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U12-75-681SH — PISTON,AIR BRAKE SYSTEM

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

U12-75-681SH: PISTON,AIR BRAKE SYSTEM.

The PISTON,AIR BRAKE SYSTEM is a the manufacturer industrial component. Key specifications include material: STEEL BOLT, temp_rating: 550.0 FAHRENHEIT DEGF, overall_width: 0.750 INCHES MINIMUM IN, inside_diameter: 6.810 INCHES NOMINAL IN, style_designator: BAND, surface_treatment: CADMIUM NUT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-857-2471, 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
U12-75-681SH
NSN: 4730-00-857-2471
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 94581 — V I J CORP DIV NATIONAL UTILITIES COMPANY (USA)
SPECIFICATIONS
materialSTEEL BOLT
temp_rating550.0 FAHRENHEIT DEGF
overall_width0.750 INCHES MINIMUM IN
inside_diameter6.810 INCHES NOMINAL IN
style_designatorBAND
surface_treatmentCADMIUM NUT
fastening_device_typeSELF-LOCKING HEXAGON NUT
material_document_and_classificationMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE BAND
NSN4730-00-857-2471
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: U12-75-681SH · 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
•
TEMP RATING: 550.0 FAHRENHEIT DEGF
•
FASTENING DEVICE TYPE: SELF-LOCKING HEXAGON NUT
•
STYLE DESIGNATOR: BAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE BAND
•
INSIDE DIAMETER: 6.810 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM NUT
TECHNICAL CHARACTERISTICS
TEMP RATING550.0 FAHRENHEIT DEGF
FASTENING DEVICE TYPESELF-LOCKING HEXAGON NUT
STYLE DESIGNATORBAND
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE BAND
OVERALL WIDTH0.750 INCHES MINIMUM IN
INSIDE DIAMETER6.810 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM NUT
SURFACE TREATMENTCADMIUM BOLT
SURFACE TREATMENTPASSIVATE BAND
MATERIALSTEEL NUT
SUBSTITUTES & CROSS-REFERENCES 1
242000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is U12-75-681SH?
U12-75-681SH is a PISTON,AIR BRAKE SYSTEM.
What parts can replace U12-75-681SH?
There is 1 known substitute for U12-75-681SH: 242000. Substitute compatibility should be verified for your specific system.
What is the NSN for U12-75-681SH?
U12-75-681SH is cataloged in the U.S. Government catalog under NSN 4730-00-857-2471. 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.