Professional Machine Screws & Sems Screws for Precision Applications

BOSS Precision Works specializes in manufacturing high-quality machine screws and sems screws in multiple materials, head types, and drive configurations for global industrial and electronics manufacturers.

Machine Screws

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Machine Screws

Machine screws are often used for precision electronic parts, and sheet metal applications as well as plastic applications. Generally a smaller fastener, usually has a Phillips or slotted recess.

Specification

  • Material: carbon steel, stainless steel, brass, aluminum
  • Diameter:
    • Machine Screws: #0 ~ #17 or M2 ~ M6.3
    • Sems Screws: #2 ~ #5/16 or M2 ~ M8
  • Length:
    • Machine Screws: 1/4~8" or 6mm ~ 200mm
    • Sems Screws: 1/8" ~ 3" or 4mm ~ 80mm
  • Standard: IFI, DIN, JIS, BS

Head Type

  • pan head, round head, oval head, hex washer head, hex head, flat (C.S.K) head, cheez head, truss head, round washer head, and etc.

Drive Type

  • phillips, star, pozi, square, slot, phillips/slot, phillips/square, hex socket (Allen Key), and etc.

Thread Type

  • machine screw, trilobular thread screw, and etc.

Washer Type

  • helical split washer, external tooth washer, internal tooth washer, flat washer, square cone washer, and etc.

Best Sale

How can you source precision machine screws that meet strict assembly specifications while reducing procurement complexity?

BOSS provides electronics manufacturers with comprehensive machine screw solutions featuring 10+ head types (pan, round, hex, flat countersink) and 8+ drive types (phillips, star, pozi, square, hex socket) in carbon steel and stainless steel. Our ISO 9001 certified manufacturing ensures consistent precision for your critical electronic assemblies. Contact BOSS today to discuss your specific requirements and access our full customization capabilities for your next production run.

BOSS also manufactures sems screws (machine screws with integral washers) in diameter ranges #2 to #5/16 (M2 to M8) and lengths from 1/8" to 3" (4mm to 80mm), featuring helical split washers, external tooth washers, internal tooth washers, and flat washers. Our OEM/ODM capabilities enable custom configurations meeting IFI, DIN, JIS, and BS standards, with eco-friendly coating options available for environmentally conscious manufacturers. Partner with BOSS for precision fasteners that combine superior quality, cost efficiency, and reliable delivery to support your global production needs.

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