uxcell M4 x 4mm Female Thread Brass Knurled Threaded Insert Embedment Nuts 200PCS auspowers_batchone KEO 53513 Cobalt Steel Single-End

KEO 53513 Cobalt Steel Single-End Countersink

also compatible with Creality CR-10 all-metal hotend

Close the door

and Cross joints

M4*60 total 100pcs in a clear box

uxcell M4 x 4mm Female Thread Brass Knurled Threaded Insert Embedment Nuts 200PCS auspowers_batchone KEO 53513 Cobalt Steel Single-Enduxcell M4 x 4mm Female Thread Brass Knurled Threaded Insert Embedment Nuts 200PCS Made of bass material. featured with heat resistance. used on injection moulding for tightly fixing. No need to counterbore or countersink the Boss hole because insert has guide pilot. Product Features Thread Size: M4 0. 16"; Product Name: Knurled Nut Material: Brass; Weight: 55g Package Content: 200(+ 2%) x Knurled Nuts; Main Color: Brass Tone Pitch: 0. 7mm; Outter