Aero-Mach Tco Manufacturing Inc. · Electronic Components
B-4
Holder, Electrostatic Discharger
Part NumberB-4
ManufacturerAero-Mach Tco Manufacturing Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-331-3199 (NSN)
Federal Item NameHOLDER,ELECTROSTATIC DISCHARGER
Federal Supply Class5920 — Fuses and Lightning Arresters
Surface Treatment Document And ClaMIL-C-5541,TYPE 1,GRADE B,CLASS 1.2 MIL SPEC SINGLE TREATMENT RESPONSE
Style DesignatorRECTANGULAR PRISM
Surface TreatmentCHROMATE
Distance Between Mounting Facility0.125 INCHES NOMINAL ALL MOUNTING FACILITIES ALL CENTER GROUPINGS
Mounting Facility Type And Quantit2 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES
Unthreaded Mounting Hole Diameter0.138 INCHES NOMINAL ALL MOUNTING FACILITIES
Overall Length2.375 INCHES NOMINAL
Overall Width0.374 INCHES NOMINAL
Overall Height0.312 INCHES NOMINAL
MaterialALUMINUM
Vendor Part NumbersHS5689-3
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 B-4 available?
We can source B-4 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 B-4 by Aero-Mach Tco Manufacturing Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If B-4 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 B-4?
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 B-4?
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.