MIL-SPEC · Electronic Components
MS35307-320
S/S Bolt 1/4-20 X 3-1/2 Hex Hd
Part NumberMS35307-320
ManufacturerMIL-SPEC
AvailabilityIn stock — ships fast
Specifications
NSN5305-00-153-8804 (NSN)
Federal Item NameSCREW,CAP,HEXAGON HEAD
MaterialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303F OR STEEL COMP 385 OR STEEL COMP 303SE OR STE
Minimum Tensile Strength80000 POUNDS PER SQUARE INCH
Thread Class2A
Width Between Flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
Hardness Rating80.0 ROCKWELL B MINIMUM OVERALL
Surface Finish63.0 MICROINCHES THREADS
Minimum Yield Strength30000 POUNDS PER SQUARE INCH
Surface Treatment Document And ClaQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nominal Thread Diameter0.250 INCHES
Nondefinitive Spec Std Data2 TYPE AND 10P STYLE
Federal Supply Class5305 — Screws
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 MS35307-320 in stock?
Yes — MS35307-320 is in our stock database. Request a quote for current pricing and lead time.
Is MS35307-320 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MS35307-320 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 MS35307-320?
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 MS35307-320?
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.