Key specifications include special_features: CAR 424D LCAC 1-90 HIGH FREQUENCY ANTENNA REPLACEMENT, end_item_identification: ANTENNA, part_name_assigned_by_controlling_agency: TRUNBUCKLE, WELDED FORKS. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-579-5485, 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
7539780 ITEM 7
NSN: 5340-01-579-5485
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
special_featuresCAR 424D LCAC 1-90 HIGH FREQUENCY ANTENNA REPLACEMENT
end_item_identificationANTENNA
part_name_assigned_by_controlling_agencyTRUNBUCKLE, WELDED FORKS
NSN5340-01-579-5485
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7539780 ITEM 7 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESCAR 424D LCAC 1-90 HIGH FREQUENCY ANTENNA REPLACEMENT
PART NAME ASSIGNED BY CONTROLLING AGENCYTRUNBUCKLE, WELDED FORKS
END ITEM IDENTIFICATIONANTENNA
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 2
30315T616Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
30315T44Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7539780 ITEM 7?
7539780 ITEM 7 is a TURNBUCKLE.
What parts can replace 7539780 ITEM 7?
There are 2 known substitutes for 7539780 ITEM 7: 30315T616, 30315T44. Substitute compatibility should be verified for your specific system.
What is the NSN for 7539780 ITEM 7?
7539780 ITEM 7 is cataloged in the U.S. Government catalog under NSN 5340-01-579-5485. 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.