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ST521MHXX — STRAINER ELEMENT,SEDIMENT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST521MHXX: STRAINER ELEMENT,SEDIMENT.

The STRAINER ELEMENT,SEDIMENT is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, style_designator: CYLINDRICAL, end_connection_type: FLANGED FIRST END, perforation_diameter: 0.156 INCHES NOMINAL IN, perforation_quantity: 33.0 PER SQUARE INCH, filtering_media_design: PERFORATED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-440-7652, 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
ST521MHXX
NSN: 4730-01-440-7652
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 73124 — HAYWARDINDL. PRODUCTS, INC. (USA)
SPECIFICATIONS
materialNICKEL ALLOY
style_designatorCYLINDRICAL
end_connection_typeFLANGED FIRST END
perforation_diameter0.156 INCHES NOMINAL IN
perforation_quantity33.0 PER SQUARE INCH
filtering_media_designPERFORATED
end_item_identificationMARS CLASS AFS
strainer_model_number_for_which_designed50
NSN4730-01-440-7652
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST521MHXX · 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
•
END CONNECTION TYPE: PLAIN SECOND END
•
PERFORATION QUANTITY: 33.0 PER SQUARE INCH
•
STYLE DESIGNATOR: CYLINDRICAL
•
STRAINER MODEL NUMBER FOR WHICH DESIGNED: 50
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
FILTERING MEDIA DESIGNPERFORATED
END CONNECTION TYPEPLAIN SECOND END
END CONNECTION TYPEFLANGED FIRST END
PERFORATION QUANTITY33.0 PER SQUARE INCH
STYLE DESIGNATORCYLINDRICAL
STRAINER MODEL NUMBER FOR WHICH DESIGNED50
END ITEM IDENTIFICATIONMARS CLASS AFS
MATERIALNICKEL ALLOY
PERFORATION DIAMETER0.156 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 ST521MHXX?
ST521MHXX is a STRAINER ELEMENT,SEDIMENT.
What is the NSN for ST521MHXX?
ST521MHXX is cataloged in the U.S. Government catalog under NSN 4730-01-440-7652. 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.