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B-812-1 — NUT,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

B-812-1: NUT,TUBE COUPLING.

The NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 0.688 INCHES NOMINAL IN, fabrication_method: MACHINED, width_across_flats: 0.875 INCHES NOMINAL IN, nominal_tube_outside_diameter: 0.500 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-061-5329, 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
B-812-1
NSN: 4730-01-061-5329
NIINs: 010615329, 014736848, 015953514
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height0.688 INCHES NOMINAL IN
fabrication_methodMACHINED
width_across_flats0.875 INCHES NOMINAL IN
nominal_tube_outside_diameter0.500 INCHES IN
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
NSN4730-01-061-5329
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B-812-1 · 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: 0.875 INCHES NOMINAL IN
•
NUT HEIGHT: 0.688 INCHES NOMINAL IN
•
NUT STYLE: TUBE COUPLING
•
MATERIAL: COPPER ALLOY OVERALL
•
FABRICATION METHOD: MACHINED
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.500 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.875 INCHES NOMINAL IN
NUT HEIGHT0.688 INCHES NOMINAL IN
NUT STYLETUBE COUPLING
MATERIALCOPPER ALLOY OVERALL
FABRICATION METHODMACHINED
NOMINAL TUBE OUTSIDE DIAMETER0.500 INCHES IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B-812-1?
B-812-1 is a NUT,TUBE COUPLING.
What is the NSN for B-812-1?
B-812-1 is cataloged in the U.S. Government catalog under NSN 4730-01-061-5329. 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.