MIL-SPEC · Electronic Components
MS16228-4C
1/4-20, HEX SELF-LOCKING NUT
Part NumberMS16228-4C
ManufacturerMIL-SPEC
AvailabilityIn stock — ships fast
Specifications
NSN5310-00-245-8825 (NSN)
Additional NSNs5310-00-727-5223, 5310-01-709-2027, 5310-01-729-2626
Federal Item NameNUT,SELF-LOCKING,HEXAGON
MaterialSTEEL OVERALL EXCEPT INSERT; PLASTIC POLYHEXAMETHYLENE AMIDE LOCKING INSERT
Nominal Thread Size0.250 INCHES
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Surface TreatmentPASSIVATE NUT
Bearing Surface TypeCHAMFERED
Thread Quantity Per Inch20
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Countersink Angle88.0 DEGREES NOMINAL NUT
Thread DirectionRIGHT-HAND
Nut StyleHEXAGON
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 MS16228-4C in stock?
Yes — MS16228-4C is in our stock database. Request a quote for current pricing and lead time.
Is MS16228-4C by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MS16228-4C 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 MS16228-4C?
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 MS16228-4C?
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.