Uxcell a16012500ux0470 M3 Female Thread T Slot Hammer Head Drop in Nut Silver Tone Metal (Pack of 50) Product Name: T Slot Nut; Material: Metal Weight: 62g; Package Content: 50(+/-2%) x T Slot Nut Overall Size: 10 x 6 x 4.5mm/0.4" x 0.24" x 0.18"(L*W*H); Main Color: Silver Tone Thread Size: M3 Head Height: 3.5mm/0.14"