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R BC 4 ✓ Verified by PartsTable
APC · 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 genuine APC Replacement Battery Cartridge (RBC) is tested and certified for 100% compatibility to the the specific APC UPS. This lead-acid RBC has a lifetime of three to five years which offers reliable support and extends the useful life of your UPS. The APC RBC comes fully assembled and ready for use.

To see the compatible UPS list, please click View Compatible UPS Modelsbutton in Get Support Section at APC.com This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-061-6912, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
R BC 4
NSN: 4730-00-061-6912
FSC: 4730
CAGE: 54938 — PARKER-HANNIFIN CORPORATION DIV INSTRUMENTATION PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle20.0 DEGREES ALL ENDS
thread_class2A ALL ENDS A
bore_diameter0.2500 INCHES NOMINAL IN
alignment_typeRIGID
surface_finishGROUND
connection_styleFLARELESS (TUBE) ALL ENDS
inner_ring_width0.3750 INCHES NOMINAL IN
outer_ring_width0.2500 INCHES NOMINAL IN
style_designatorAIRFRAME, HARDENED AND GROUND, NON-SEPARABLE
surface_treatmentCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
nominal_thread_size0.438 INCHES CENTER BULKHEAD IN
NSN4730-00-061-6912
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R BC 4 · APC ⚠ 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
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
•
MATERIAL: COPPER ALLOY OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
NOMINAL OVERALL LENGTH: 2.270 INCHES IN
•
SEAT ANGLE: 20.0 DEGREES ALL ENDS
•
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
•
FURNISHED ITEMS AND QUANTITY: 4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT AND 1 LOCKNUT
•
STYLE DESIGNATOR: FLARELESS W/ OFFSET WRENCHING FACILITY
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF ALL ENDS
MATERIALCOPPER ALLOY OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
NOMINAL OVERALL LENGTH2.270 INCHES IN
SEAT ANGLE20.0 DEGREES ALL ENDS
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
FURNISHED ITEMS AND QUANTITY4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT AND 1 LOCKNUT
STYLE DESIGNATORFLARELESS W/ OFFSET WRENCHING FACILITY
NOMINAL THREAD SIZE0.438 INCHES CENTER BULKHEAD IN
CONNECTION STYLEFLARELESS (TUBE) ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
3614ANG25Interchangeable
interchangeable cross-reference
interchangeable
AA-3614Interchangeable
interchangeable cross-reference
interchangeable
3614MILG3278AInterchangeable
interchangeable cross-reference
interchangeable
583RH-3/16-3/8SInterchangeable
interchangeable cross-reference
interchangeable
JF-6Interchangeable
interchangeable cross-reference
interchangeable
56801Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R BC 4?
R BC 4 is a BEARING,ROLLER,NEEDLE manufactured by APC.
What parts can replace R BC 4?
There are 22 known substitutes for R BC 4: 3614ANG25, AA-3614, 3614MILG3278A and 19 more. Substitute compatibility should be verified for your specific system.
Is R BC 4 still available?
R BC 4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026