100 Pcs M5 T Fastener Sliding Nut & 50 pcs Head Hex Socket Cap Screw Bolt 10.9 Tensile Strength . Hex Socket Button Head . Fastener Type: Machine Screw . Drive Type: Hex Socket; Head Style: Button Head Post-Assembly T Nuts: Used for: Insert into aluminium profile and connected together with T screw or others. Type: T Hammer nut Surface Treated: nickel plated Color: Silver Material: Carbon steel Specifications: M5-20 Width: 6mm Thread diameter: 4mm Button Head Screws: Product Name: Button Head Screws Color: black Material: 10.9 Alloy Steel; Thread Size: M5x8mm /0.2 inch x 0.3 inch (D*L); Thread Pitch: 0.8mm; Total Length: 10mm/0.4 inch Hex Socket Width: 3mm/0.12 inch ; Head Size: 9x2mm/0.35 inch x 0.08 inch (D*H) Package Content: 100 x Post-Assembly T Nuts 50 x Button Head Screws Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.