MIL-SPEC · Electronic Components
AN4CH20A
BOLT HH HOLE 1/4-28 X 2.031, CRES
Part NumberAN4CH20A
ManufacturerMIL-SPEC
AvailabilityIn stock — ships fast
Specifications
NSN5306-00-182-1865 (NSN)
Federal Item NameBOLT,MACHINE
MaterialSTEEL COMP 431 OVERALL
Features ProvidedFINISHED HEAD
Thread DirectionRIGHT-HAND
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH
Hole Quantity1
Width Between Flats0.418 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
Fastener Length2.016 INCHES MINIMUM AND 2.062 INCHES MAXIMUM
Nominal Thread Diameter0.250 INCHES
Material Document And ClassificatiMIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Hole TypeDRILLED
Federal Supply Class5306 — Bolts
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 AN4CH20A in stock?
Yes — AN4CH20A is in our stock database. Request a quote for current pricing and lead time.
Is AN4CH20A by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If AN4CH20A 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 AN4CH20A?
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 AN4CH20A?
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.