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Technical Data Sheet
PartsTable / COMPONENT / 193581
193581 ✓ 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 VALVE,BRAKE PNEUMATIC is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, nut_style: TUBE COUPLING, nut_height: 1.710 INCHES NOMINAL IN, seat_angle: 45.00 DEGREES NOMINAL, thread_class: 3A A, thread_series: UN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-031-6334, 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
193581
NSN: 4730-00-031-6334
FSC: 4730
CAGE: 11449 — TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
nut_styleTUBE COUPLING
nut_height1.710 INCHES NOMINAL IN
seat_angle45.00 DEGREES NOMINAL
thread_class3A A
thread_seriesUN
thread_directionRIGHT-HAND
length_to_shoulder1.147 INCHES NOMINAL IN
width_across_flats2.002 INCHES NOMINAL IN
nominal_thread_size1.750 INCHES IN
smallest_inside_diameter1.370 INCHES NOMINAL IN
thread_quantity_per_inch12
NSN4730-00-031-6334
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 193581 · 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
•
SEAT ANGLE: 45.00 DEGREES NOMINAL
•
NOMINAL TUBE OUTSIDE DIAMETER: 1.250 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
LENGTH TO SHOULDER: 1.147 INCHES NOMINAL IN
•
NUT STYLE: TUBE COUPLING
•
THREAD QUANTITY PER INCH: 12
•
THREAD SERIES: UN
•
NOMINAL THREAD SIZE: 1.750 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE45.00 DEGREES NOMINAL
NOMINAL TUBE OUTSIDE DIAMETER1.250 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
LENGTH TO SHOULDER1.147 INCHES NOMINAL IN
NUT STYLETUBE COUPLING
THREAD QUANTITY PER INCH12
THREAD SERIESUN
NOMINAL THREAD SIZE1.750 INCHES IN
SMALLEST INSIDE DIAMETER1.370 INCHES NOMINAL IN
NUT HEIGHT1.710 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
225834Interchangeable
interchangeable cross-reference
interchangeable
193581Interchangeable
interchangeable cross-reference
interchangeable
101904Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 193581?
193581 is a VALVE,BRAKE PNEUMATIC.
What parts can replace 193581?
There are 3 known substitutes for 193581: 225834, 193581, 101904. Substitute compatibility should be verified for your specific system.
What is the NSN for 193581?
193581 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-031-6334. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026