Din6921 Bolt Carbon Steel Black Oxide Grade 8.8 10.9 12.9
Productio parametri
| d * filo speciem | M12 | M16 | M20 | (M22) | M24 | (M27) | M30 | M36 | |
| P | picis | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 |
| b | L≤100mm | 25 | 31 | 36 | 38 | 41 | 44 | 49 | 56 |
| L＞100mm | 32 | 38 | 43 | 45 | 48 | 51 | 56 | 63 | |
| c* | Max | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Min | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
| d*a | Max | 14.7 | 18.7 | 23.24 | 25.24 | 27.64 | 31.24 | 34.24 | 41 |
| d*s | Max | 12.7 | 16.7 | 20.84 | 22.84 | 24.84 | 27.84 | 30.84 | 37 |
| Min | 11.3 | 15.3 | 19.16 | 21.16 | 23.16 | 26.16 | 29.16 | 35 | |
| d*In | Min | 19.2 | 24.9 | 31.4 | 33.3 | 38 | 42.8 | 46.5 | 55.9 |
| et | Min | 22.78 | 29.56 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 66.44 |
| k | nominale | 7.5 | 10 | 12.5 | 14 | 15 | 17 | 18.7 | 22.5 |
| Max | 7.95 | 10.75 | 13.4 | 14.9 | 15.9 | 17.9 | 19.75 | 23.55 | |
| Min | 7.05 | 9.25 | 11.6 | 13.1 | 14.1 | 16.1 | 17.65 | 21.45 | |
| k1 | Min | 4.9 | 6.5 | 8.1 | 9.2 | 9.9 | 11.3 | 12.4 | 15 |
| r* | Min | 0.6 | 0.6 | 0.8 | 0.8 | 1 | 1.2 | 1.2 | 1.5 |
| s | Max | 21 | 27 | 34 | 36 | 41 | 46 | 50 | 60 |
| Min | 20.16 | 26.16 | 33 | 35 | 40 | 45 | 49 | 58.8 | |
| Post b | - | - | - | - | - | - | - | - | |
Productio descriptio
Ferri sistens fulmina sunt altae roboris fulmina et etiam genus vexillum componentium. Bonum ligamen effectus, in ferro structuris et machinatione adhibita ad augendae ligaminis effectum. In structuris chalybis generalibus, structuris chalybeis requisitis fulmina sunt gradus 8.8 vel supra, sicut gradus 10.9 et gradus 12.9, quae omnia sunt firmissima fulmina structurae chalybeae.
Ferri sistens fulmina maxime adhibentur in fabrica ferro machinali ad nexus punctorum sistens laminarum chalybearum connectendi.
Ferri structuris fulmina in torsionem dividuntur fulmina alta fortitudo tondendas et magnas sexangulas altae vires fulmina. Magnae sexangulae fortitudinis altae fulmina ad summum roboris gradum ordinariae cochleae pertinent, cum torsio tondendi altitudinis fortitudinis fulmina sunt melioris generis amplitudines hexagonales et altae fortitudinis fulmina ad meliorem constructionem.
Rebus egens operam in constructione
Constructio ferrei structurae fulmen primum obstringere debet et deinde obstringere, primum stricturae chalybeae compages fulmen uti indiget ad ictum genus clavis electricum vel torques electricis clavis aptabilibus, et ultima strictura chalybea compages fulmen strictam petitionem habet, torques tondendi genus clavis electrica adhibenda est ad ultimam constringendam torsionem tondendi, genus chalybis compages fulminis, et torques genus pro electrico compages chalybea. Sexangulae magnae clausurae fabricae chalybeae uno ictu, nuce uno, et duobus lavatoribus constans. Torsional genus tondendum chalybe compages fulmen, claustrum, nux, chalybs compages magni hexagoni, fulmen fullonum compositio.