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M18180/2 84A01D — 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: 0.375 INCHES NOMINAL IN, socket_depth: 0.375 INCHES NOMINAL IN, flange_diameter: 4.750 INCHES NOMINAL IN, socket_diameter: 0.880 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-023-8368, 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
M18180/2 84A01D
NSN: 4730-01-023-8368
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_height0.375 INCHES NOMINAL IN
socket_depth0.375 INCHES NOMINAL IN
flange_diameter4.750 INCHES NOMINAL IN
socket_diameter0.880 INCHES NOMINAL IN
special_features0.546 IN. BORE IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.750 INCHES NOMINAL IN
bolt_hole_quantity4
raised_face_height0.250 INCHES NOMINAL IN
bolt_circle_diameter3.250 INCHES NOMINAL IN
NSN4730-01-023-8368
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M18180/2 84A01D · 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
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.880 INCHES IN
•
BOLT HOLE QUANTITY: 4
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: AS DIFFERENTIATED BY THE ASME SPEC
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
BOLT CIRCLE DIAMETER: 3.250 INCHES NOMINAL IN
•
SOCKET DIAMETER: 0.880 INCHES NOMINAL IN
•
SOCKET DEPTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES0.546 IN. BORE IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.880 INCHES IN
BOLT HOLE QUANTITY4
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY THE ASME SPEC
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
BOLT CIRCLE DIAMETER3.250 INCHES NOMINAL IN
SOCKET DIAMETER0.880 INCHES NOMINAL IN
SOCKET DEPTH0.375 INCHES NOMINAL IN
RAISED FACE DIAMETER1.375 INCHES NOMINAL IN
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
15512Interchangeable
interchangeable cross-reference
interchangeable
65548Interchangeable
interchangeable cross-reference
interchangeable
8A6N3Interchangeable
interchangeable cross-reference
interchangeable
P307Interchangeable
interchangeable cross-reference
interchangeable
M76MWPC227A0Interchangeable
interchangeable cross-reference
interchangeable
M76MW-C227U0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M18180/2 84A01D?
M18180/2 84A01D is a THERMAL RELEASE,CIRCUIT BREAKER.
What parts can replace M18180/2 84A01D?
There are 20 known substitutes for M18180/2 84A01D: 15512, 65548, 8A6N3 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M18180/2 84A01D?
M18180/2 84A01D is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-023-8368. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026