PartsTable
Technical Data Sheet
ASTM-A403 ✓ 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 FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, leg_length: 0.625 INCHES NOMINAL THIRD END IN, reducer_type: CONCENTRIC, connection_type: BUTT WELD PIPE ALL ENDS, connection_style: BEVELED (PIPE) ALL ENDS, special_features: SHEDULE 80 OR CLASS 3000.. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-529-5078, 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
ASTM-A403
NSN: 4730-00-529-5078
FSC: 4730
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
leg_length0.625 INCHES NOMINAL THIRD END IN
reducer_typeCONCENTRIC
connection_typeBUTT WELD PIPE ALL ENDS
connection_styleBEVELED (PIPE) ALL ENDS
special_featuresSHEDULE 80 OR CLASS 3000.
nominal_overall_length3.000 INCHES IN
nondefinitive_spec/std_data9 TABLE
specification/standard_data80204-B16.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_pipe_size_accommodated2.000 INCHES FIRST END IN
material_document_and_classificationASTM A403-82A ASSN STD SINGLE MATERIAL RESPONSE OVERALL A
NSN4730-00-529-5078
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ASTM-A403 · 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
OPERATING PRESSURE: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
SPECIFICATION/STANDARD DATA: 81349-MIL-F-20236 GOVERNMENT SPECIFICATION
FLOW ANGLE: 45.0 DEGREES
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A403 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SECOND RESPONSE
MATERIAL: STEEL COMP 304 OVERALL
CONNECTION STYLE: BEVELED (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
SPECIFICATION/STANDARD DATA81349-MIL-F-20236 GOVERNMENT SPECIFICATION
FLOW ANGLE45.0 DEGREES
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A403 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
MATERIALSTEEL COMP 304 OVERALL
OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
CONNECTION STYLEBEVELED (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED6.000 INCHES ALL ENDS IN
LEG LENGTH3.750 INCHES NOMINAL ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
ANSIB16.9Interchangeable
interchangeable cross-reference
interchangeable
B16-9Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-20236DInterchangeable
interchangeable cross-reference
interchangeable
ASTM-A403Interchangeable
interchangeable cross-reference
interchangeable
ANSI-B16.28 1-1/2IN SRInterchangeable
interchangeable cross-reference
interchangeable
ANSI-B16.5,1-1/2150PSIInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ASTM-A403?
ASTM-A403 is a FLANGE,PIPE.
What parts can replace ASTM-A403?
There are 13 known substitutes for ASTM-A403: ANSIB16.9, B16-9, MIL-F-20236D and 10 more. Substitute compatibility should be verified for your specific system.
Is ASTM-A403 still available?
ASTM-A403 is currently cancelled.
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