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ANSIB16.5 — THERMAL RELEASE,CIRCUIT BREAKER

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ANSIB16.5: THERMAL RELEASE,CIRCUIT BREAKER.

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include material: STEEL, thickness: 0.690 INCHES NOMINAL IN, neck_height: 0.190 INCHES NOMINAL IN, flange_diameter: 5.000 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 0.620 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-174-5940, 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
ANSIB16.5
NSN: 4730-00-174-5940
NIINs: 001745940, 010128440, 010159327, 010159328, 010159329, 010163042, 010166383, 010237769, 010240076, 010285249, 010466638, 010483861, 010511962, 010511963, 011198121, 012390242, 012559620, 012982250, 013228168, 013743412, 013743413, 013743414, 013743415, 013743416, 013743417, 013743418, 013743419, 013743420, 013743421, 013743422, 013743423, 013743424, 013743425, 013743426, 013743427, 013743428, 013743429, 013743430, 013743431, 013743432, 013743433, 013743434, 013743435, 013758721, 013758722, 013767094, 013767095, 013881043, 013881063, 013881087, 013881101, 013881133, 013892629, 014649323
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
materialSTEEL
thickness0.690 INCHES NOMINAL IN
neck_height0.190 INCHES NOMINAL IN
flange_diameter5.000 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.620 INCHES NOMINAL IN
bolt_hole_quantity4
bolt_circle_diameter3.880 INCHES NOMINAL IN
flange_section_stylePLAIN FACE, WELDING NECK
face_seating_surface_conditionMACHINED
material_document_and_classificationASTM-A105 NATIONAL SPEC SINGLE MATERIAL RESPONSE
nominal_pipe_size_for_which_designed1.500 INCHES IN
NSN4730-00-174-5940
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ANSIB16.5 · 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
•
SOCKET DIAMETER: 1.065 INCHES NOMINAL IN
•
FLANGE DIAMETER: 4.625 INCHES NOMINAL IN
•
FACE SEATING SURFACE CONDITION: MACHINED
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.750 INCHES IN
•
SOCKET DEPTH: 0.438 INCHES NOMINAL IN
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 850.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT WATER DEGF
•
OPERATING PRESSURE AND TYPE: 600.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 1000.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
FLANGE SECTION STYLE: RAISED FACE, SOCKET NECK
TECHNICAL CHARACTERISTICS
SOCKET DIAMETER1.065 INCHES NOMINAL IN
FLANGE DIAMETER4.625 INCHES NOMINAL IN
FACE SEATING SURFACE CONDITIONMACHINED
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.750 INCHES IN
SOCKET DEPTH0.438 INCHES NOMINAL IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED850.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT WATER DEGF
OPERATING PRESSURE AND TYPE600.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 1000.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
FLANGE SECTION STYLERAISED FACE, SOCKET NECK
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
BOLT HOLE DIAMETER0.688 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
5000S4823-64496Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ANSIB16.5?
ANSIB16.5 is a THERMAL RELEASE,CIRCUIT BREAKER.
What parts can replace ANSIB16.5?
There is 1 known substitute for ANSIB16.5: 5000S4823-64496. Substitute compatibility should be verified for your specific system.
What is the NSN for ANSIB16.5?
ANSIB16.5 is cataloged in the U.S. Government catalog under NSN 4730-00-174-5940. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.