PartsTable
Technical Data Sheet
MS51525-B8-12 ✓ 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, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: FLARED (TUBE) FIRST END, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-494-6568, 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
MS51525-B8-12
NSN: 4730-00-494-6568
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARED (TUBE) FIRST END
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.750 INCHES FIRST END IN
maximum_operating_temp400.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length1.760 INCHES IN
thread_quantity_per_inch12 SECOND END
thread_series_designatorUNF FIRST END
specification/standard_data96906-MS51525 GOVERNMENT STANDARD
NSN4730-00-494-6568
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51525-B8-12 · 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
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
MAXIMUM OPERATING TEMP: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF
SEAT ANGLE: 37.0 DEGREES FIRST END
SURFACE TREATMENT: CADMIUM OVERALL
FURNISHED ITEMS AND QUANTITY: 1 FLARED SLEEVE AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT
THREAD SERIES DESIGNATOR: UNF FIRST END
SPECIFICATION/STANDARD DATA: 96906-MS51525 GOVERNMENT STANDARD
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
MAXIMUM OPERATING TEMP400.0 FAHRENHEIT SINGLE RESPONSE DEGF
SEAT ANGLE37.0 DEGREES FIRST END
SURFACE TREATMENTCADMIUM OVERALL
FURNISHED ITEMS AND QUANTITY1 FLARED SLEEVE AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT
THREAD SERIES DESIGNATORUNF FIRST END
SPECIFICATION/STANDARD DATA96906-MS51525 GOVERNMENT STANDARD
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
2812Interchangeable
interchangeable cross-reference
interchangeable
36HBInterchangeable
interchangeable cross-reference
interchangeable
2265135-11Interchangeable
interchangeable cross-reference
interchangeable
MS51525A8-12SInterchangeable
interchangeable cross-reference
interchangeable
8-12F5BXSSInterchangeable
interchangeable cross-reference
interchangeable
188C1442P1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51525-B8-12?
MS51525-B8-12 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS51525-B8-12?
There are 18 known substitutes for MS51525-B8-12: 2812, 36HB, 2265135-11 and 15 more. Substitute compatibility should be verified for your specific system.
Is MS51525-B8-12 still available?
MS51525-B8-12 is currently cancelled.
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