MIL-SPEC · Electronic Components
MS21044N5
LOCK NUT 5/16-24
Part NumberMS21044N5
ManufacturerMIL-SPEC
AvailabilityCheck availability — request a quote
Specifications
NSN5310-00-088-0553 (NSN)
Federal Item NameNUT,SELF-LOCKING,HEXAGON
MaterialSTEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1018 OR
Nominal Thread Size0.312 INCHES
Bearing Surface TypeCHAMFERED OR WASHER FACED
Thread SeriesUNIFIED NATIONAL JOINT FINE (UNJF)
Nut StyleHEXAGON
Width Across Flats0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
Bearing Surface Finish125.0 MICROINCHES
Surface TreatmentCADMIUM AND CHROMATE NUT
LubricationSOLUBLE LUBRICANT
Temp Rating250.0 FAHRENHEIT 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 MS21044N5 available?
MS21044N5 is a part RH Electronics stocks and sources — availability changes daily, so request a quote and we'll confirm current stock, pricing and lead time, usually within a few hours.
Is MS21044N5 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MS21044N5 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 MS21044N5?
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 MS21044N5?
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.