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ST551MDXX — STRAINER ELEMENT,SEDIMENT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST551MDXX: STRAINER ELEMENT,SEDIMENT.

The STRAINER ELEMENT,SEDIMENT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 FILTERING MEDIUM, body_width: 9.880 INCHES NOMINAL IN, body_height: 20.130 INCHES NOMINAL IN, body_length: 17.380 INCHES NOMINAL IN, temp_rating: 100.0 FAHRENHEIT NOMINAL DEGF, mounting_type: INLET CONNECTION AND OUTLET CONNECTION UPPER SIDE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-553-6922, 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
ST551MDXX
NSN: 4730-01-553-6922
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 4QB42 — HAYWARD INDUSTRIAL PRODUCTS, INC DBA HAYWARD PLASTIC PRODUCTS DIVISION DIV EATON FILTRATION, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 316 FILTERING MEDIUM
body_width9.880 INCHES NOMINAL IN
body_height20.130 INCHES NOMINAL IN
body_length17.380 INCHES NOMINAL IN
temp_rating100.0 FAHRENHEIT NOMINAL DEGF
mounting_typeINLET CONNECTION AND OUTLET CONNECTION UPPER SIDE
special_features2 IN TAPERED PLUG TYPE HIGH QUALITY, PRESSURE RATED PLUG VALVE WITH STRAINING BASKETS, FLAT FACE FLANGE IN
style_designatorCYLINDRICAL
thread_directionRIGHT-HAND
operating_pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
filtering_media_designPERFORATED
mounting_hole_quantity4
NSN4730-01-553-6922
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST551MDXX · 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
SUBSTITUTES & CROSS-REFERENCES 2
SD051085Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
SD053082Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 ST551MDXX?
ST551MDXX is a STRAINER ELEMENT,SEDIMENT.
What parts can replace ST551MDXX?
There are 2 known substitutes for ST551MDXX: SD051085, SD053082. Substitute compatibility should be verified for your specific system.
What is the NSN for ST551MDXX?
ST551MDXX is cataloged in the U.S. Government catalog under NSN 4730-01-553-6922. 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.