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Technical Data Sheet
PartsTable / COMPONENT / AS4863.03
AS4863.03 ✓ 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 AS4863.03 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-188-3514, 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
AS4863.03
NSN: 4730-00-188-3514
FSC: 4730
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
Part NumberAS4863.03
NSN4730-00-188-3514
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS4863.03 · 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
•
CORE DEPTH: 0.350 INCHES MAXIMUM IN
•
DRIVE END STYLE: RAISED SQUARE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,COMP 22,1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.375 INCHES EXTERNAL IN
•
BODY CORE DIAMETER: 0.359 INCHES NOMINAL IN
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.375 INCHES IN
•
MATERIAL: COPPER ALLOY 360 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CORE DEPTH0.350 INCHES MAXIMUM IN
DRIVE END STYLERAISED SQUARE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,COMP 22,1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.375 INCHES EXTERNAL IN
BODY CORE DIAMETER0.359 INCHES NOMINAL IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.375 INCHES IN
END ITEM IDENTIFICATIONGRUMMAN A10 AIRCRAFT
MATERIALCOPPER ALLOY 360 OVERALL
BODY TYPECORED
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
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V472Interchangeable
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2749Interchangeable
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NY460-622-4PC515Interchangeable
interchangeable cross-reference
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MILM17321Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS4863.03?
AS4863.03 is a AS4863.03.
What parts can replace AS4863.03?
There are 32 known substitutes for AS4863.03: NH66870, VS407, V472 and 29 more. Substitute compatibility should be verified for your specific system.
Is AS4863.03 still available?
AS4863.03 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