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Technical Data Sheet
PartsTable / COMPONENT / MS51532B8S
MS51532B8S ✓ 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 CORROSION RESISTING OVERALL, seat_angle: 37.0 DEGREES, thread_class: 2B INTERNAL, connection_style: FLARE, style_designator: CAP, thread_direction: RIGHT-HAND INTERNAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-044-2446, 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
MS51532B8S
NSN: 4730-01-044-2446
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
seat_angle37.0 DEGREES
thread_class2B INTERNAL
connection_styleFLARE
style_designatorCAP
thread_directionRIGHT-HAND INTERNAL
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.750 INCHES INTERNAL IN
thread_series_designatorUNF INTERNAL
specification/standard_data96906-MS51532 GOVERNMENT STANDARD
tube_outside_diameter_for_which_designed0.500 INCHES NOMINAL IN
NSN4730-01-044-2446
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51532B8S · 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
•
THREAD DIRECTION: RIGHT-HAND INTERNAL
•
STYLE DESIGNATOR: CAP
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
THREAD SERIES DESIGNATOR: UNF INTERNAL
•
SEAT ANGLE: 37.0 DEGREES
•
NOMINAL THREAD SIZE: 0.750 INCHES INTERNAL IN
•
SPECIFICATION/STANDARD DATA: 96906-MS51532 GOVERNMENT STANDARD
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND INTERNAL
STYLE DESIGNATORCAP
MATERIALSTEEL CORROSION RESISTING OVERALL
THREAD SERIES DESIGNATORUNF INTERNAL
SEAT ANGLE37.0 DEGREES
NOMINAL THREAD SIZE0.750 INCHES INTERNAL IN
SPECIFICATION/STANDARD DATA96906-MS51532 GOVERNMENT STANDARD
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.500 INCHES NOMINAL IN
THREAD CLASS2B INTERNAL
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
12FNTXSSInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-18866Interchangeable
interchangeable cross-reference
interchangeable
8-FNTX-SSInterchangeable
interchangeable cross-reference
interchangeable
AJ8Z-2Interchangeable
interchangeable cross-reference
interchangeable
29354Interchangeable
interchangeable cross-reference
interchangeable
2265134-8Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51532B8S?
MS51532B8S is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS51532B8S?
There are 7 known substitutes for MS51532B8S: 12FNTXSS, MIL-DTL-18866, 8-FNTX-SS and 4 more. Substitute compatibility should be verified for your specific system.
Is MS51532B8S still available?
MS51532B8S 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