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PartsTable / COMPONENT / M1183/8-42A
M1183/8-42A ✓ 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 M1183/8-42A is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-012-9451, 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
M1183/8-42A
NSN: 4730-01-012-9451
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM1183/8-42A
NSN4730-01-012-9451
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M1183/8-42A · 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
KEY FEATURES
•
CONNECTION TYPE: UNTHREADED EXTERNAL PIPE SECOND END
•
SPECIFICATION/STANDARD DATA: 81349-MIL-F1183J GOVERNMENT SPECIFICATION
•
NONDEFINITIVE SPEC/STD DATA: 42 SIZE AND A TYPE
•
REDUCER TYPE: CONCENTRIC
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES SECOND END IN
•
CONNECTION STYLE: SOCKET W/ GROVE (PIPE) FIRST END
•
NOMINAL OVERALL LENGTH: 1.060 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPEUNTHREADED EXTERNAL PIPE SECOND END
SPECIFICATION/STANDARD DATA81349-MIL-F1183J GOVERNMENT SPECIFICATION
NONDEFINITIVE SPEC/STD DATA42 SIZE AND A TYPE
REDUCER TYPECONCENTRIC
CONNECTION TYPEUNTHREADED INTERNAL PIPE FIRST END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES SECOND END IN
CONNECTION STYLESOCKET W/ GROVE (PIPE) FIRST END
NOMINAL OVERALL LENGTH1.060 INCHES IN
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
FURNISHED ITEMS AND QUANTITY1 BRAZING RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
517-5563843 ITEM FL15Interchangeable
interchangeable cross-reference
interchangeable
6558-473Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-20042DInterchangeable
interchangeable cross-reference
interchangeable
517-5563843Interchangeable
interchangeable cross-reference
interchangeable
9715627Interchangeable
interchangeable cross-reference
interchangeable
517-5563843 ITEInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M1183/8-42A?
M1183/8-42A is a M1183/8-42A.
What parts can replace M1183/8-42A?
There are 12 known substitutes for M1183/8-42A: 517-5563843 ITEM FL15, 6558-473, MIL-F-20042D and 9 more. Substitute compatibility should be verified for your specific system.
Is M1183/8-42A still available?
M1183/8-42A 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