Pack of 85 machine screws engineered for small to medium precision fastening tasks. Thread size 440, length 5/8 inch, Phillips drive, 100 degree flat head, steel construction. Lot of 85, item 1366, model WnyNEH05688. Key benefits Secure, lowprofile fastening: 100 degree flat head seats flush in countersunk holes to reduce snagging and produce a clean finished surface. Common, easytouse drive: Phillips drive works with standard screwdrivers and driver bits for fast installation and removal. Reliable material: steel construction provides the strength needed for machinescrew connections in metal and hardplastic assemblies. Ready supply: pack of 85 ensures you have onhand fasteners for multiple projects and repairs, reducing downtime and repeat ordering. Important attributes Thread size: 440 (UNC) Length: 5/8 inch Head type: flat head, 100 degree countersink Drive type: Phillips Material: steel Quantity: 85 pieces Identifier: item 1366, model WnyNEH05688 Typical applications Electronics and enclosures: secure circuit boards to standoffs or fasten panels where a flush head is required. Equipment and appliance : stripped or lost fasteners in small appliances, control panels, and metal brackets. Hobby and precision assemblies: assemble radio control models, instrument housings, and mechanical prototypes that use UNC 440 threads. Practical notes for use For a flush finish, prepare a matching 100 degree countersunk hole or use a 100 degree countersink tool before insertion. Designed for use with tapped holes, nuts, or threaded inserts specified for 440 threads. Install with a standard Phillips screwdriver or compatible driver bit to avoid camout and to maintain head condition. What makes this pack useful Consistent specifications across the pack simplify parts selection and inventory for workshops, maintenance kits, and hobbyists. The combination of common thread size and flat countersinking head makes these screws versatile for a wide range of small fastener needs. Contents are and packaged for storage and ready use.