TE Connectivity · Electronic Components
B451
(FAA/PMA)=RELAY
Part NumberB451
ManufacturerTE Connectivity
AvailabilityAvailable to order — request a quote
Specifications
NSN2940-00-353-4970 (NSN)
Additional NSNs5940-00-197-8707
Federal Item NameAIR CLEANER,INTAKE
MaterialSTEEL
Overall Height4.813 INCHES MINIMUM AND 5.063 INCHES MAXIMUM
Outside Diameter5.438 INCHES NOMINAL
Quantity1
Outlet TypeSLEEVE
Element TypeHOODED
SubmersibilityNONSUBMERSIBLE
Mounting Outside Diameter1.938 INCHES NOMINAL
Element ReplaceabilityNONREPLACEABLE
Filter TypeOIL BATH
Federal Supply Class2940 — Engine Air And Oil Filters, Strainers, And Cleaners, Nonaircraft
Mounting Tongue Width0.438 INCHES
Surface TreatmentTIN MOUNTING FACILITY SINGLE LAYER
Conductor Accommodation TypeSTRAIGHT BARREL SINGLE END
Overall Width0.438 INCHES
Distance From Mounting Hole Center0.328 INCHES
Nondefinitive Spec Std DataWT TYPE AND L-51 SHAPE AND 2-1/2-4 SIZE
Maximum Conductor Size Accommodate14 AWG
Basic Shape StyleCRIMP
Mounting Method StyleSTRAIGHT ONE HOLE
Mounting Hole Diameter0.228 INCHES
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 B451 available?
We can source B451 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 B451 by TE Connectivity obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If B451 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 B451?
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 B451?
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.