RS PRO Plain Steel Hex Socket Cap Screw, Hex Socket, M4 x 40 mm

From RS Pro, a range of socket screws incorporating a narrow head, suitable for difficult and hard to reach areas. Machine repair and maintenance would be the most beneficial applications for these types of screws, especially if the sockets are situated between small or cramped crevices. Made with a high tensile steel, they are a perfect addition for environments where corrosion won't be an issue. All models are highly reliable and excellent quality.