FandWay M4 Hex Bolts,Button Head Machine Screws ISO 7380 Allen Screws,M4x8/12/16/20/30mm Black Bolts Set 10.9 Grade Alloy Steel Fully Threaded With 1 Allen Key (25-Pieces/each).

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  • Type Metric system M4 Hex Socket Button Machine Screw A fully-threaded bolt).In wet outdoor environments it is recommended to use 304 stainless steel or galvanised materials.
  • Material Made from high-quality 10.9-grade alloy steel, it is becoming hard and stronger after heat treatment and with the good features of anti-oxidation, high-temperature resistance, and anti-corrosion.
  • Portable & Storage All of the screws will be packed in a sturdy convenient case.
  • Wide Use M4 Screw assortment Kit Serves a wide range of use for professionals, amateurs, landlords, repairmen, and other DIY.

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