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Technical Data Sheet

ST521MEXXSPEC 5/64IN — ST521MEXXSPEC 5/64IN

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST521MEXXSPEC 5/64IN: ST521MEXXSPEC 5/64IN.

The ST521MEXXSPEC 5/64IN is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4730-01-454-7575, 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
ST521MEXXSPEC 5/64IN
NSN: 4730-01-454-7575
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 73124 — HAYWARDINDL. PRODUCTS, INC. (USA)
SPECIFICATIONS
Part NumberST521MEXXSPEC 5/64IN
NSN4730-01-454-7575
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST521MEXXSPEC 5/64IN · 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
•
FILTERING MEDIA DESIGN: PERFORATED
•
MATERIAL: NICKEL ALLOY
•
PERFORATION DIAMETER: 0.078 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FILTERING MEDIA DESIGNPERFORATED
END ITEM IDENTIFICATIONARLEIGH BURKE CLASS DDG.
MATERIALNICKEL ALLOY
PERFORATION DIAMETER0.078 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
ST521MEXXSPEC=Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 ST521MEXXSPEC 5/64IN?
ST521MEXXSPEC 5/64IN is a ST521MEXXSPEC 5/64IN.
What parts can replace ST521MEXXSPEC 5/64IN?
There is 1 known substitute for ST521MEXXSPEC 5/64IN: ST521MEXXSPEC=. Substitute compatibility should be verified for your specific system.
What is the NSN for ST521MEXXSPEC 5/64IN?
ST521MEXXSPEC 5/64IN is cataloged in the U.S. Government catalog under NSN 4730-01-454-7575. 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.