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Technical Data Sheet
PartsTable / COMPONENT / MIL-F-18180C
MIL-F-18180C ✓ 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 FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thickness: 0.875 INCHES NOMINAL IN, neck_height: 1.875 INCHES NOMINAL IN, groove_depth: 0.250 INCHES NOMINAL IN, groove_width: 0.344 INCHES NOMINAL IN, socket_depth: 1.313 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-193-6973, 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
MIL-F-18180C
NSN: 4730-00-193-6973
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thickness0.875 INCHES NOMINAL IN
neck_height1.875 INCHES NOMINAL IN
groove_depth0.250 INCHES NOMINAL IN
groove_width0.344 INCHES NOMINAL IN
socket_depth1.313 INCHES NOMINAL IN
flange_diameter5.500 INCHES MINIMUM AND 5.560 INCHES MAXIMUM IN
socket_diameter5.047 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
surface_treatmentPASSIVATE
bolt_hole_diameter0.734 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
bolt_hole_quantity4
NSN4730-00-193-6973
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-18180C · 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
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 500.0 FAHRENHEIT STEAM DEGF
•
MATERIAL: STEEL
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
OPERATING PRESSURE AND TYPE: 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
SPECIFICATION/STANDARD DATA: 81349-MIL-F-18180 GOVERNMENT SPECIFICATION
•
NONDEFINITIVE SPEC/STD DATA: 13 TABLE AND 14 TABLE
•
NECK HEIGHT: 0.625 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 11.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED500.0 FAHRENHEIT STEAM DEGF
MATERIALSTEEL
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
OPERATING PRESSURE AND TYPE150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
SPECIFICATION/STANDARD DATA81349-MIL-F-18180 GOVERNMENT SPECIFICATION
NONDEFINITIVE SPEC/STD DATA13 TABLE AND 14 TABLE
NECK HEIGHT0.625 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER11.750 INCHES NOMINAL IN
BOLT HOLE QUANTITY8
RAISED FACE DIAMETER10.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
MIL-F-18180CInterchangeable
interchangeable cross-reference
interchangeable
B16-5-1961Interchangeable
interchangeable cross-reference
interchangeable
M18180/1-027A01AInterchangeable
interchangeable cross-reference
interchangeable
M18180/3-12A01Interchangeable
interchangeable cross-reference
interchangeable
1-6S0Interchangeable
interchangeable cross-reference
interchangeable
M18180/1-007C21AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-18180C?
MIL-F-18180C is a FLANGE,PIPE.
What parts can replace MIL-F-18180C?
There are 15 known substitutes for MIL-F-18180C: MIL-F-18180C, B16-5-1961, M18180/1-027A01A and 12 more. Substitute compatibility should be verified for your specific system.
Is MIL-F-18180C still available?
MIL-F-18180C 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