Countersunk screw FT D.7991 M8x20 A4/6pc
Note: The images are an indicative representation of the product. Technical details can be found in the sections below.
Product information
| pgb article number | SB1991080020 |
| EAN code | 5410439051965 |
| Functional name | Hexagon socket countersunk head cap screw |
| Packing type | Blister |
| Packaging quantity | 6 |
| Brand name | Pgb-fasteners |
| Material | Stainless steel A4 |
| Surface | Plain |
| Thread shape | Full thread |
| DIY packaging colour | Grey |
| l | Length | 20.0 |
| b | Thread length | 20.0 |
| M | Metric thread | M8 |
| Recess/key | HEX 5 | |
| dk | Head diameter | 16 |
| Angle | 90.0 | |
| k | Head height | 4,4 |
| Installation environment | C4 - Outdoor use, marine environment and heavy industry | |
| DIN 7991 has been replaced by ISO 10642. They have limited interchangeability. Some head heights and head diameters have been changed. Nominal diameters M18-M22-M24 have been omitted. Stainless steel was removed and the hardness class for steel 10.9 and 12.9 added. The notation "08.8" and "010.9" indicates that these screws may only be subjected to limited loads according to DIN EN ISO 898-1 due to their head geometry. |
| Cancelled 11/1997 |