PartsTable
Technical Data Sheet
269-503 ✓ 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 UNION,PIPE is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, seat_type: GROUND-JOINT, reducer_type: CONCENTRIC, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: SCREWED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-189-2606, 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
269-503
NSN: 4730-00-189-2606
FSC: 4730
CAGE: 17651 — PIONEER PRODUCTS INC (USA)
SPECIFICATIONS
materialIRON OVERALL
seat_typeGROUND-JOINT
reducer_typeCONCENTRIC
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorSCREWED
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.500 INCHES ALL ENDS IN
coupling_flange_shapeHEXAGON
nominal_overall_length1.930 INCHES IN
media_for_which_designedSTEAM SINGLE RESPONSE
thread_series_designatorNPT ALL ENDS
NSN4730-00-189-2606
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 269-503 · 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
STYLE DESIGNATOR: SCREWED
NOMINAL THREAD SIZE: 0.500 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATOR: NPT ALL ENDS
REDUCER TYPE: CONCENTRIC
COUPLING FLANGE SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSCREWED
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
REDUCER TYPECONCENTRIC
COUPLING FLANGE SHAPEHEXAGON
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
NOMINAL OVERALL LENGTH1.930 INCHES IN
STYLE DESIGNATORSCREWED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MILU18250Interchangeable
interchangeable cross-reference
interchangeable
519-3-4Interchangeable
interchangeable cross-reference
interchangeable
B16.39Interchangeable
interchangeable cross-reference
interchangeable
198EInterchangeable
IBM 428GB 15K RPM SAS Disk Drive 3.5 (IBM i)
interchangeable
MILU18250TYPEXAInterchangeable
interchangeable cross-reference
interchangeable
1631-400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 269-503?
269-503 is a UNION,PIPE.
What parts can replace 269-503?
There are 13 known substitutes for 269-503: MILU18250, 519-3-4, B16.39 and 10 more. Substitute compatibility should be verified for your specific system.
Is 269-503 still available?
269-503 is currently cancelled.
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