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Technical Data Sheet

581-3/4IN .020PERF — STRAINER,SEDIMENT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

581-3/4IN .020PERF: STRAINER,SEDIMENT.

The STRAINER,SEDIMENT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, body_length: 3.375 INCHES NOMINAL IN, temp_rating: 100.0 FAHRENHEIT MINIMUM AND 750.0 FAHRENHEIT MAXIMUM DEGF, mounting_type: INLET CONNECTION AND OUTLET CONNECTION LINE, style_designator: Y STRAINER W/THREADED COVER, operating_pressure: 1010.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-438-6231, 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
581-3/4IN .020PERF
NSN: 4730-01-438-6231
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76588 — CORE INDUSTRIES INC. DBA MUELLER STEAM SPECIALTY (USA)
SPECIFICATIONS
materialSTEEL BODY
body_length3.375 INCHES NOMINAL IN
temp_rating100.0 FAHRENHEIT MINIMUM AND 750.0 FAHRENHEIT MAXIMUM DEGF
mounting_typeINLET CONNECTION AND OUTLET CONNECTION LINE
style_designatorY STRAINER W/THREADED COVER
operating_pressure1010.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
perforation_diameter0.020 INCHES NOMINAL IN
perforation_quantity625.0 PER SQUARE INCH
filtering_media_designPERFORATED SINGLE FILTERING MEDIA RESPONSE
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
media_for_which_designedWATER
first_intake_connection_typeTHREADED INTERNAL PIPE LINE
NSN4730-01-438-6231
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 581-3/4IN .020PERF · 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 SINGLE FILTERING MEDIA RESPONSE
•
DISTANCE FROM BOTTOM OF BODY TO CENTER OF INLET: 2.812 INCHES NOMINAL IN
•
FIRST INTAKE NOMINAL THREAD SIZE: 0.750 INCHES IN
•
FIRST INTAKE THREAD SERIES DESIGNATOR: NPT
•
TEMP RATING: 100.0 FAHRENHEIT MINIMUM AND 750.0 FAHRENHEIT MAXIMUM DEGF
•
FIRST INTAKE THREAD DIRECTION: RIGHT-HAND
•
FIRST INTAKE CONNECTION TYPE: THREADED INTERNAL PIPE LINE
•
PERFORATION QUANTITY: 625.0 PER SQUARE INCH
TECHNICAL CHARACTERISTICS
FILTERING MEDIA DESIGNPERFORATED SINGLE FILTERING MEDIA RESPONSE
DISTANCE FROM BOTTOM OF BODY TO CENTER OF INLET2.812 INCHES NOMINAL IN
FIRST INTAKE NOMINAL THREAD SIZE0.750 INCHES IN
FIRST INTAKE THREAD SERIES DESIGNATORNPT
TEMP RATING100.0 FAHRENHEIT MINIMUM AND 750.0 FAHRENHEIT MAXIMUM DEGF
FIRST INTAKE THREAD DIRECTIONRIGHT-HAND
FIRST INTAKE CONNECTION TYPETHREADED INTERNAL PIPE LINE
PERFORATION QUANTITY625.0 PER SQUARE INCH
STYLE DESIGNATORY STRAINER W/THREADED COVER
OPERATING PRESSURE1010.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
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 2
581-3/4INReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
581-.75IPSReference 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 581-3/4IN .020PERF?
581-3/4IN .020PERF is a STRAINER,SEDIMENT.
What parts can replace 581-3/4IN .020PERF?
There are 2 known substitutes for 581-3/4IN .020PERF: 581-3/4IN, 581-.75IPS. Substitute compatibility should be verified for your specific system.
What is the NSN for 581-3/4IN .020PERF?
581-3/4IN .020PERF is cataloged in the U.S. Government catalog under NSN 4730-01-438-6231. 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.