M8 x 25mm Vented Socket Countersunk Screws (DIN 7991) - Thread Locking 18-8 / 304 Stainless Steel: Accu.co.uk: Precision Screws
M5 - 0.8 5mm Din7991 Black 10.9 Class Alloy Steel Hex Socket Countersunk Head Screw Flat Hex Socket Bolts Din 7991 - Screws - AliExpress
Allen Key Head Din7991 M2.5 M3 M4 M5 M6 M8 Stainless Steel 304 Hex Socket Flat Countersunk Head Screw|cap screw|head cap screwsocket head cap screw - AliExpress
M8 316 A4 Stainless Steel Countersunk Flat Head Socket Caps Hex Screws DIN 7991 | eBay
DIN 7991 - Hexagon socket countersunk head cap screws
MonsterBolts - M8 x 10mm Flat Head Socket Cap Screws, DIN 7991, Stainless Steel, 10 Pack: Amazon.com: Industrial & Scientific