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A414241-3 — NUT,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

A414241-3: NUT,UNION.

The NUT,UNION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 0.938 INCHES NOMINAL IN, thread_class: 3B, thread_series: UN, shoulder_width: 0.155 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-904-0876, 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
A414241-3
NSN: 4730-00-904-0876
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.938 INCHES NOMINAL IN
thread_class3B
thread_seriesUN
shoulder_width0.155 INCHES NOMINAL IN
special_featuresNOMINAL PIPE SIZE 0.500
thread_directionRIGHT-HAND
width_across_flats1.375 INCHES NOMINAL IN
nominal_thread_size1.188 INCHES IN
shoulder_step_width0.250 INCHES NOMINAL IN
thread_quantity_per_inch12
NSN4730-00-904-0876
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A414241-3 · 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
•
WIDTH ACROSS FLATS: 1.375 INCHES NOMINAL IN
•
SHOULDER STEP WIDTH: 0.250 INCHES NOMINAL IN
•
SHOULDER WIDTH: 0.155 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
MATERIAL DOCUMENT AND CLASSIFICATION: IL-S-6758,COND D4 MIL SPEC 10TH MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.188 INCHES IN
•
NUT HEIGHT: 0.938 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.375 INCHES NOMINAL IN
SHOULDER STEP WIDTH0.250 INCHES NOMINAL IN
SHOULDER WIDTH0.155 INCHES NOMINAL IN
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONIL-S-6758,COND D4 MIL SPEC 10TH MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.188 INCHES IN
NUT HEIGHT0.938 INCHES NOMINAL IN
SPECIAL FEATURESNOMINAL PIPE SIZE 0.500
NUT STYLEHEXAGON
SUBSTITUTES & CROSS-REFERENCES 1
EPA21000-274Reference document
Same NSN cross-reference
Reference document — NATO reproduction reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A414241-3?
A414241-3 is a NUT,UNION.
What parts can replace A414241-3?
There is 1 known substitute for A414241-3: EPA21000-274. Substitute compatibility should be verified for your specific system.
What is the NSN for A414241-3?
A414241-3 is cataloged in the U.S. Government catalog under NSN 4730-00-904-0876. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.