| Feature | Details |
|---|---|
| Material | Hardened Steel, Stainless Steel, or Brass |
| Thread Type | Metric (ISO) or Unified (UNC/UNF) |
| Head Types | Pan, Flat, Round, Socket, Hex |
| Sizes Available | M2 - M12 (Metric), #4 - 1/2" (Imperial), 6mm - 100mm length |
| Drive Types | Phillips, Slotted, Hex, Torx |
| Applications | Machinery, Electronics, Automotive, Aerospace |
This slotted countersunk machine screw is a standard general-purpose fastener for metal and plastic assembly.
It is manufactured from Grade 4.8 carbon steel with blue white zinc plating to resist rust in dry indoor working environments. The flat countersunk design allows the entire head to recess beneath part surfaces, eliminating protruding edges for neat and safe finished assembly.
The single straight slot drive is compatible with common flat screwdrivers, convenient for low-volume manual installation without special power bits. Precision full machine thread features consistent pitch, ensuring tight, stable locking with matched tapped holes and standard nuts.
Unlike wood screws with self-tapping threads, this machine screw relies on pre-tapped threaded holes and is intended for rigid metal, plastic and thin sheet metal joining. All finished screws pass thread precision and torsion testing before shipment to meet general mechanical hardware standards. Buyers can customize length and surface finish according to assembly project requirements.
