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Technical Data Sheet
PartsTable / COMPONENT / 81-512418
81-512418 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, body_type: SOLID, drive_end_style: HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL, operating_pressure: 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-083-6903, 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
81-512418
NSN: 4730-00-083-6903
FSC: 4730
CAGE: 04655 — GENERAL DYNAMICS MISSION SYSTEMS, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
body_typeSOLID
drive_end_styleHEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
operating_pressure6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
nominal_thread_size0.500 INCHES EXTERNAL IN
thread_series_designatorNPS EXTERNAL
specification/standard_data96906-MS14304-6+08 GOVERNMENT STANDARD
material_document_and_classificationASTM A182, F304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_pipe_size_for_which_designed0.500 INCHES IN
NSN4730-00-083-6903
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 81-512418 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
2890672Interchangeable
interchangeable cross-reference
interchangeable
SS-200-PInterchangeable
interchangeable cross-reference
interchangeable
0289 0672Interchangeable
interchangeable cross-reference
interchangeable
SS2PInterchangeable
interchangeable cross-reference
interchangeable
120-1807-000Interchangeable
interchangeable cross-reference
interchangeable
120135-002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81-512418?
81-512418 is a RELAY,ELECTROMAGNETIC.
What parts can replace 81-512418?
There are 17 known substitutes for 81-512418: 2890672, SS-200-P, 0289 0672 and 14 more. Substitute compatibility should be verified for your specific system.
Is 81-512418 still available?
81-512418 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026