200x Qualfast 1/4 BSW X 2.1/2 Skt Countersunk Head Screw (GR-10.9)
High Grade Alloy Steel to BS EN ISO 898/1 Grade 10.9. Suitable for all high tensile applications. Maximum operating temperature (unplated): 300C. For applications that require a flush finished surface. Precisely controlled countersink angle allows maximum flushness and sidewall contact.
Dimensions to BS 2470 - DIN 7991