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P-15-3 — PISTON,INTERNAL COMBUSTION ENGIN

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

P-15-3: PISTON,INTERNAL COMBUSTION ENGIN.

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include material: IRON CAST OVERALL, leg_length: 1.750 INCHES NOMINAL SECOND END IN, indicator_type: AURAL, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, special_features: PHYSICAL FORM: PASTE; COLOR: WHITE; SPECIFIC USE: AIRCRAFT; SIZE: ONE GALLON KIT;. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-246-5471, 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
P-15-3
NSN: 4730-00-246-5471
NIINs: 002465471, 005184440, 009669071, 016433242
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
materialIRON CAST OVERALL
leg_length1.750 INCHES NOMINAL SECOND END IN
indicator_typeAURAL
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresPHYSICAL FORM: PASTE; COLOR: WHITE; SPECIFIC USE: AIRCRAFT; SIZE: ONE GALLON KIT;
surface_treatmentOXIDE OVERALL
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size2.000 INCHES FIRST END IN
media_for_which_designedWATER-OIL-GAS SECOND RESPONSE
thread_series_designatorNPT ALL ENDS
nondefinitive_spec/std_data5 TABLE
NSN4730-00-246-5471
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: P-15-3 · 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 PIPE SIZE ACCOMMODATED: 1.250 INCHES THIRD END IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A126,CL A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OPERATING PRESSURE: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
LEG LENGTH: 1.750 INCHES NOMINAL SECOND END IN
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED1.250 INCHES THIRD END IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A126,CL A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH1.750 INCHES NOMINAL SECOND END IN
LEG LENGTH1.900 INCHES NOMINAL FIRST END IN
LEG LENGTH2.100 INCHES NOMINAL THIRD END IN
NOMINAL THREAD SIZE1.250 INCHES THIRD END IN
NOMINAL THREAD SIZE1.250 INCHES SECOND END IN
SUBSTITUTES & CROSS-REFERENCES 2
WWP501Reference document
Same NSN cross-reference
Reference document — Secondary reference
B16.4Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P-15-3?
P-15-3 is a PISTON,INTERNAL COMBUSTION ENGIN.
What parts can replace P-15-3?
There are 2 known substitutes for P-15-3: WWP501, B16.4. Substitute compatibility should be verified for your specific system.
What is the NSN for P-15-3?
P-15-3 is cataloged in the U.S. Government catalog under NSN 4730-00-246-5471. This indicates validated use in U.S. government and defense supply chains.
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