MC Master · Electronic Components
90591A121
NUT,HEX,M3,STEEL,ZINC PLATED
Part Number90591A121
ManufacturerMC Master
AvailabilityIn stock — ships fast
Specifications
NSN5310-01-615-8654 (NSN)
Federal Item NameNUT,PLAIN,HEXAGON
MaterialSTEEL OVERALL
Nominal Thread Size3.0 MILLIMETERS
Thread Pitch In Millimeters0.50
Thread Class6H
Nut Height2.4 MILLIMETERS NOMINAL
Nut StyleHEXAGON
Bearing Surface TypeFLAT
Thread SeriesM
Thread DirectionRIGHT-HAND
Width Across Flats5.5 MILLIMETERS NOMINAL
Federal Supply Class5310 — Nuts And Washers
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 90591A121 in stock?
Yes — 90591A121 is in our stock database. Request a quote for current pricing and lead time.
Is 90591A121 by MC Master obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 90591A121 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 90591A121?
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 90591A121?
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.