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138982 — COUPLING,SHAFT,FLEXIBLE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

138982: COUPLING,SHAFT,FLEXIBLE.

The COUPLING,SHAFT,FLEXIBLE is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 2A NUT THREAD A, thread_length: 0.875 INCHES NOMINAL NUT THREAD IN, overall_length: 4.125 INCHES NOMINAL IN, thread_direction: RIGHT-HAND NUT THREAD, surface_treatment: PHOSPHATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-393-2647, 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
138982
NSN: 5340-00-393-2647
NIINs: 003932647, 006402640, 007394350, 010997946
FSC: 5340 — Hardware, Commercial
CAGE: 79318 — MEGGITT NORTH HOLLYWOOD INC (USA)
SPECIFICATIONS
materialSTEEL
thread_class2A NUT THREAD A
thread_length0.875 INCHES NOMINAL NUT THREAD IN
overall_length4.125 INCHES NOMINAL IN
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPHOSPHATE OVERALL
nominal_thread_size0.500 INCHES STUD THREAD IN
thread_quantity_per_inch20 STUD THREAD
thread_series_designatorUNF STUD THREAD
material_document_and_classification1235-436 FSCM 13446 MFR REF SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationBS 3189 TYPE 1A FSCM 13446 MFR REF SINGLE TREATMENT RESPONSE OVERALL A
NSN5340-00-393-2647
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 138982 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
SUBSTITUTES & CROSS-REFERENCES 1
673076-151Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 138982?
138982 is a COUPLING,SHAFT,FLEXIBLE.
What parts can replace 138982?
There is 1 known substitute for 138982: 673076-151. Substitute compatibility should be verified for your specific system.
What is the NSN for 138982?
138982 is cataloged in the U.S. Government catalog under NSN 5340-00-393-2647. 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.