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6BU — NIPPLE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6BU: NIPPLE,TUBE.

The NIPPLE,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OR COPPER ALLOY OVERALL, seat_angle: 20.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_style: FLARELESS (TUBE) ALL ENDS, style_designator: FLARELESS W/ BULKHEAD THREADS, nominal_thread_size: 0.562 INCHES CENTER BULKHEAD IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-061-6914, 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
6BU
NSN: 4730-00-061-6914
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OR COPPER ALLOY OVERALL
seat_angle20.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_styleFLARELESS (TUBE) ALL ENDS
style_designatorFLARELESS W/ BULKHEAD THREADS
nominal_thread_size0.562 INCHES CENTER BULKHEAD IN
union_joint_locationFIRST END
nominal_overall_length2.460 INCHES IN
thread_series_designatorUNF CENTER BULKHEAD
furnished_items_and_quantity4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT
nominal_outside_diameter_tube_accommodated0.375 INCHES ALL ENDS IN
NSN4730-00-061-6914
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6BU · 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
•
FURNISHED ITEMS AND QUANTITY: 4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDS
•
UNION JOINT LOCATION: FIRST END
•
NOMINAL OVERALL LENGTH: 2.460 INCHES IN
•
STYLE DESIGNATOR: FLARELESS W/ BULKHEAD THREADS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.562 INCHES CENTER BULKHEAD IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT
CONNECTION STYLEFLARELESS (TUBE) ALL ENDS
UNION JOINT LOCATIONFIRST END
NOMINAL OVERALL LENGTH2.460 INCHES IN
STYLE DESIGNATORFLARELESS W/ BULKHEAD THREADS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.562 INCHES CENTER BULKHEAD IN
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS IN
SEAT ANGLE20.0 DEGREES ALL ENDS
THREAD CLASS3A CENTER BULKHEAD A
SUBSTITUTES & CROSS-REFERENCES 4
6-6WBZBReference document
Same NSN cross-reference
Reference document — Secondary reference
6 BC 6Reference document
Same NSN cross-reference
Reference document — Secondary reference
6 BC 6-BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
600-61Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6BU?
6BU is a NIPPLE,TUBE.
What parts can replace 6BU?
There are 4 known substitutes for 6BU: 6-6WBZB, 6 BC 6, 6 BC 6-B and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6BU?
6BU is cataloged in the U.S. Government catalog under NSN 4730-00-061-6914. 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.