PartsTable
Technical Data Sheet
MS51504A8-12S ✓ 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 COMP 316 OR STEEL COMP 303 OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.422 INCHES NOMINAL FIRST END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_style: PLAIN (PIPE) SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-115-3773, 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
MS51504A8-12S
NSN: 4730-00-115-3773
FSC: 4730
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OR STEEL COMP 303 OVERALL
flow_angle90.0 DEGREES
leg_length1.422 INCHES NOMINAL FIRST END IN
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_stylePLAIN (PIPE) SECOND END
surface_treatmentPASSIVATE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES ALL ENDS IN
maximum_operating_temp-65.0 FAHRENHEIT SECOND RESPONSE DEGF
media_for_which_designedHYDRAULIC FLUID FIRST RESPONSE
thread_series_designatorUNF FIRST END
NSN4730-00-115-3773
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51504A8-12S · 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
MEDIA FOR WHICH DESIGNED: AIR SECOND RESPONSE
SURFACE TREATMENT: PASSIVATE OVERALL
FURNISHED ITEMS AND QUANTITY: 1 TUBE COUPLING NUT W/SLEEVE
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP: -65.0 FAHRENHEIT SECOND RESPONSE DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MEDIA FOR WHICH DESIGNEDAIR SECOND RESPONSE
SURFACE TREATMENTPASSIVATE OVERALL
FURNISHED ITEMS AND QUANTITY1 TUBE COUPLING NUT W/SLEEVE
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID FIRST RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP-65.0 FAHRENHEIT SECOND RESPONSE DEGF
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FLOW ANGLE90.0 DEGREES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
4-6 080102SAInterchangeable
interchangeable cross-reference
interchangeable
6138952Interchangeable
interchangeable cross-reference
interchangeable
4-6FBU-SSInterchangeable
interchangeable cross-reference
interchangeable
6138952-111Interchangeable
interchangeable cross-reference
interchangeable
926320Interchangeable
interchangeable cross-reference
interchangeable
3010606-6-6-6C-60.00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51504A8-12S?
MS51504A8-12S is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS51504A8-12S?
There are 25 known substitutes for MS51504A8-12S: 4-6 080102SA, 6138952, 4-6FBU-SS and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51504A8-12S?
MS51504A8-12S is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-115-3773. This indicates validated use in U.S. government and defense supply chains.
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