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Technical Data Sheet
MS27954-5 ✓ 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 material: STEEL OVERALL, body_style: ROUND OPEN BODY, body_length: 10.500 INCHES MINIMUM IN, thread_class: 2B BODY, surface_treatment: ZINC OVERALL, nominal_thread_size: 0.500 INCHES BODY IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-150-4777, 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
MS27954-5
NSN: 5340-00-150-4777
FSC: 5340
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleROUND OPEN BODY
body_length10.500 INCHES MINIMUM IN
thread_class2B BODY
surface_treatmentZINC OVERALL
nominal_thread_size0.500 INCHES BODY IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) BODY
nondefinitive_spec/std_data1 TYPE AND 1 GRADE AND B CLASS
surface_treatment_document_and_classificationASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5340-00-150-4777
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS27954-5 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
BODY STYLE: ROUND OPEN BODY
THREAD CLASS: 2B BODY
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) BODY
MATERIAL: STEEL OVERALL
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1 GRADE AND B CLASS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
BODY LENGTH: 10.500 INCHES MINIMUM IN
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BODY STYLEROUND OPEN BODY
THREAD CLASS2B BODY
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) BODY
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 GRADE AND B CLASS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
BODY LENGTH10.500 INCHES MINIMUM IN
SURFACE TREATMENTZINC OVERALL
NOMINAL THREAD SIZE0.500 INCHES BODY IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
ASTM F 1145-5Upgraded Successor
successor cross-reference
successor
FF-T-791Upgraded Successor
successor cross-reference
successor
11157-1-64Upgraded Successor
successor cross-reference
successor
MS27950-7Upgraded Successor
successor cross-reference
successor
FFT791-TY1-FM1-CL8-5/16X4 1/2Upgraded Successor
successor cross-reference
successor
HG-227-5/16X4 1/2Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS27954-5?
MS27954-5 is a TURNBUCKLE.
What parts can replace MS27954-5?
There are 18 known substitutes for MS27954-5: ASTM F 1145-5, FF-T-791, 11157-1-64 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS27954-5?
MS27954-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-150-4777. This indicates validated use in U.S. government and defense supply chains.
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