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B16-5-1961 — THERMAL RELEASE,CIRCUIT BREAKER

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

B16-5-1961: THERMAL RELEASE,CIRCUIT BREAKER.

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include material: STEEL, thickness: 1.500 INCHES NOMINAL IN, neck_height: 0.750 INCHES NOMINAL IN, socket_depth: 0.688 INCHES NOMINAL IN, flange_diameter: 8.500 INCHES NOMINAL IN, socket_diameter: 2.440 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-066-0150, 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
B16-5-1961
NSN: 4730-00-066-0150
NIINs: 000660150, 002568505, 002568506, 002568507, 002568509, 002568511, 002568512, 002568518, 002898120, 002898121, 002898124, 002898125, 002898127, 002898133, 002898134, 002898136, 002898137, 002898138
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
materialSTEEL
thickness1.500 INCHES NOMINAL IN
neck_height0.750 INCHES NOMINAL IN
socket_depth0.688 INCHES NOMINAL IN
flange_diameter8.500 INCHES NOMINAL IN
socket_diameter2.440 INCHES NOMINAL IN
special_featuresTABLES 19 & 20 ARE IN MILLIMETERS & TABLES F19 & F20 ARE IN INCHES
style_designatorROUND, ONE BOLT HOLE CIRCLE
surface_treatmentPRIMER
bolt_hole_diameter1.000 INCHES NOMINAL IN
bolt_hole_quantity18
raised_face_height0.250 INCHES NOMINAL IN
NSN4730-00-066-0150
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B16-5-1961 · 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
•
FLANGE DIAMETER: 11.000 INCHES NOMINAL IN
•
FACE SEATING SURFACE CONDITION: SERRATED
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 6.000 INCHES IN
•
FLANGE SECTION STYLE: RAISED FACE, WELDING NECK
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
BOLT HOLE DIAMETER: 0.875 INCHES NOMINAL IN
•
NECK HEIGHT: 0.562 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A181,GR1 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER11.000 INCHES NOMINAL IN
FACE SEATING SURFACE CONDITIONSERRATED
NOMINAL PIPE SIZE FOR WHICH DESIGNED6.000 INCHES IN
FLANGE SECTION STYLERAISED FACE, WELDING NECK
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
BOLT HOLE DIAMETER0.875 INCHES NOMINAL IN
NECK HEIGHT0.562 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A181,GR1 ASSN STD SINGLE MATERIAL RESPONSE
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER9.500 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B16-5-1961?
B16-5-1961 is a THERMAL RELEASE,CIRCUIT BREAKER.
What is the NSN for B16-5-1961?
B16-5-1961 is cataloged in the U.S. Government catalog under NSN 4730-00-066-0150. This indicates validated use in U.S. government and defense supply chains.
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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.