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PartsTable / COMPONENT / 4549K653
4549K653 ✓ 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 NIPPLE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 0.688 INCHES MAXIMUM FIRST END IN, seat_angle: 37.0 DEGREES FIRST END, nominal_length: 1.500 INCHES ALL ENDS IN, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-196-1509, 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
4549K653
NSN: 4730-00-196-1509
FSC: 4730
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length0.688 INCHES MAXIMUM FIRST END IN
seat_angle37.0 DEGREES FIRST END
nominal_length1.500 INCHES ALL ENDS IN
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresEXTRA STRONG BLACK COATED STEEL
style_designatorSHORT
surface_treatmentZINC OVERALL
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size1.250 INCHES ALL ENDS IN
fsc_application_dataAS MODIFIED BY SURFACE TREATMENT
NSN4730-00-196-1509
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4549K653 · 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 8
950160-1BInterchangeable
interchangeable cross-reference
interchangeable
6301-2Interchangeable
interchangeable cross-reference
interchangeable
6410Interchangeable
interchangeable cross-reference
interchangeable
10-52419Interchangeable
interchangeable cross-reference
interchangeable
MS51953-171Interchangeable
Same NIIN cross-reference
interchangeable
WW-N-351Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4549K653?
4549K653 is a NIPPLE,PIPE.
What parts can replace 4549K653?
There are 8 known substitutes for 4549K653: 950160-1B, 6301-2, 6410 and 5 more. Substitute compatibility should be verified for your specific system.
Is 4549K653 still available?
4549K653 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