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50N3SS ✓ 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 NUT,UNION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 1.062 INCHES NOMINAL IN, thread_class: 2B, thread_series: UN, shoulder_width: 0.312 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-157-6347, 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
50N3SS
NSN: 4730-01-157-6347
FSC: 4730
CAGE: 99565 — ADMIRAL VALVE LLC DBA CPV MANUFACTURING (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height1.062 INCHES NOMINAL IN
thread_class2B
thread_seriesUN
shoulder_width0.312 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats2.000 INCHES NOMINAL IN
nominal_thread_size1.750 INCHES IN
shoulder_step_width0.250 INCHES NOMINAL IN
shoulder_seat_diameter2.000 INCHES NOMINAL IN
smallest_inside_diameter1.628 INCHES NOMINAL IN
NSN4730-01-157-6347
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 50N3SS · 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
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SHOULDER SEAT DIAMETER: 2.000 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 12
•
SMALLEST INSIDE DIAMETER: 1.628 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 1.750 INCHES IN
•
SHOULDER STEP WIDTH: 0.250 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
SHOULDER SEAT DIAMETER2.000 INCHES NOMINAL IN
THREAD QUANTITY PER INCH12
SMALLEST INSIDE DIAMETER1.628 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.750 INCHES IN
SHOULDER STEP WIDTH0.250 INCHES NOMINAL IN
THREAD SERIESUN
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS2.000 INCHES NOMINAL IN
NUT HEIGHT1.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
9524-34BInterchangeable
interchangeable cross-reference
interchangeable
9524Interchangeable
interchangeable cross-reference
interchangeable
06955002103Interchangeable
interchangeable cross-reference
interchangeable
A6UN50-3Interchangeable
Same NIIN cross-reference
interchangeable
A6955.002.103Interchangeable
Same NIIN cross-reference
interchangeable
6N503Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50N3SS?
50N3SS is a NUT,UNION.
What parts can replace 50N3SS?
There are 6 known substitutes for 50N3SS: 9524-34B, 9524, 06955002103 and 3 more. Substitute compatibility should be verified for your specific system.
Is 50N3SS still available?
50N3SS 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