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MIL-F-18180/2 — Technical Data Sheet

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— · 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

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include material: STEEL, thickness: 0.875 INCHES NOMINAL IN, neck_height: 0.250 INCHES NOMINAL IN, socket_depth: 0.750 INCHES NOMINAL IN, flange_diameter: 7.000 INCHES NOMINAL IN, socket_diameter: 2.938 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-235-4078, 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-18180/2
NSN: 4730-00-235-4078
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL
thickness0.875 INCHES NOMINAL IN
neck_height0.250 INCHES NOMINAL IN
socket_depth0.750 INCHES NOMINAL IN
flange_diameter7.000 INCHES NOMINAL IN
socket_diameter2.938 INCHES NOMINAL IN
special_featuresFLANGES CONFORM TO ASA STANDARD B16.5
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.625 INCHES NOMINAL IN
bolt_hole_quantity4
bolt_circle_diameter5.500 INCHES NOMINAL IN
flange_section_stylePLAIN FACE, SOCKET NECK
NSN4730-00-235-4078
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-18180/2 · 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
•
FLANGE SECTION STYLE: RAISED FACE, RAISED NECK
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 500.0 FAHRENHEIT STEAM DEGF
•
MATERIAL: STEEL
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
SURFACE TREATMENT: PAINT
•
SPECIFICATION/STANDARD DATA: 80204-ASA B16.5,TABLES 13 AND 14 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
OPERATING PRESSURE AND TYPE: 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
THICKNESS: 0.656 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE SECTION STYLERAISED FACE, RAISED NECK
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED500.0 FAHRENHEIT STEAM DEGF
MATERIALSTEEL
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
SURFACE TREATMENTPAINT
SPECIFICATION/STANDARD DATA80204-ASA B16.5,TABLES 13 AND 14 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
OPERATING PRESSURE AND TYPE150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
THICKNESS0.656 INCHES NOMINAL IN
FLANGE DIAMETER4.625 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER3.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
MIL-F-18180/3-01A01Interchangeable
interchangeable cross-reference
interchangeable
B16-5-1953TABLE21Interchangeable
interchangeable cross-reference
interchangeable
E-3373Interchangeable
interchangeable cross-reference
interchangeable
M18180/3-03A01Interchangeable
interchangeable cross-reference
interchangeable
653206Interchangeable
interchangeable cross-reference
interchangeable
22010Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-18180/2?
MIL-F-18180/2 is a THERMAL RELEASE,CIRCUIT BREAKER.
What parts can replace MIL-F-18180/2?
There are 19 known substitutes for MIL-F-18180/2: MIL-F-18180/3-01A01, B16-5-1953TABLE21, E-3373 and 16 more. Substitute compatibility should be verified for your specific system.
Is MIL-F-18180/2 still available?
MIL-F-18180/2 is currently cancelled.
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Last verified: September 2026