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AS15721-3 — FITTING,LUBRICATION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AS15721-3: FITTING,LUBRICATION.

The FITTING,LUBRICATION is a the manufacturer industrial component. Key specifications include angle: 30.0 DEGREES, height: 1.125 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING OVERALL, shank_length: 0.375 INCHES NOMINAL IN, special_features: SURFACE OR THROAT LOCATED BALL CHECK VALVE, style_designator: ANGLE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-245-7703, 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
AS15721-3
NSN: 4730-00-245-7703
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
angle30.0 DEGREES
height1.125 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING OVERALL
shank_length0.375 INCHES NOMINAL IN
special_featuresSURFACE OR THROAT LOCATED BALL CHECK VALVE
style_designatorANGLE
width_across_flats0.438 INCHES NOMINAL IN
nominal_thread_size0.125 INCHES IN
pressure_relief_methodPORT END
thread_quantity_per_inch27
assembly_clearance_radius0.375 INCHES MAXIMUM IN
screw_thread_series_designatorPTF-SPL EXTRA SHORT
NSN4730-00-245-7703
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS15721-3 · 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: 0.438 INCHES NOMINAL IN
•
ASSEMBLY CLEARANCE RADIUS: 0.375 INCHES MAXIMUM IN
•
SHANK LENGTH: 0.375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ANGLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
PRESSURE RELIEF METHOD: PORT END
•
HEIGHT: 1.125 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.438 INCHES NOMINAL IN
ASSEMBLY CLEARANCE RADIUS0.375 INCHES MAXIMUM IN
SHANK LENGTH0.375 INCHES NOMINAL IN
STYLE DESIGNATORANGLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.125 INCHES IN
PRESSURE RELIEF METHODPORT END
HEIGHT1.125 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
ANGLE30.0 DEGREES
SPECIAL FEATURESSURFACE OR THROAT LOCATED BALL CHECK VALVE
SUBSTITUTES & CROSS-REFERENCES 4
SAE-AS35411Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AS15721Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS15721-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS35411Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS15721-3?
AS15721-3 is a FITTING,LUBRICATION.
What parts can replace AS15721-3?
There are 4 known substitutes for AS15721-3: SAE-AS35411, AS15721, MS15721-3 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS15721-3?
AS15721-3 is cataloged in the U.S. Government catalog under NSN 4730-00-245-7703. This indicates validated use in U.S. government and defense supply chains.
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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.