B16.5-1981 — THERMAL RELEASE,CIRCUIT BREAKER

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

B16.5-1981: THERMAL RELEASE,CIRCUIT BREAKER.

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include material: COPPER ALLOY AND NICKEL ALLOY, stem_type: NONRISING, thickness: 0.560 INCHES NOMINAL IN, flow_angle: 90.0 DEGREES, leg_length: 2.120 INCHES NOMINAL FIRST END IN, sweep_type: SHORT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-555-1571, 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

B16.5-1981

NSN: 4730-00-555-1571
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)

SPECIFICATIONS

material	COPPER ALLOY AND NICKEL ALLOY
stem_type	NONRISING
thickness	0.560 INCHES NOMINAL IN
flow_angle	90.0 DEGREES
leg_length	2.120 INCHES NOMINAL FIRST END IN
sweep_type	SHORT
valve_size	0.500 INCHES IN
bonnet_type	INSIDE SCREW
neck_height	2.000 INCHES NOMINAL IN
temp_rating	775.0 FAHRENHEIT NOMINAL DEGF
construction	SEAMLESS
flange_shape	ROUND WITH HOLES ALL ENDS
NSN	4730-00-555-1571

COMPONENT DIAGRAM

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 2

B16.5Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

556-1-2X6INCHSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B16.5-1981?

B16.5-1981 is a THERMAL RELEASE,CIRCUIT BREAKER.

What parts can replace B16.5-1981?

There are 2 known substitutes for B16.5-1981: B16.5, 556-1-2X6INCH. Substitute compatibility should be verified for your specific system.

What is the NSN for B16.5-1981?

B16.5-1981 is cataloged in the U.S. Government catalog under NSN 4730-00-555-1571. This indicates validated use in U.S. government and defense supply chains.

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