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M18180/6-052A01 — 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: 0.563 INCHES NOMINAL IN, neck_height: 0.250 INCHES NOMINAL IN, flange_diameter: 3.750 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 0.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-01-242-6381, 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
M18180/6-052A01
NSN: 4730-01-242-6381
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL
thickness0.563 INCHES NOMINAL IN
neck_height0.250 INCHES NOMINAL IN
flange_diameter3.750 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.500 INCHES NOMINAL IN
bolt_hole_quantity4
bolt_circle_diameter2.625 INCHES NOMINAL IN
flange_section_stylePLAIN FACE, RAISED FACE (BLIND)
face_seating_surface_conditionMACHINED
material_document_and_classificationASTM A105,GR1 ASSN STD SINGLE MATERIAL RESPONSE
nominal_pipe_size_for_which_designed0.500 INCHES IN
NSN4730-01-242-6381
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M18180/6-052A01 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A105,GR1 ASSN STD SINGLE MATERIAL RESPONSE
•
FLANGE SECTION STYLE: PLAIN FACE, RAISED FACE (BLIND)
•
FACE SEATING SURFACE CONDITION: MACHINED
•
MATERIAL: STEEL
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
NECK HEIGHT: 0.250 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 2.625 INCHES NOMINAL IN
•
BOLT HOLE DIAMETER: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A105,GR1 ASSN STD SINGLE MATERIAL RESPONSE
FLANGE SECTION STYLEPLAIN FACE, RAISED FACE (BLIND)
FACE SEATING SURFACE CONDITIONMACHINED
MATERIALSTEEL
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
NECK HEIGHT0.250 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER2.625 INCHES NOMINAL IN
BOLT HOLE DIAMETER0.500 INCHES NOMINAL IN
FLANGE DIAMETER3.750 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
6412InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5679InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
412InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
271887InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PB2086T0PB2088InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PB2088InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M18180/6-052A01?
M18180/6-052A01 is a THERMAL RELEASE,CIRCUIT BREAKER.
What parts can replace M18180/6-052A01?
There are 21 known substitutes for M18180/6-052A01: 6412, 5679, 412 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M18180/6-052A01?
M18180/6-052A01 is cataloged in the Federal Logistics Information System under NSN 4730-01-242-6381. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026