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PartsTable / COMPONENT / 21303 FIND 4
21303 FIND 4 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: ALUMINUM ALLOY, surface_treatment: ANODIZE, valve_type_for_which_designed: DIRECTIONAL CONTROL LINEAR, material_document_and_classification: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE, surface_treatment_document_and_classification: MIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-449-1591, 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
21303 FIND 4
NSN: 4810-01-449-1591
FSC: 4810
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
surface_treatmentANODIZE
valve_type_for_which_designedDIRECTIONAL CONTROL LINEAR
material_document_and_classificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE
NSN4810-01-449-1591
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21303 FIND 4 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT: ANODIZE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
•
VALVE TYPE FOR WHICH DESIGNED: DIRECTIONAL CONTROL LINEAR
•
MATERIAL: ALUMINUM ALLOY
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTANODIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
VALVE TYPE FOR WHICH DESIGNEDDIRECTIONAL CONTROL LINEAR
MATERIALALUMINUM ALLOY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
21303Interchangeable
interchangeable cross-reference
interchangeable
900404-8Interchangeable
interchangeable cross-reference
interchangeable
632394-1Interchangeable
interchangeable cross-reference
interchangeable
52943Interchangeable
interchangeable cross-reference
interchangeable
18S2465Interchangeable
interchangeable cross-reference
interchangeable
14979Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21303 FIND 4?
21303 FIND 4 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 21303 FIND 4?
There are 20 known substitutes for 21303 FIND 4: 21303, 900404-8, 632394-1 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21303 FIND 4?
21303 FIND 4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-449-1591. 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: July 2026