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Technical Data Sheet
PartsTable / COMPONENT / 804-19-11
804-19-11 ✓ 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 COMP 303 OVERALL, nut_style: HEXAGON, nut_height: 0.750 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNEF, shoulder_width: 0.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-187-1922, 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
804-19-11
NSN: 4730-01-187-1922
FSC: 4730
CAGE: 13859 — KING NUTRONICS CORPORATION DBA KING NUTRONICS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleHEXAGON
nut_height0.750 INCHES NOMINAL IN
thread_class3B
thread_seriesUNEF
shoulder_width0.125 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats1.125 INCHES NOMINAL IN
nominal_thread_size0.938 INCHES IN
shoulder_step_width0.125 INCHES NOMINAL IN
smallest_inside_diameter0.750 INCHES NOMINAL IN
thread_quantity_per_inch20
NSN4730-01-187-1922
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 804-19-11 · 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 CLASS: 3B
•
SHOULDER STEP WIDTH: 0.125 INCHES NOMINAL IN
•
SHOULDER WIDTH: 0.125 INCHES NOMINAL IN
•
SMALLEST INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
•
WIDTH ACROSS FLATS: 1.125 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL COMP 303 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
SHOULDER STEP WIDTH0.125 INCHES NOMINAL IN
SHOULDER WIDTH0.125 INCHES NOMINAL IN
SMALLEST INSIDE DIAMETER0.750 INCHES NOMINAL IN
NUT STYLEHEXAGON
WIDTH ACROSS FLATS1.125 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD SIZE0.938 INCHES IN
THREAD SERIESUNEF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
80419Interchangeable
interchangeable cross-reference
interchangeable
10554038-19Interchangeable
interchangeable cross-reference
interchangeable
2994341Interchangeable
interchangeable cross-reference
interchangeable
2534903EXInterchangeable
interchangeable cross-reference
interchangeable
804-19-1Interchangeable
interchangeable cross-reference
interchangeable
804-19-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 804-19-11?
804-19-11 is a NUT,UNION.
What parts can replace 804-19-11?
There are 12 known substitutes for 804-19-11: 80419, 10554038-19, 2994341 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 804-19-11?
804-19-11 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-187-1922. 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