Lockheed Martin · Electronic Components
3040656-004-3
Shielding Gasket, Electronic
Part Number3040656-004-3
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-00-166-2678 (NSN)
Federal Item NameSHIELDING GASKET,ELECTRONIC
Federal Supply Class5999 — Miscellaneous Electrical Components
MaterialRUBBER SILICONE CLASS Q EMI/RFI CONDUCTOR
Style DesignatorNON-CIRCULAR
Overall Width4.610 INCHES MINIMUM AND 4.650 INCHES MAXIMUM
Outside Corner Radius0.250 INCHES NOMINAL
Cross Sectional Thickness0.020 INCHES NOMINAL
Aperture Width3.610 INCHES MINIMUM AND 3.650 INCHES MAXIMUM
Outside Edge To Bolt Hole Center D0.205 INCHES NOMINAL
Hole Diameter0.140 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
Bolt Hole Quantity8
Inside Corner Radius0.250 INCHES NOMINAL
Aperture Length4.540 INCHES MINIMUM AND 4.580 INCHES MAXIMUM
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 3040656-004-3 available?
We can source 3040656-004-3 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 3040656-004-3 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3040656-004-3 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 3040656-004-3?
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 3040656-004-3?
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.