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Technical Data Sheet
PartsTable / COMPONENT / 001021
001021 ✓ Verified by PartsTable
Legrand · 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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include end_item_identification: 4 STAGE AIR COOLED COMPRESSOR, part_name_assigned_by_controlling_agency: PLUG. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-526-0304, 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
001021
NSN: 4730-00-526-0304
FSC: 4730
CAGE: 72233 — COUNTRY CATERERS BBQ INC. DBA COUNTRY CATERER'S USE CAGE CODE 0MM69 FOR CATALOGING (USA)
SPECIFICATIONS
end_item_identification4 STAGE AIR COOLED COMPRESSOR
part_name_assigned_by_controlling_agencyPLUG
NSN4730-00-526-0304
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 001021 · Legrand ⚠ 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
3-0761Interchangeable
interchangeable cross-reference
interchangeable
R523Interchangeable
interchangeable cross-reference
interchangeable
10576Interchangeable
interchangeable cross-reference
interchangeable
10781Interchangeable
interchangeable cross-reference
interchangeable
SL5265P/N10576Interchangeable
interchangeable cross-reference
interchangeable
SL5265PC36Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 001021?
001021 is a FILTER,RADIO FREQUENCY INTERFERE manufactured by Legrand.
What parts can replace 001021?
There are 20 known substitutes for 001021: 3-0761, R523, 10576 and 17 more. Substitute compatibility should be verified for your specific system.
Is 001021 still available?
001021 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026