40 Sets Black M6 Connecting Bolts Cap Nuts Assortment Kit and 2pcs matching drive tool. Mainly functions :combination, connection, fixing, and wear resistance. Installation -Insert the screw into the hole on one end and insert the nuts to cover the screw on the other end. Lastly, use the M4 wrench tighten the bolts nuts. Recommended size -Applicable Hole Size 3.15"(8 mm); Thickness applicable to objects to be locked: minimum 35 mm,maximum 46 mm,. Application - used as a fastener to connected, Fit for all kinds of DIY art, leather crafts, and clothing making. Such as Baby Bed Furniture, thin photo albums, decorative bags, belts, leather bags, sandals, boots, etc. M6 Black Binding Screws Connecting Bolts Cap Nuts Assortment Kit:

Features of connecting bolt nut:
Tighten the two ends of the insert hole through the nut screw to achieve the functions of combination, connection and fixing.
used as a fastener to connected, Fit for all kinds of DIY art, leather crafts, and clothing making. Such as Baby Bed Furniture, thin photo albums, decorative bags, belts, leather bags, sandals, boots, etc.
Very important size You need to know before you buy: applicable hole size 0.315"(8 mm); thickness applicable to objects to be locked:minimum 1.4 inch , maximum 1.8 inch.
Specification:
Material: high hardness and high quality carbon steel
Main Color: Black
Size:
Screws: M6 x 30mm
Fit Hole Diameter:0.315”(8mm)
Fit Range of thickness:1.4 inch-1.8 inch.
Drive tool: M4

Quantity:
40 x Bolts
40 x Barrel nuts
2 x Drive tool
total: 82 Pcs

Note: Small objects and sharp drill bits, please keep away from children