|Drive Style||External Hex|
|System of Measurement||Inch|
|Thread Direction||Right Hand|
|Screw Size Decimal Equivalent||0.4375"|
|Thread Fit||Class 2A|
|Min. Thread Length||1 3/8"|
|Fastener Strength Grade/Class||Grade 5|
|Tensile Strength||120,000 psi|
|Specifications Met||ASME B18.2.1, SAE J429|
|REACH||REACH (EC 1907/2006) (07/16/2019, 201 SVHC) Compliant|
|RoHS||RoHS 3 (2015/863/EU) compliant|
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. Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Screws that meet ASTM A449 or SAE J429 comply with specifications and testing requirements for material quality.