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A6UN00-2 — NUT,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

A6UN00-2: NUT,UNION.

The NUT,UNION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 1.062 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, shoulder_width: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-070-7657, 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
A6UN00-2
NSN: 4730-01-070-7657
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 4Y217 — AMERICAN PIPING ACCESSORIES CO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height1.062 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
shoulder_width0.312 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats1.625 INCHES NOMINAL IN
nominal_thread_size1.375 INCHES IN
shoulder_step_width0.250 INCHES NOMINAL IN
shoulder_seat_diameter1.375 INCHES NOMINAL IN
smallest_inside_diameter1.003 INCHES NOMINAL IN
NSN4730-01-070-7657
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A6UN00-2 · 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: 1.625 INCHES NOMINAL IN
•
SHOULDER STEP WIDTH: 0.250 INCHES NOMINAL IN
•
SHOULDER WIDTH: 0.312 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.375 INCHES IN
•
NUT HEIGHT: 1.062 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.625 INCHES NOMINAL IN
SHOULDER STEP WIDTH0.250 INCHES NOMINAL IN
SHOULDER WIDTH0.312 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.375 INCHES IN
NUT HEIGHT1.062 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH12
SUBSTITUTES & CROSS-REFERENCES 4
NS-064-0006-3/8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B-4019Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6N502Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GS6085-13Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A6UN00-2?
A6UN00-2 is a NUT,UNION.
What parts can replace A6UN00-2?
There are 4 known substitutes for A6UN00-2: NS-064-0006-3/8, B-4019, 6N502 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6UN00-2?
A6UN00-2 is cataloged in the U.S. Government catalog under NSN 4730-01-070-7657. 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.