• Special Screws
  • Tamper Resistant Screws


Button Head Cap Screws with Five-Lobe Holes (with Pin)

Dimension Drawing

SRGSButton Head Cap Screws with Five-Lobe Holes (with Pin)寸法図



M (Coarse)
Nominal of Thread

Unit : mm

Part Number M (Coarse)
Nominal of Thread
Pitch L D1 L1 Bit Part No. Screwdriver
Part No.
Qty per pack Mass
CAD Standard
SRGS-M8-20 M8 1.25 20 14.0 4.4 SRGB-8 SRD-6.35 5 9.4 15.97 CAD Cart

When purchasing less volume than one full bag, a separate handling fee is charged. For details, see the Sold Separately Service.

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Nabeya Bi-tech Kaisha
Customer Service

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Related Services


Main Body Equivalent to SUS304
Strength Class Equivalent to A2-50


Machinery / Tools / Equipment / Devices disassembly prevention/tampering prevention / Theft prevention for outdoor facilities /
Security measures / Safety measures


  • Button head cap screws with a pin at the center of the five slots, inspired by plum blossoms. Also suitable for decorative uses.
  • This prevents mounting and removing with regular tools.
  • Install and remove with SRGB Dedicated Bits and SRD Dedicated Magnetic Screwdriver together.

Customer Service

  • Usage Method
  • Technical Question
  • Customization Products

NBK America LLC

8:00 to 17:00 on weekdays, Eastern Standard Time