• Special Screws
  • Screws with Special Surface Treatment


Hex Socket Head Cap Screws - SUS316L / Surface hardening treatment

  • Seizing & Sticking Prevention
  • Heat-resistance

Dimension Drawing

SNSL-PNHex Socket Head Cap Screws - SUS316L / Surface hardening treatment寸法図

Unit : mm

Part Number M (Coarse)
Nominal of Thread
Pitch L D1 L1 B Mass
SNSL-M4-16-PN M4 0.7 16 7 4 3 2.3 11.92 CAD Cart

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Related Services


Main body SUS316L
Surface hardening treatment
Strength Class A4-70


Seizing & Sticking Prevention
FPD production devices / semiconductor production devices /
food machinery / general industry machinery


  • Hardening the screw surface prevents screw seizing / sticking.
  • Unlike platings or coatings, there is nothing adhering to the surface, eliminating concerns about contamination due to stripping during tightening.
  • Suitable for preventing seizing and sticking in environments where lubricant cannot be used.

Precautions for Use

May have lower corrosion resistance than general SUS316L.
We recommend performing a test under the same usage conditions as in actual usage in advance.

Product List

Click here to see SNSL-M4-PN

Click here to see SNSL-PN