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Technical Data Sheet
PartsTable / COMPONENT / 4MHC6S
4MHC6S ✓ 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 ADAPTER,STRAIGHT,PIPE TO HOSE is a the manufacturer industrial component. Key specifications include color: BLACK BORDER, width: 36.000 INCHES NOMINAL IN, length: 36.000 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, cup_width: 0.5800 INCHES NOMINAL IN, fuel_type: ACETYLENE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-158-8417, 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
4MHC6S
NSN: 4730-01-158-8417
FSC: 4730
CAGE: 11649 — CAJON CO (USA)
SPECIFICATIONS
colorBLACK BORDER
width36.000 INCHES NOMINAL IN
length36.000 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
cup_width0.5800 INCHES NOMINAL IN
fuel_typeACETYLENE
thickness0.032 INCHES NOMINAL IN
cone_width0.7800 INCHES NOMINAL IN
design_typeCUTTING-OFF
holder_typeSTRAIGHT
inscriptionSCHOOL CROSSING
shank_width0.500 INCHES NOMINAL IN
NSN4730-01-158-8417
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4MHC6S · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
S21Interchangeable
interchangeable cross-reference
interchangeable
18720Interchangeable
interchangeable cross-reference
interchangeable
91D1243Interchangeable
interchangeable cross-reference
interchangeable
521Interchangeable
interchangeable cross-reference
interchangeable
00H581TYPE3CLASS1STYLEBSIZECS41Interchangeable
interchangeable cross-reference
interchangeable
B107.48Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4MHC6S?
4MHC6S is a ADAPTER,STRAIGHT,PIPE TO HOSE.
What parts can replace 4MHC6S?
There are 23 known substitutes for 4MHC6S: S21, 18720, 91D1243 and 20 more. Substitute compatibility should be verified for your specific system.
Is 4MHC6S still available?
4MHC6S is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026