UNF
UNF meaning Unified Fine, also a dominant thread in the USA. Often used in the automobile industry because of their tight fine threads. Generally available in steel and stainless steel. Come in higher grades – (S) high tensile and higher grades available.
![UNF Socket Cap Screw](https://cdn.arunfasteners.co.uk/wp-content/uploads/2018/01/UNF-Socket-Cap-Screw-copy-300x175.jpg)
![UNF Socket Set Screw](https://cdn.arunfasteners.co.uk/wp-content/uploads/2018/01/UNF-Socket-Set-Screw-copy-300x258.jpg)
![UNF CSK Slotted Machine Screw](https://cdn.arunfasteners.co.uk/wp-content/uploads/2018/01/UNF-CSK-Slotted-Machine-Screw-copy-300x210.jpg)