PartsTable
Technical Data Sheet
PartsTable / COMPONENT / B-4-SE
B-4-SE ✓ 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,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.031 INCHES NOMINAL SECOND END IN, connection_type: THREADED INTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) SECOND END, nominal_thread_size: 0.250 INCHES ALL ENDS IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-4824, 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
B-4-SE
NSN: 4730-00-278-4824
FSC: 4730
CAGE: 11649 — CAJON CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length1.031 INCHES NOMINAL SECOND END IN
connection_typeTHREADED INTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) SECOND END
nominal_thread_size0.250 INCHES ALL ENDS IN
end_item_identification3810-00-151-4431; 2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR).
thread_series_designatorNPTF ALL ENDS
nondefinitive_spec/std_data43C FIGURE
specification/standard_data81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN4730-00-278-4824
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B-4-SE · 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
•
SPECIFICATION/STANDARD DATA: 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
FLOW ANGLE: 90.0 DEGREES
•
LEG LENGTH: 0.718 INCHES NOMINAL FIRST END IN
•
CONNECTION STYLE: PLAIN (PIPE) SECOND END
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
FLOW ANGLE90.0 DEGREES
LEG LENGTH0.718 INCHES NOMINAL FIRST END IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
LEG LENGTH1.031 INCHES NOMINAL SECOND END IN
CONNECTION STYLEPLAIN (PIPE) FIRST END
NONDEFINITIVE SPEC/STD DATA43C FIGURE
THREAD SERIES DESIGNATORNPTF ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
31-026-1020Interchangeable
interchangeable cross-reference
interchangeable
1250-0053Interchangeable
interchangeable cross-reference
interchangeable
366-6Interchangeable
interchangeable cross-reference
interchangeable
481939Interchangeable
interchangeable cross-reference
interchangeable
197737Interchangeable
interchangeable cross-reference
interchangeable
31411Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-4-SE?
B-4-SE is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace B-4-SE?
There are 31 known substitutes for B-4-SE: 31-026-1020, 1250-0053, 366-6 and 28 more. Substitute compatibility should be verified for your specific system.
Is B-4-SE still available?
B-4-SE 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