8.8級 穴付きヘックスヘッドボルト GB32.1 ドクロメットシールボルト 針刺し M6M8M20

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May 21, 2025
Video Description:
Discover the high-strength GB32.1 hex head bolts with wire holes, available in grades 8.8 and 10.9. Perfect for bolt locking applications, these carbon steel bolts come in sizes M6 to M20 and various finishes like black oxide, zinc plated, HDG, and Dacromet.