PartsTable
Technical Data Sheet
MS51506B6 ✓ 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, flow_angle: 90.0 DEGREES, leg_length: 0.880 INCHES NOMINAL SECOND END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED INTERNAL PIPE SECOND END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-289-2378, 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
MS51506B6
NSN: 4730-00-289-2378
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
flow_angle90.0 DEGREES
leg_length0.880 INCHES NOMINAL SECOND END IN
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED INTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) SECOND END
surface_treatmentCADMIUM OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.562 INCHES FIRST END IN
maximum_operating_temp121.0 CELSIUS SINGLE RESPONSE DEGC
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
NSN4730-00-289-2378
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51506B6 · 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
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE: 0.125 INCHES SECOND END0.125 INCHES SECOND END IN
MEDIA FOR WHICH DESIGNED: OXYGEN, GASEOUS SECOND RESPONSE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE ELBOWQQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE NUT
SEAT ANGLE: 37.0 DEGREES FIRST END
CONNECTION STYLE: PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.125 INCHES SECOND END0.125 INCHES SECOND END IN
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SECOND RESPONSE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE ELBOWQQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE NUT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE ELBOW
SEAT ANGLE37.0 DEGREES FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SECOND RESPONSEHYDRAULIC FLUID FIRST RESPONSE
SPECIFICATION/STANDARD DATA96906-MS51506 GOVERNMENT STANDARD
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
8-5F5Interchangeable
interchangeable cross-reference
interchangeable
1504Interchangeable
interchangeable cross-reference
interchangeable
1Z206Interchangeable
interchangeable cross-reference
interchangeable
2258K349Interchangeable
interchangeable cross-reference
interchangeable
56109Interchangeable
interchangeable cross-reference
interchangeable
MS51506B6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51506B6?
MS51506B6 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS51506B6?
There are 13 known substitutes for MS51506B6: 8-5F5, 1504, 1Z206 and 10 more. Substitute compatibility should be verified for your specific system.
Is MS51506B6 still available?
MS51506B6 is currently cancelled.
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