Unknown 3330 Button Head Socket Cap Screws 5/16"-18 x 11/16" Lot of 25

Flanged BHSCS (Button Head Socket Cap Screws) set designed for fastening applications requiring a low-profile rounded head with integrated flange, providing improved load distribution and secure fastening without the need for separate washers. Manufacturer: Not specified (generic industrial fasteners) Product type: Button Head Socket Cap Screw (BHSCS) with flange Designation: Flanged BHSCS Standard size: 5/16"-18 x 11/16" Thread type: UNC (Unified National Coarse) Thread size: 5/16"-18 Length: 11/16 inch (under head) Head type: Button head with integrated flange Drive type: Internal hex (Allen) Material: Alloy steel (typical for BHSCS fasteners) Finish: Black oxide or similar corrosion-resistant coating Strength grade: Approx. Grade 8 / Class 10.9 equivalent (typical for this type) Flange feature: Built-in washer face for wider bearing surface Quantity: Lot of 25 pieces Package marking: “5/16-18 x 11/16 FLANGED BHSCS”, quantity 25 Application: Machinery assembly, automotive, industrial equipment, structural fastening Mounting tool: Hex/Allen key Corrosion resistance: Moderate (depending on coating) Temperature resistance: Suitable for standard industrial environments Standards: Typically conforms to ANSI/ASME socket screw standards (exact standard not indicated) Country of manufacture: Not specified Weight: Approx. 8–15 g per screw Installation: Reusable, removable threaded fastener Additional features: Low-profile head, clean appearance, reduced snagging, improved clamping area due to flange Please review pictures carefully and let us know if you have any questions!