SIZE - Applicable Hole Dia: 5/16"(8mm); Under Head Size(Male): M6 x 45mm(D*L); Under Head Size(Female): 8 x 18mm(D*L); Screw Head Diameter: 12.8mm Application - Fit for all kinds of DIY, leather crafts, clothing making, or as a fastener to connect two objects. Such as thin photo albums, leather bags, wooden board connections, etc. Installation - Make a hole between 0.5-1mm larger than the diameter of the female rod, put the screw and nut on both sides of the locked object, and select the appropriate tool to lock it. Notice - The thickness of the object which is locked, must be less than the length of the screw rod + nut rod, otherwise, it will not be able to tighten. Advantage - Precision mechanical thread, made of carbon steel material, zinc plated finish, high hardness. Description:
1. Application - Fit for all kinds of DIY, leather crafts, clothing making, or as a fastener to connect two objects. Such as thin photo albums, leather bags, wooden board connections, etc.
2. Installation - Make a hole between 0.5-1mm larger than the diameter of the female rod, put the screw and nut on both sides of the locked object, and select the appropriate tool to lock it.
3. Notice - The thickness of the object which is locked, must be less than the length of the screw rod + nut rod, otherwise, it will not be able to tighten.
4. Advantage - Precision mechanical thread, made of carbon steel material, zinc plated finish, high hardness.

Specification:
Product Name: Screw PostMaterial: Carbon Steel, Zinc Plated
Main Color: Silver Tone
Screw Head Diameter: 12.8mm / 0.5"
Under Head Size(Female): 8 x 18mm / 0.24" x 0.71"(D*L)
Under Head Size(Male): M6 x 45mm / 0.24" x 1.77"(D*L)
Fit Hole Diameter: 8mm / 0.31"
Hex Socket Width: 4mm / 0.16"
Weight: 146g
Package Content: 10 Sets x Screw Post