18-8 Stainless Steel Hex Head Screw

5/16″-24 Thread Size, 1″ Long

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Product Description

Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.

Match the thread spacing of mating components. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.

Screws that meet ASME or ISO (formerly DIN) specifications comply with these dimensional standards.


Head Type Hex
Drive Style External Hex
System of Measurement Inch
Thread Direction Right Hand
Thread Size 5/16″-24
Screw Size Decimal Equivalent 0.3125″
Thread Type UNF
Thread Fit Class 2A
Length 1″
Threading Fully Threaded
Thread Spacing Fine






Material 18-8 Stainless Steel
Tensile Strength 70,000 psi
Hardness Rockwell B70
Specifications Met ASME B18.2.1
REACH REACH (EC 1907/2006) (01/16/2020, 205 SVHC) Compliant
RoHS RoHS 3 (2015/863/EU) Compliant