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Technical Data Sheet

MIL-F-18180/6 — THERMAL RELEASE,CIRCUIT BREAKER

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MIL-F-18180/6: THERMAL RELEASE,CIRCUIT BREAKER.

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include material: STEEL, thickness: 1.250 INCHES NOMINAL IN, flange_diameter: 8.250 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 0.880 INCHES NOMINAL IN, raised_face_height: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-015-9329, 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-18180/6
NSN: 4730-01-015-9329
NIINs: 010159329, 011328797
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL
thickness1.250 INCHES NOMINAL IN
flange_diameter8.250 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.880 INCHES NOMINAL IN
bolt_hole_quantity8
raised_face_height0.250 INCHES NOMINAL IN
bolt_circle_diameter6.620 INCHES NOMINAL IN
flange_section_styleRAISED FACE (BLIND)
face_seating_surface_conditionMACHINED
material_document_and_classificationASTM A105,GRADE 10 ASSN STD SINGLE MATERIAL RESPONSE
nominal_pipe_size_for_which_designed3.000 INCHES IN
NSN4730-01-015-9329
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-18180/6 · 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 DIAMETER: 7.000 INCHES NOMINAL IN
•
FACE SEATING SURFACE CONDITION: MACHINED
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 2.500 INCHES IN
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 301.0 FAHRENHEIT ANY ACCEPTABLE DEGF
•
FLANGE SECTION STYLE: PLAIN FACE (BLIND)
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
BOLT HOLE DIAMETER: 0.750 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A181,GRADE 1 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER7.000 INCHES NOMINAL IN
FACE SEATING SURFACE CONDITIONMACHINED
NOMINAL PIPE SIZE FOR WHICH DESIGNED2.500 INCHES IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED301.0 FAHRENHEIT ANY ACCEPTABLE DEGF
FLANGE SECTION STYLEPLAIN FACE (BLIND)
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
BOLT HOLE DIAMETER0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A181,GRADE 1 ASSN STD SINGLE MATERIAL RESPONSE
SPECIFICATION/STANDARD DATA05047-ANSI B16.5 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
BOLT HOLE QUANTITY4
SUBSTITUTES & CROSS-REFERENCES 5
70-150-2 1/2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B16.5Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
ANSI B16.5Reference document
Same NSN cross-reference
Reference document — Secondary reference
70Reference document
Same NSN cross-reference
Reference document — Secondary reference
M18180/6-007B04Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-18180/6?
MIL-F-18180/6 is a THERMAL RELEASE,CIRCUIT BREAKER.
What parts can replace MIL-F-18180/6?
There are 5 known substitutes for MIL-F-18180/6: 70-150-2 1/2, B16.5, ANSI B16.5 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-F-18180/6?
MIL-F-18180/6 is cataloged in the U.S. Government catalog under NSN 4730-01-015-9329. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.