Metric, Hex Cap Screw, DIN 931 Partially Threaded, Class 12.9, Plain This product standard contains the required dimensional, mechanical, performance, and chemical characteristics of the products shown in this purchase order (as applicable to the product). Unless specified below, current revisions of national or international standards shall be applicable as of the date of Fastenalâs purchase order and must be adhered to in their entirety. If the order received does not meet these requirements, corrective action may be issued which could jeopardize your status as an approved supplier to Fastenal Specification Requirements: ï· Dimensions: DIN 931; For dimensions not shown above, refer to DIN 931 ï· Threads: 6g per ISO 724; ISO 965-1 ï· Material & Mechanical Properties: ISO 898-1; Class 12.9 ï· Head Marking: Manufacturerâs ID and 12.9 ï· Finish: Light Protective Oil ï· Material Test Reports: The MTR must have documented lot traceability, dimensional results, full chemical test results and full mechanical test results to the specification(s) above. In addition, the MTR shall be in full compliance with Fastenalâs MTR Requirements.