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U3921 — Technical Data Sheet

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— · 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 the manufacturer industrial component. Key specifications include length: 4.875 INCHES NOMINAL IN, material: WOOL, style_designator: CYLINDRICAL, end_connection_type: PLAIN FIRST END, filtering_media_design: MOLDED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-00-949-0624, 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
U3921
NSN: 4730-00-949-0624
FSC: 4730
CAGE: 15472 — SOLVENTUM PURIFICATION INC. DIV FILTRATION AND SEPARATION DIVISION (USA)
SPECIFICATIONS
length4.875 INCHES NOMINAL IN
materialWOOL
style_designatorCYLINDRICAL
end_connection_typePLAIN FIRST END
filtering_media_designMOLDED
NSN4730-00-949-0624
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: U3921 · 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
•
LENGTH: 4.875 INCHES NOMINAL IN
•
MATERIAL: WOOL
•
FILTERING MEDIA DESIGN: MOLDED
•
STYLE DESIGNATOR: CYLINDRICAL
•
END CONNECTION TYPE: PLAIN FIRST END
TECHNICAL CHARACTERISTICS
LENGTH4.875 INCHES NOMINAL IN
MATERIALWOOL
FILTERING MEDIA DESIGNMOLDED
STYLE DESIGNATORCYLINDRICAL
END CONNECTION TYPEPLAIN FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
46281-02-02-005InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2230B2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
U30B2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
VC25AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
Y143InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
UL321-1 PIECE 25AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U3921?
U3921 is a STRAINER ELEMENT,SEDIMENT.
What parts can replace U3921?
There are 12 known substitutes for U3921: 46281-02-02-005, 2230B2, U30B2 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for U3921?
U3921 is cataloged in the Federal Logistics Information System under NSN 4730-00-949-0624. 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: September 2026