PartsTable
Technical Data Sheet

1BU-316/102 — NIPPLE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1BU-316/102: NIPPLE,TUBE.

The NIPPLE,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, leg_length: 0.540 INCHES NOMINAL FIRST END IN, seat_angle: 12.0 DEGREES ALL ENDS, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARELESS (TUBE) ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-046-8531, 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
1BU-316/102
NSN: 4730-01-046-8531
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
leg_length0.540 INCHES NOMINAL FIRST END IN
seat_angle12.0 DEGREES ALL ENDS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDS
style_designatorFLARELESS W/ BULKHEAD THREADS
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.190 INCHES ALL ENDS IN
nominal_overall_length0.963 INCHES IN
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity1 BULKHEAD NUT AND 2 TUBE COUPLING NUT AND 4 FERRULE SLEEVE
NSN4730-01-046-8531
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1BU-316/102 · 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: 1 BULKHEAD NUT AND 2 TUBE COUPLING NUT AND 4 FERRULE SLEEVE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 0.963 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: FLARELESS W/ BULKHEAD THREADS
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A479,TYPE 316,CONDITION A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.062 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 BULKHEAD NUT AND 2 TUBE COUPLING NUT AND 4 FERRULE SLEEVE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARELESS (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH0.963 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
STYLE DESIGNATORFLARELESS W/ BULKHEAD THREADS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A479,TYPE 316,CONDITION A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.062 INCHES ALL ENDS IN
LEG LENGTH0.265 INCHES NOMINAL SECOND END IN
LEG LENGTH0.540 INCHES NOMINAL FIRST END 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 2
639AS1563Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
588.10-200000-005Same 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
Ready to buy 1BU-316/102?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1BU-316/102?
1BU-316/102 is a NIPPLE,TUBE.
What parts can replace 1BU-316/102?
There are 2 known substitutes for 1BU-316/102: 639AS1563, 588.10-200000-005. Substitute compatibility should be verified for your specific system.
What is the NSN for 1BU-316/102?
1BU-316/102 is cataloged in the U.S. Government catalog under NSN 4730-01-046-8531. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1BU-316/102

✓ 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.