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PartsTable / COMPONENT / 12-R5BU-SS
12-R5BU-SS ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED EXTERNAL TUBE FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-031-0263, 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
12-R5BU-SS
NSN: 4730-01-031-0263
FSC: 4730
CAGE: 30780 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV TUBE FITTINGS DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED EXTERNAL TUBE FIRST END
NSN4730-01-031-0263
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 12-R5BU-SS · 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 TUBE COUPLING NUT W/SLEEVE AND 1 PREFORMED PACKING
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES THIRD END IN
•
LEG LENGTH: 1.578 INCHES NOMINAL FIRST END IN
•
SEAT ANGLE: 12.0 DEGREES THIRD END
•
THREAD QUANTITY PER INCH: 12 ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
FURNISHED ITEMS AND QUANTITY1 TUBE COUPLING NUT W/SLEEVE AND 1 PREFORMED PACKING
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES THIRD END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES FIRST END IN
LEG LENGTH1.578 INCHES NOMINAL FIRST END IN
LEG LENGTH1.578 INCHES NOMINAL THIRD END IN
SEAT ANGLE12.0 DEGREES THIRD END
THREAD QUANTITY PER INCH12 ALL ENDS
LEG LENGTH1.938 INCHES NOMINAL SECOND END IN
THREAD CLASS2A ALL ENDS A
NOMINAL THREAD SIZE1.062 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
C5515X20Interchangeable
interchangeable cross-reference
interchangeable
2503-20-20Interchangeable
interchangeable cross-reference
interchangeable
107A-0091Interchangeable
interchangeable cross-reference
interchangeable
4730PL1604002Interchangeable
interchangeable cross-reference
interchangeable
A408444-1Interchangeable
interchangeable cross-reference
interchangeable
4730010365064Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12-R5BU-SS?
12-R5BU-SS is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 12-R5BU-SS?
There are 19 known substitutes for 12-R5BU-SS: C5515X20, 2503-20-20, 107A-0091 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12-R5BU-SS?
12-R5BU-SS is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-031-0263. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026