18-8 Stainless Steel Hex Drive Flat Head Screw

5/16″-18 Thread Size, 1″ Long

Contact Us

Product Description

These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

Passivated stainless steel screws have added protection against oxidation and corrosion.


Thread Size 5/16“-18
Length 1″
Threading Fully Threaded
Flat Head Profile Standard
Head Diameter 0.656″
Head Height 0.198″
Countersink Angle 82°
Drive Style Hex
Drive Size 3/16
Material 18-8 Stainless Steel
Finish Passivated
Hardness Rockwell B55
Tensile Strength 70,000 psi
Screw Size Decimal Equivalent 0.313″
Thread Type UNC
Thread Spacing Coarse
Thread Fit Class 3A
Thread Direction Right Hand
Head Type Flat
System of Measurement Inch
Specifications Met ASME B18.3
REACH REACH (EC 1907/2006) (01/16/2020, 205 SVHC) Compliant
RoHS RoHS 3 (2015/863/EU) Compliant