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MS51519B12 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS51519B12: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARED W/ GASKET SEAL (BOSS) ALL ENDS, style_designator: FLARED W/ CENTER WRENCHING FACILITY. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-278-3208, 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
MS51519B12
NSN: 4730-00-278-3208
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES ALL ENDS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED W/ GASKET SEAL (BOSS) ALL ENDS
style_designatorFLARED W/ CENTER WRENCHING FACILITY
surface_treatmentCADMIUM OVERALL
nominal_thread_size1.062 INCHES ALL ENDS IN
nominal_overall_length2.160 INCHES IN
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUN ALL ENDS
specification/standard_data96906-MS51519 GOVERNMENT STANDARD
NSN4730-00-278-3208
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51519B12 · 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
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.160 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: FLARED W/ CENTER WRENCHING FACILITY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 1.062 INCHES ALL ENDS IN
•
SEAT ANGLE: 37.0 DEGREES ALL ENDS
•
SPECIFICATION/STANDARD DATA: 96906-MS51519 GOVERNMENT STANDARD
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH2.160 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
STYLE DESIGNATORFLARED W/ CENTER WRENCHING FACILITY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES ALL ENDS IN
NOMINAL THREAD SIZE1.062 INCHES ALL ENDS IN
SEAT ANGLE37.0 DEGREES ALL ENDS
SPECIFICATION/STANDARD DATA96906-MS51519 GOVERNMENT STANDARD
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS2A ALL ENDS A
SUBSTITUTES & CROSS-REFERENCES 7
LT3-45Reference document
Same NSN cross-reference
Reference document — Secondary reference
P66828Reference document
Same NSN cross-reference
Reference document — Secondary reference
12LHTXSReference document
Same NSN cross-reference
Reference document — Secondary reference
87F8Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-18866Reference document
Same NSN cross-reference
Reference document — Secondary reference
816427Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51519B12?
MS51519B12 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS51519B12?
There are 7 known substitutes for MS51519B12: LT3-45, P66828, 12LHTXS and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51519B12?
MS51519B12 is cataloged in the U.S. Government catalog under NSN 4730-00-278-3208. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.