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5436K21 — STRAINER,SUCTION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

5436K21: STRAINER,SUCTION.

The STRAINER,SUCTION is a the manufacturer industrial component. Key specifications include material: IRON CAST BODY, body_length: 3.500 INCHES NOMINAL IN, mounting_type: THREADED STUD TOP, style_designator: SUCTION TYPE ROUNDED END, body_outside_diameter: 3.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-272-2943, 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
5436K21
NSN: 4730-01-272-2943
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialIRON CAST BODY
body_length3.500 INCHES NOMINAL IN
mounting_typeTHREADED STUD TOP
style_designatorSUCTION TYPE ROUNDED END
body_outside_diameter3.750 INCHES NOMINAL IN
filtering_element_quantity1
NSN4730-01-272-2943
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5436K21 · 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
•
BODY OUTSIDE DIAMETER: 3.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SUCTION TYPE ROUNDED END
•
FILTERING ELEMENT QUANTITY: 1
•
BODY LENGTH: 3.500 INCHES NOMINAL IN
•
MATERIAL: IRON CAST BODY
•
MOUNTING TYPE: THREADED STUD TOP
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER3.750 INCHES NOMINAL IN
STYLE DESIGNATORSUCTION TYPE ROUNDED END
FILTERING ELEMENT QUANTITY1
BODY LENGTH3.500 INCHES NOMINAL IN
MATERIALIRON CAST BODY
MOUNTING TYPETHREADED STUD TOP
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 5436K21?
5436K21 is a STRAINER,SUCTION.
What is the NSN for 5436K21?
5436K21 is cataloged in the U.S. Government catalog under NSN 4730-01-272-2943. 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.