MIL-SPEC · Electronic Components
12321243
SHAFT SHOULDER
Part Number12321243
ManufacturerMIL-SPEC
AvailabilityIn stock — ships fast
Specifications
NSN3040-01-182-4353 (NSN)
Federal Item NameSHAFT,SHOULDERED
MaterialSTEEL CORROSION RESISTING
Overall Length4.660 INCHES NOMINAL
Special FeaturesCONTAINS TWO 0.270 IN. LG. SLOTS
Second End Diameter0.1900 INCHES NOMINAL
First End Groove Width0.2501 INCHES NOMINAL
Second End Groove Diameter0.1250 INCHES NOMINAL
First End Distance From End To Gro0.080 INCHES NOMINAL
First End Groove Diameter0.2485 INCHES NOMINAL
Step Quantity5
Second End External Thread Length0.320 INCHES NOMINAL
Federal Supply Class3040 — Miscellaneous Power Transmission Equipment
Cross Reference3040-01-182-4353
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 12321243 in stock?
Yes — 12321243 is in our stock database. Request a quote for current pricing and lead time.
Is 12321243 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 12321243 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 12321243?
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 12321243?
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.