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221-01 — Technical Data Sheet

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Dujardin · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The STRAINER ELEMENT,SEDIMENT is a Dujardin industrial component. Key specifications include phase: THREE, length: 7.741 INCHES NOMINAL IN, bed_type: SCREW, material: ALUMINUM ALLOY, tip_type: FELT CHISEL OR FINE, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-00-051-9559, 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
221-01
NSN: 4730-00-051-9559
FSC: 4730
CAGE: 31844 — DOMS, INCORPORATED DIV DOMS INCORPORATED (USA)
SPECIFICATIONS
phaseTHREE
length7.741 INCHES NOMINAL IN
bed_typeSCREW
materialALUMINUM ALLOY
tip_typeFELT CHISEL OR FINE
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
ink_colorBLUE
ink_gradeFLUORESCENT
mesh_size80.0
pocket_clipPROVIDED
current_typeAC
power_sourceELECTRIC MOTOR
NSN4730-00-051-9559
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 221-01 · Dujardin ⚠ 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
•
END CONNECTION TYPE: THREADED FIRST END
•
NOMINAL THREAD SIZE: 1.250 INCHES FIRST END IN
•
ELEMENT OUTSIDE DIAMETER: 3.350 INCHES NOMINAL IN
•
SECOND END FLANGE THICKNESS: 0.462 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
THREAD SERIES DESIGNATOR: NPT FIRST END
•
WIRE DIAMETER: 0.00050 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
END CONNECTION TYPETHREADED FIRST END
NOMINAL THREAD SIZE1.250 INCHES FIRST END IN
ELEMENT OUTSIDE DIAMETER3.350 INCHES NOMINAL IN
SECOND END FLANGE THICKNESS0.462 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
THREAD SERIES DESIGNATORNPT FIRST END
END CONNECTION TYPEFLANGED SECOND END
WIRE DIAMETER0.00050 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
MESH SIZE80.0
LENGTH7.741 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
42TB-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
22-401InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
22-433InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
408428-10InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
154675InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
154682InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 221-01?
221-01 is a STRAINER ELEMENT,SEDIMENT manufactured by Dujardin.
What parts can replace 221-01?
There are 15 known substitutes for 221-01: 42TB-1, 22-401, 22-433 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 221-01?
221-01 is cataloged in the Federal Logistics Information System under NSN 4730-00-051-9559. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026