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IS-425 — TURNBUCKLE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

IS-425: TURNBUCKLE.

The TURNBUCKLE is a the manufacturer industrial component. Key specifications include length: 10.938 INCHES MINIMUM AND 15.750 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING OVERALL, end_style: WERE ROPE SOCKET AND CLEVIS, fork_width: 0.875 INCHES NOMINAL IN, take-up_distance: 4.812 INCHES NOMINAL IN, accommodated_wire_rope_diameter: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-377-6219, 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
IS-425
NSN: 5340-01-377-6219
FSC: 5340 — Hardware, Commercial
CAGE: 79931 — ESMET INC (USA)
SPECIFICATIONS
length10.938 INCHES MINIMUM AND 15.750 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING OVERALL
end_styleWERE ROPE SOCKET AND CLEVIS
fork_width0.875 INCHES NOMINAL IN
take-up_distance4.812 INCHES NOMINAL IN
accommodated_wire_rope_diameter0.250 INCHES NOMINAL IN
NSN5340-01-377-6219
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: IS-425 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
•
ACCOMMODATED WIRE ROPE DIAMETER: 0.250 INCHES NOMINAL IN
•
TAKE-UP DISTANCE: 4.812 INCHES NOMINAL IN
•
LENGTH: 10.938 INCHES MINIMUM AND 15.750 INCHES MAXIMUM IN
•
END STYLE: WERE ROPE SOCKET AND CLEVIS
•
FORK WIDTH: 0.875 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
ACCOMMODATED WIRE ROPE DIAMETER0.250 INCHES NOMINAL IN
TAKE-UP DISTANCE4.812 INCHES NOMINAL IN
LENGTH10.938 INCHES MINIMUM AND 15.750 INCHES MAXIMUM IN
END STYLEWERE ROPE SOCKET AND CLEVIS
FORK WIDTH0.875 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is IS-425?
IS-425 is a TURNBUCKLE.
What is the NSN for IS-425?
IS-425 is cataloged in the U.S. Government catalog under NSN 5340-01-377-6219. 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.