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PartsTable / COMPONENT / S6PEC6-4-56
S6PEC6-4-56 ✓ 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: STEEL BODY, leg_length: 0.550 INCHES NOMINAL IN, seat_angle: 37.0 DEGREES, thread_class: 3A ALL ENDS A, overall_length: 1.480 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-4773, 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
S6PEC6-4-56
NSN: 4730-00-541-4773
FSC: 4730
CAGE: 78357 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV QUICK COUPLER DIVISION (USA)
SPECIFICATIONS
materialSTEEL BODY
leg_length0.550 INCHES NOMINAL IN
seat_angle37.0 DEGREES
thread_class3A ALL ENDS A
overall_length1.480 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
connection_styleFLARED ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentPASSIVATE BODY
nominal_thread_size0.438 INCHES ALL ENDS IN
quick_disconnect_methodPUSH-PULL ALL ENDS
thread_series_designatorUNF ALL ENDS
NSN4730-00-541-4773
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: S6PEC6-4-56 · 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
•
SEAT ANGLE: 37.0 DEGREES
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
LEG LENGTH: 0.550 INCHES NOMINAL IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
THREAD CLASS: 3A ALL ENDS A
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE37.0 DEGREES
STYLE DESIGNATORMALE COUPLING HALF
LEG LENGTH0.550 INCHES NOMINAL IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
OVERALL LENGTH1.480 INCHES NOMINAL IN
THREAD CLASS3A ALL ENDS A
THREAD SERIES DESIGNATORUNF ALL ENDS
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
51872Interchangeable
interchangeable cross-reference
interchangeable
8557Interchangeable
interchangeable cross-reference
interchangeable
8963CD23AInterchangeable
interchangeable cross-reference
interchangeable
1872Interchangeable
interchangeable cross-reference
interchangeable
CP1542TInterchangeable
interchangeable cross-reference
interchangeable
2134336-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S6PEC6-4-56?
S6PEC6-4-56 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace S6PEC6-4-56?
There are 6 known substitutes for S6PEC6-4-56: 51872, 8557, 8963CD23A and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S6PEC6-4-56?
S6PEC6-4-56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-4773. 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