Material, Surface Treatment and Hanging Holes


[Machined Plate Notice1]

Unable to select resin products for new quotation. However, we have resumed accepting orders for previously issued part numbers on November 1.


[Machined Plate Notice2]

The standard shipping days have been extended by 3 days for some steel, stainless steel, and aluminum products. However, the restriction will be lifted and we will resume taking orders on the normal shipping days from Nov. 15.
  • The following materials and surface treatments are possible.
  • *Depending on shape and size, hanging holes may be necessary for surface treatment. Refer to the Design Guidelines for information on hanging holes.
MaterialSurface TreatmentHanging Holes
  • 1018 Carbon Steel
  • 1018 Carbon Steel (polished)
  • 1018 Carbon Steel
  • (annealed material)
  • 1045 Carbon Steel (polished)
  • 1049 Carbon Steel
  • 1049 Carbon Steel or Equivalent (tempered material)
No treatment
Black oxide
Electroless nickel plating
Hard Chrome Plating(Flash Plating)Required
Trivalent Chromate (Clear)Required
Trivalent chromate (black)Required
Pre-Hardened Steel1045 Carbon SteelNo treatment
  • 2017 Aluminum Alloy
  • 5052 Aluminum Alloy
  • 6061 Aluminum Alloy
  • 7075 Aluminum Alloy
No treatment
Clear AnodizeRequired*
Black AnodizeRequired*
Black Anodize (matte)Required*
Stainless Steel
  • 303 Stainless Steel
  • 304 Stainless Steel
  • 316 Stainless Steel
  • 430 Stainless Steel
No treatment
ResinPolyacetal (standard, white)No treatment
Polyacetal (standard, black)
MC Nylon (standard, blue)
MC Nylon (standard, ivory)
  • MC Nylon
  • (weather resistance, black ash)
Bakelite (paper, natural color)
Bakelite (paper, black)
Bakelite (cloth, natural)
PTFE (Fluorine) (standard, white)
UHPE (conductivity, black)
ABS (standard, natural color)
PEEK (standard, gray-brown)
  • *Steel between materials 1045 Carbon Steel and 1055 Carbon Steel may be used as an equivalent to 1049 Carbon Steel
  • *1018 Carbon Steel (polished) and 1045 Carbon Steel (polished) are not compatible with trivalent chromate.
  • *1018 Carbon Steel (annealed material) is not compatible with trivalent chromate (black) or hard chrome plating.
  • *The film thickness of hard chrome plating (flash plating) is less than 5μ. The hardness (Vickers) is about Hv750~, and it is difficult get the plating on holes and pockets.
  • *1049 Carbon Steel or Equivalent (tempered material) has a hardness of 20 to 27 HRC. Hardness cannot be specified.
  • *Pre-hardened steel between 37 and 43 HRC may be used as an equivalent to NAK55.
  • *Thin plate standards (thickness 3㎜≤Z<5㎜)are not applicable for surface treatment.
  • *Not required for anodized aluminum if the displayed agreement is agreed to.
  • (However, a wire mark may be left)