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PartsTable / COMPONENT / A-CPL/HOS-4FS-S81
A-CPL/HOS-4FS-S81 ✓ 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 A-CPL/HOS-4FS-S81 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 4730-00-007-2195, 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
A-CPL/HOS-4FS-S81
NSN: 4730-00-007-2195
FSC: 4730
CAGE: 32142 — HYDRASEARCH COMPANY, LLC (USA)
SPECIFICATIONS
Part NumberA-CPL/HOS-4FS-S81
NSN4730-00-007-2195
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A-CPL/HOS-4FS-S81 · 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 OVERALL LENGTH: 4.800 INCHES IN
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 5.440 INCHES SECOND END IN
•
NOMINAL PIPE SIZE ACCOMMODATED: 4.000 INCHES FIRST END IN
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 3.700 INCHES SECOND END IN
•
CONNECTION STYLE: GRIPPING NIPPLE (NOSE) SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH4.800 INCHES IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED5.440 INCHES SECOND END IN
NOMINAL PIPE SIZE ACCOMMODATED4.000 INCHES FIRST END IN
MATERIALALUMINUM ALLOY OVERALL
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED3.700 INCHES SECOND END IN
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
CONNECTION STYLESOCKET W/ GROVE (PIPE) FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
A-CPL/H0S-4MS-S81Interchangeable
interchangeable cross-reference
interchangeable
M24356-40MCInterchangeable
interchangeable cross-reference
interchangeable
MIL-C-24356Interchangeable
interchangeable cross-reference
interchangeable
222094-4Interchangeable
interchangeable cross-reference
interchangeable
A931-4SInterchangeable
interchangeable cross-reference
interchangeable
A-CLMP-4SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-CPL/HOS-4FS-S81?
A-CPL/HOS-4FS-S81 is a A-CPL/HOS-4FS-S81.
What parts can replace A-CPL/HOS-4FS-S81?
There are 25 known substitutes for A-CPL/HOS-4FS-S81: A-CPL/H0S-4MS-S81, M24356-40MC, MIL-C-24356 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-CPL/HOS-4FS-S81?
A-CPL/HOS-4FS-S81 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-007-2195. 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: July 2026