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Technical Data Sheet
PartsTable / COMPONENT / SPHN4-4-56-303
SPHN4-4-56-303 ✓ 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 COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, point_type: CONVENTIONAL, shaft_type: ROUND, FLATTED SINGLE ACTUATOR, flat_height: 0.216 INCHES NOMINAL SINGLE ACTUATOR IN, point_angle: 118.0 DEGREES NOMINAL, shank_style: STRAIGHT ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-022-2748, 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
SPHN4-4-56-303
NSN: 4730-00-022-2748
FSC: 4730
CAGE: 78357 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV QUICK COUPLER DIVISION (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
point_typeCONVENTIONAL
shaft_typeROUND, FLATTED SINGLE ACTUATOR
flat_height0.216 INCHES NOMINAL SINGLE ACTUATOR IN
point_angle118.0 DEGREES NOMINAL
shank_styleSTRAIGHT ROUND
flute_length2.875 INCHES NOMINAL IN
shaft_length0.562 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
overall_width0.311 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
pole_quantity1 EACH SECTION FRONT
terminal_typeCLIP
NSN4730-00-022-2748
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: SPHN4-4-56-303 · 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 14
4730PL0970333Interchangeable
interchangeable cross-reference
interchangeable
1404076Interchangeable
interchangeable cross-reference
interchangeable
S6PHN4-4-56Interchangeable
interchangeable cross-reference
interchangeable
70-10023Interchangeable
interchangeable cross-reference
interchangeable
5739Interchangeable
interchangeable cross-reference
interchangeable
40676Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SPHN4-4-56-303?
SPHN4-4-56-303 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace SPHN4-4-56-303?
There are 14 known substitutes for SPHN4-4-56-303: 4730PL0970333, 1404076, S6PHN4-4-56 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SPHN4-4-56-303?
SPHN4-4-56-303 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-022-2748. 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