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6853588 ITEM 3 — TURNBUCKLE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6853588 ITEM 3: TURNBUCKLE.

The TURNBUCKLE is a the manufacturer industrial component. Key specifications include length: 29.540 INCHES NOMINAL IN, material: STEEL OVERALL, end_style: CLEVIS AND CLEVIS, fork_width: 1.750 INCHES NOMINAL IN, pinhole_diameter: 1.250 INCHES NOMINAL IN, take-up_distance: 12.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-431-7384, 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
6853588 ITEM 3
NSN: 5340-01-431-7384
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
length29.540 INCHES NOMINAL IN
materialSTEEL OVERALL
end_styleCLEVIS AND CLEVIS
fork_width1.750 INCHES NOMINAL IN
pinhole_diameter1.250 INCHES NOMINAL IN
take-up_distance12.000 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
locking_device_typeNUT
nominal_thread_size1.250 INCHES SECURING PIN HOLE IN
end_item_identificationLOGISTICS SUPPORT VESSEL
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) SHANK
material_document_and_classificationFF-T-791B,TYPE 1,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5340-01-431-7384
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6853588 ITEM 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
•
TAKE-UP DISTANCE: 12.000 INCHES NOMINAL IN
•
LENGTH: 29.540 INCHES NOMINAL IN
•
END STYLE: CLEVIS AND CLEVIS
•
MATERIAL DOCUMENT AND CLASSIFICATION: FF-T-791B,TYPE 1,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
LOCKING DEVICE TYPE: NUT
•
NOMINAL THREAD SIZE: 1.250 INCHES SECURING PIN HOLE IN
•
FORK WIDTH: 1.750 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
TAKE-UP DISTANCE12.000 INCHES NOMINAL IN
LENGTH29.540 INCHES NOMINAL IN
END STYLECLEVIS AND CLEVIS
MATERIAL DOCUMENT AND CLASSIFICATIONFF-T-791B,TYPE 1,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
LOCKING DEVICE TYPENUT
NOMINAL THREAD SIZE1.250 INCHES SECURING PIN HOLE IN
FORK WIDTH1.750 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
PINHOLE DIAMETER1.250 INCHES NOMINAL IN
END ITEM IDENTIFICATIONLOGISTICS SUPPORT VESSEL
SUBSTITUTES & CROSS-REFERENCES 3
1032876Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
HG-228Reference document
Same NSN cross-reference
Reference document — Secondary reference
HG-228 1-1/4 X 12 W/LOCKNUTSSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 6853588 ITEM 3?
6853588 ITEM 3 is a TURNBUCKLE.
What parts can replace 6853588 ITEM 3?
There are 3 known substitutes for 6853588 ITEM 3: 1032876, HG-228, HG-228 1-1/4 X 12 W/LOCKNUTS. Substitute compatibility should be verified for your specific system.
What is the NSN for 6853588 ITEM 3?
6853588 ITEM 3 is cataloged in the U.S. Government catalog under NSN 5340-01-431-7384. 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.