General Dynamics Defense Systems · Electronic Components
20520318-1
Shielding Gasket, Electronic
Part Number20520318-1
ManufacturerGeneral Dynamics Defense Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-413-7924 (NSN)
Federal Item NameSHIELDING GASKET,ELECTRONIC
Federal Supply Class5999 — Miscellaneous Electrical Components
Inside Corner Radius0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
MaterialPLASTIC ACRYLIC ENVIRONMENTAL SEAL
Style DesignatorNON-CIRCULAR
Aperture Length5.710 INCHES NOMINAL
Overall Length6.480 INCHES MINIMUM AND 6.520 INCHES MAXIMUM
Overall Width2.610 INCHES MINIMUM AND 2.650 INCHES MAXIMUM
Cross Sectional Height0.175 INCHES MINIMUM AND 0.215 INCHES MAXIMUM
Outside Corner Radius0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
Aperture Width1.785 INCHES NOMINAL
Environmental Protection MaterialTHROUGHOUT RF SHIELDING GASKET
Vendor Part Numbers71-01504
ESD/EMICode A — ESD/EMI sensitive item
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 20520318-1 available?
We can source 20520318-1 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 20520318-1 by General Dynamics Defense Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 20520318-1 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 20520318-1?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 20520318-1?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.