PartsTable
Technical Data Sheet
MS18308-3/8INCH ✓ Verified by PartsTable
· 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 MS18308-3/8INCH is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-174-5938, 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
MS18308-3/8INCH
NSN: 4730-00-174-5938
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMS18308-3/8INCH
NSN4730-00-174-5938
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS18308-3/8INCH · 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
FACE SEATING SURFACE CONDITION: MACHINED
FLANGE SECTION STYLE: RAISED FACE, SOCKET NECK
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.375 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-872 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIAL: STEEL
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY FLANGE,PIPE,3/8 IN.NOM PIPE SIZE IN
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
OPERATING PRESSURE AND TYPE: 600.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 1000.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
TECHNICAL CHARACTERISTICS (FLIS)
FACE SEATING SURFACE CONDITIONMACHINED
FLANGE SECTION STYLERAISED FACE, SOCKET NECK
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.375 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-872 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY FLANGE,PIPE,3/8 IN.NOM PIPE SIZE IN
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
OPERATING PRESSURE AND TYPE600.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 1000.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED850.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT WATER DEGF
RAISED FACE HEIGHT0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
MS18308-1/4Interchangeable
interchangeable cross-reference
interchangeable
MS18308-1/4INCHInterchangeable
interchangeable cross-reference
interchangeable
5000S4823-64496Interchangeable
interchangeable cross-reference
interchangeable
MS18308Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS18308-3/8INCH?
MS18308-3/8INCH is a MS18308-3/8INCH.
What parts can replace MS18308-3/8INCH?
There are 4 known substitutes for MS18308-3/8INCH: MS18308-1/4, MS18308-1/4INCH, 5000S4823-64496 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS18308-3/8INCH?
MS18308-3/8INCH is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-174-5938. This indicates validated use in U.S. government and defense supply chains.
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