8pcs M4x8mm 10.9 Grade Flat Countersunk Head Hex Socket Left Hand Thread Bolt
- Made of 40Cr Steel material,black oxide finish,hex socket flat head,left hand reverse thread design.
- Fixing component, industrial and construction fasteners.
- To tighten a reverse threaded screw, you turn it counter clockwise.To loosen a reverse threaded screw, you turn it clockwise.
- Used widely in home, office and factory appliance, communication equipments, ship assembly and other machinery industry.
Total Length: 8mm/0.31''Thread Style: Fully Thread, Weight: 8g, Drive Type: Hex Socket HeadHead Style: Countersunk/Flat Head, Thread Size: M4,
- Material: 40Cr Steel, Head Size: 7.7mm/0.3"(D), Hex Socket Width: 2.5mm/0.1"
- Grade: 10.9, Pitch: 0.7mm, Coating: Black Oxide Plated
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