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PartsTable / COMPONENT / 505-0177
505-0177 ✓ 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, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: CLOSE, surface_treatment: OXIDE INSIDE, nominal_thread_size: 1.250 INCHES ALL ENDS IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-833-7972, 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
505-0177
NSN: 4730-00-833-7972
FSC: 4730
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorCLOSE
surface_treatmentOXIDE INSIDE
nominal_thread_size1.250 INCHES ALL ENDS IN
nominal_overall_length1.720 INCHES IN
thread_series_designatorNPT ALL ENDS
NSN4730-00-833-7972
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 505-0177 · 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
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: CLOSE
•
NOMINAL OVERALL LENGTH: 1.720 INCHES IN
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
SURFACE TREATMENT: OXIDE INSIDE
•
NOMINAL THREAD SIZE: 1.250 INCHES ALL ENDS IN
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
STYLE DESIGNATORCLOSE
NOMINAL OVERALL LENGTH1.720 INCHES IN
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
SURFACE TREATMENTOXIDE INSIDE
NOMINAL THREAD SIZE1.250 INCHES ALL ENDS IN
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
40409Interchangeable
interchangeable cross-reference
interchangeable
289819Interchangeable
interchangeable cross-reference
interchangeable
50517-7Interchangeable
interchangeable cross-reference
interchangeable
50517-1Interchangeable
interchangeable cross-reference
interchangeable
44789-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 505-0177?
505-0177 is a NIPPLE,PIPE.
What parts can replace 505-0177?
There are 5 known substitutes for 505-0177: 40409, 289819, 50517-7 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 505-0177?
505-0177 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-833-7972. 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