100 pieces total

3/8-24 X 7/8” Fine Thread Grade 5 Hex Cap Screw Bolt UNF 

9/16" Hex Head 

See photo for detailed print.

Head TypeHex
Drive StyleExternal Hex
System of MeasurementInch
Thread DirectionRight Hand
Thread Size3/8"-24
Screw Size Decimal Equivalent0.375"
Thread TypeUNF
Thread FitClass 2A
Length7/8"
ThreadingFully Threaded
Thread SpacingFine
Head
Width9/16"
Height15/64"
Fastener Strength Grade/ClassGrade 5
MaterialSteel
FinishZinc Plated
Tensile Strength120,000 psi
HardnessRockwell C25
Specifications MetASME B18.2.1, SAE J429
RoHSRoHS 3 (2015/863/EU) Compliant
REACHREACH (EC 1907/2006) (06/25/2020, 209 SVHC) Compliant
DFARSSpecialty Metals COTS-Exempt

USMCA QualifyingNo
Schedule B731815.9000
ECCNEAR99

Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. 

Dimensions meet ASME B18.2.1 specifications. Grade 5 steel hex head screws are marked with three radial lines. Length is measured from under the head.

Zinc-plated steel screws resist corrosion in wet environments.  Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.

Screws that meet ASTM A449 or SAE J429 comply with specifications and testing requirements for material quality.