100Pcs M4 x 5mm Female Thread Brass Knurled Threaded Insert Embedment Nuts

200pcs M4 x 4mm Female Thread Brass Knurled Threaded Insert Embedment Nuts

M2 x 0.4mm Female Brass Knurled Threaded Insert Embedment Nuts 100PCS

25pcs Knurled Threaded Insert 1/4" Female Thread Brass Embedment Nuts

200-1000Pc M3 Thread Knurled Brass Threaded Heat Resistant Insert Embedment Nuts

M3 x 3mm Female Thread Brass Knurled Threaded Insert Embedment Nuts 100PCS W4P9

M4 x 5mm(L) x 5mm(OD) Brass Knurled Threaded Insert Embedment Nuts, 100 Pcs

M3x4mmx4mm Female Thread Brass Knurled Threaded Insert Embedment Nut 50Pcs