20 Pcs Black Flat Head Knurled Hand-Tight Adjustment Screws M4x6mm.

Product Description

✅Material:   hand-tight adjustment screws made of Nickel -plated carbon steel；

✅Features: screws are used to retain parts in a fixed position,maintain alignment between different parts,or to join different；

✅ Easy to install :Most suitable for applications with rotating movements and where self-lubricating properties of the material are a prerequisit；

✅Used:Used in airplane model, Construction,ship model, car models and DIY craft makingindustry, handicrafts, pipelines, mechanical structural.

Note: allow 1-3mm error