M4BN1 170Pcs M4 Brass Cylinder Knurled Nut Threaded Round Insert Embedded Nuts Assortment Set

Specification: Model: M4BN1;  Material: Brass;  Quantity: 170Pcs;  Features: 1. Made of high quality brass, it is of high hardness and good durability.  2. No deformation under great pressure.  3. Resistant to wear, oxidation and corrosion, long service life.  4. Knurled surface makes nuts embed installed object tightly and stably.  5. High precision threads is compatible with corresponding screws.  Package Included: 30PCS - M4 * 4;  30PCS - M4 * 5;  30PCS - M4 * 6;  30PCS - M4 * 8;  30PCS - M4 * 10;  20PCS - M4 * 12.