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Technical Data Sheet
PartsTable / COMPONENT / ANSIB16.3
ANSIB16.3 ✓ 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 ANSIB16.3 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-6021, 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
ANSIB16.3
NSN: 4730-00-278-6021
FSC: 4730
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
Part NumberANSIB16.3
NSN4730-00-278-6021
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ANSIB16.3 · 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
•
SPECIFICATION/STANDARD DATA: 80204-B16.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SECOND RESPONSE
•
OPERATING PRESSURE: 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
MATERIAL: IRON OVERALL
•
LEG LENGTH: 1.438 INCHES NOMINAL ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA80204-B16.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
OPERATING PRESSURE2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
MATERIALIRON OVERALL
LEG LENGTH1.438 INCHES NOMINAL ALL ENDS IN
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
013-404Interchangeable
interchangeable cross-reference
interchangeable
508372Interchangeable
interchangeable cross-reference
interchangeable
ANSI B16.3Interchangeable
interchangeable cross-reference
interchangeable
WW-P-521Interchangeable
interchangeable cross-reference
interchangeable
23A46Interchangeable
interchangeable cross-reference
interchangeable
0001346Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ANSIB16.3?
ANSIB16.3 is a ANSIB16.3.
What parts can replace ANSIB16.3?
There are 20 known substitutes for ANSIB16.3: 013-404, 508372, ANSI B16.3 and 17 more. Substitute compatibility should be verified for your specific system.
Is ANSIB16.3 still available?
ANSIB16.3 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