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SW20 — FILTER,RADIO FREQUENCY INTERFERE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

SW20: FILTER,RADIO FREQUENCY INTERFERE.

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include body_width: 3.000 INCHES NOMINAL IN, body_height: 2.750 INCHES NOMINAL IN, body_length: 7.100 INCHES NOMINAL IN, body_material: METAL, inclosure_type: ENCASED, overall_length: 8.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-533-3476, 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
MRO→ MRO_GENERAL→ SW20
NSN: 4720-00-533-3476
NIINs: 005333476, 012389221, 013425778
FSC: 4720 — Hose and Flexible Tubing
CAGE: 63906 — CONTITECH USA, INC. (USA)
SPECIFICATIONS
body_width3.000 INCHES NOMINAL IN
body_height2.750 INCHES NOMINAL IN
body_length7.100 INCHES NOMINAL IN
body_materialMETAL
inclosure_typeENCASED
overall_length8.250 INCHES NOMINAL IN
special_featuresTWO FILTERED FUNCTIONS
style_designatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
end_item_identificationXRAY APPARATUS
load_impedance_per_function50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION
unthreaded_mounting_hole_diameter0.190 INCHES NOMINAL IN
mounting_facility_type_and_quantity4 UNTHREADED HOLE(S) LOCATION NOT OTHERWISE SPECIFIED
NSN4720-00-533-3476
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: SW20 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 5
20SWReference document
Same NSN cross-reference
Reference document — Secondary reference
881-20Reference document
Same NSN cross-reference
Reference document — Secondary reference
H03920Reference document
Same NSN cross-reference
Reference document — Secondary reference
56985Reference document
Same NSN cross-reference
Reference document — Secondary reference
HI-408-3049 ITEReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SW20?
SW20 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace SW20?
There are 5 known substitutes for SW20: 20SW, 881-20, H03920 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SW20?
SW20 is cataloged in the U.S. Government catalog under NSN 4720-00-533-3476. 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.