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MILF1183 ✓ 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 BRAZING ALLOY,SILVER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, overall_diameter: 1.003 INCHES MINIMUM AND 1.013 INCHES MAXIMUM IN, end_item_identification: EAB SYS-551F, part_name_assigned_by_controlling_agency: RETAINER, PACKING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-2989, 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
MILF1183
NSN: 4730-00-278-2989
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialCOPPER ALLOY
overall_diameter1.003 INCHES MINIMUM AND 1.013 INCHES MAXIMUM IN
end_item_identificationEAB SYS-551F
part_name_assigned_by_controlling_agencyRETAINER, PACKING
NSN4730-00-278-2989
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MILF1183 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESTEST
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
MIL-F-1183GInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1183/7Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-1183FIG18Interchangeable
interchangeable cross-reference
interchangeable
M1183/7-01Interchangeable
interchangeable cross-reference
interchangeable
00699067512610Interchangeable
interchangeable cross-reference
interchangeable
550-250-18-267Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILF1183?
MILF1183 is a BRAZING ALLOY,SILVER.
What parts can replace MILF1183?
There are 16 known substitutes for MILF1183: MIL-F-1183G, MIL-DTL-1183/7, MIL-F-1183FIG18 and 13 more. Substitute compatibility should be verified for your specific system.
Is MILF1183 still available?
MILF1183 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