PartsTable
Technical Data Sheet
151-31856-17 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The TURNBUCKLE is a the manufacturer industrial component. Key specifications include length: 11.625 INCHES NOMINAL IN, material: STEEL OVERALL, end_style: CLEVIS AND CLOSED EYE, eye_width: 0.513 INCHES NOMINAL IN, body_style: ROUND OPEN BODY, fork_width: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-985-0408, 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
151-31856-17
NSN: 5340-00-985-0408
FSC: 5340
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
length11.625 INCHES NOMINAL IN
materialSTEEL OVERALL
end_styleCLEVIS AND CLOSED EYE
eye_width0.513 INCHES NOMINAL IN
body_styleROUND OPEN BODY
fork_width0.500 INCHES NOMINAL IN
body_length7.125 INCHES NOMINAL IN
thread_class2B BODY
pinhole_diameter0.327 INCHES NOMINAL IN
take-up_distance6.000 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
nominal_thread_size0.375 INCHES BODY IN
NSN5340-00-985-0408
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 151-31856-17 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
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) BODY
MATERIAL: STEEL OVERALL
SURFACE TREATMENT: ZINC OVERALL
PINHOLE DIAMETER: 0.327 INCHES NOMINAL IN
EYE WIDTH: 0.513 INCHES NOMINAL IN
BODY LENGTH: 7.125 INCHES NOMINAL IN
NOMINAL THREAD SIZE: 0.375 INCHES BODY IN
TAKE-UP DISTANCE: 6.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) BODY
MATERIALSTEEL OVERALL
SURFACE TREATMENTZINC OVERALL
PINHOLE DIAMETER0.327 INCHES NOMINAL IN
EYE WIDTH0.513 INCHES NOMINAL IN
BODY LENGTH7.125 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.375 INCHES BODY IN
TAKE-UP DISTANCE6.000 INCHES NOMINAL IN
FORK WIDTH0.500 INCHES NOMINAL IN
BODY STYLEROUND OPEN BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
ASTM F 1145-5Upgraded Successor
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FF-T-791Upgraded Successor
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11157-1-64Upgraded Successor
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MS27950-7Upgraded Successor
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FFT791-TY1-FM1-CL8-5/16X4 1/2Upgraded Successor
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HG-227-5/16X4 1/2Upgraded Successor
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LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 151-31856-17?
151-31856-17 is a TURNBUCKLE.
What parts can replace 151-31856-17?
There are 20 known substitutes for 151-31856-17: ASTM F 1145-5, FF-T-791, 11157-1-64 and 17 more. Substitute compatibility should be verified for your specific system.
Is 151-31856-17 still available?
151-31856-17 is currently cancelled.
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