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Flat Head Cap Screw Black Steel 5/16-18 * 3-1/2" Grade 8 [Cup Point] [Allen Drive]

Flat Head Cap Screw Black Steel 5/16-18 * 3-1/2" Grade 8 [Cup Point] [Allen Drive]

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Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws. They're angled under the head to sit flush within countersunk holes. Length is measured from the top of the head. The screw has a length of 3-1/2" and a thread of 5/16-18.

Black-oxide alloy steel screws have mild corrosion resistance in dry environments.

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Specifications
Product Number VPF-02035
Thread Size 5/16"-18
Length 3-1/2"
Threading Partially Threaded
Min. Thread Length 1"
Flat Head Profile Standard
Head Diameter 0.656"
Head Height 0.198"
Countersink Angle 82°
Drive Style Hex
Drive Size 3/16"
Material Black-Oxide Alloy Steel
Hardness Rockwell C32
Fastener Strength Grade/Class Grade 8
Tensile Strength 120,000 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, ASTM F835
RoHS Compliant