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Technical Data Sheet
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M18180/1-007C21A — 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

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, flange_diameter: 5.500 INCHES MINIMUM AND 5.560 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-00-845-4993, 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
M18180/1-007C21A
NSN: 4730-00-845-4993
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
flange_diameter5.500 INCHES MINIMUM AND 5.560 INCHES MAXIMUM IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
surface_treatmentPASSIVATE
bolt_hole_diameter0.734 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
bolt_hole_quantity4
raised_face_height0.250 INCHES NOMINAL IN
bolt_circle_diameter5.500 INCHES NOMINAL IN
NSN4730-00-845-4993
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M18180/1-007C21A · 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: STEEL CORROSION RESISTING
•
FACE SEATING SURFACE CONDITION: MACHINED
•
SURFACE TREATMENT: PASSIVATE
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
OPERATING PRESSURE AND TYPE: 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
FLANGE DIAMETER: 5.500 INCHES MINIMUM AND 5.560 INCHES MAXIMUM IN
•
BOLT CIRCLE DIAMETER: 5.500 INCHES NOMINAL IN
•
RAISED FACE HEIGHT: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIALSTEEL CORROSION RESISTING
FACE SEATING SURFACE CONDITIONMACHINED
SURFACE TREATMENTPASSIVATE
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
OPERATING PRESSURE AND TYPE150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
FLANGE DIAMETER5.500 INCHES MINIMUM AND 5.560 INCHES MAXIMUM IN
BOLT CIRCLE DIAMETER5.500 INCHES NOMINAL IN
RAISED FACE HEIGHT0.250 INCHES NOMINAL IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED2.500 INCHES IN
FLANGE SECTION STYLERAISED FACE, WELDING NECK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
16-8INInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
M18180/3-13A01InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
50InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-F-18180CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
B16-5-1961InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
M18180/1-027A01AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M18180/1-007C21A?
M18180/1-007C21A is a FLANGE,PIPE.
What parts can replace M18180/1-007C21A?
There are 15 known substitutes for M18180/1-007C21A: 16-8IN, M18180/3-13A01, 50 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M18180/1-007C21A?
M18180/1-007C21A is cataloged in the Federal Logistics Information System under NSN 4730-00-845-4993. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026