
1. I-DIN7991 yamukela idizayini yekhanda le-countersunk, i-countersunk head screw design ukuze ikwazi ukushelela phezulu, ngeke iphumele ngaphandle, ikhulise ubuhle. Ngesikhathi esifanayo, i-hex inikeza ukudluliswa kwe-torque okungcono, ukunciphisa amathuba okuslayida nokulimala. Lapho kusetshenziswa izinga eliphezulu lamandla (ngokuvamile ibanga le-10.9) elenziwe ngensimbi ye-alloy lisetshenziswa, linokumelana okuhle kwe-tensile kanye ne-shear. Izikulufu ze-DIN7991 zenza kube lula ukuzifaka nokuqiniswa kwezikulufu, futhi zilungele izinhlelo zokusebenza lapho kudingeka ukuqaqa njalo.
2. I-Hexagon flat head screw i-DIN7991 isetshenziswa kabanzi emikhakheni eminingi, njengezimoto nemoto inkambu entsha yamandla, inkambu ye-aerospace yezempi, inkambu yemboni esindayo yokwakha umkhumbi, inkambu yemishini yezokwelapha, inkambu yemishini yokudla, inkambu yemishini yokuxhumana ngogesi kanye nenkundla yamandla omoya.
| Igama Lomkhiqizo | I-DIN7991 Hex socket countersunk head screws |
| Okubalulekile | Carbon steel, Stainless steel |
| I-Surface Qeda | I-zinc ephuzi, imnyama, i-zinc eluhlaza okwesibhakabhaka nomhlophe, iBleached |
| Umbala | Okuphuzi, Okumnyama, Okumhlophe Okuluhlaza, Okumhlophe |
| Inombolo Ejwayelekile | I-DIN7991 |
| Ibanga | 4.8, 8.8, 10.9, 12.9, A2-70, A4-70 |
| Ububanzi | M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 |
| Ifomu lochungechunge | Intambo eqinile, intambo emaphakathi, intambo ecolekile |
| Indawo yemvelaphi | I-Hebei, China |
| Ibhrendi | Muyi |
| Pakisha | Ibhokisi+ibhokisi lekhadibhodi+iphalethi |
| Umkhiqizo ungenziwa ngokwezifiso | |
| 1. I-DIN7991 yamukela idizayini yekhanda le-countersunk, i-countersunk head screw design ukuze ikwazi ukushelela phezulu, ngeke iphumele ngaphandle, ikhulise ubuhle. Ngesikhathi esifanayo, i-hex inikeza ukudluliswa kwe-torque okungcono, ukunciphisa amathuba okuslayida nokulimala. Lapho kusetshenziswa izinga eliphezulu lamandla (ngokuvamile ibanga le-10.9) elenziwe ngensimbi ye-alloy lisetshenziswa, linokumelana okuhle kwe-tensile kanye ne-shear. Izikulufu ze-DIN7991 zenza kube lula ukuzifaka nokuqiniswa kwezikulufu, futhi zilungele izinhlelo zokusebenza lapho kudingeka ukuqaqa njalo. 2. I-Hexagon flat head screw i-DIN7991 isetshenziswa kabanzi emikhakheni eminingi, njengezimoto nemoto inkambu entsha yamandla, inkambu ye-aerospace yezempi, inkambu yemboni esindayo yokwakha umkhumbi, inkambu yemishini yezokwelapha, inkambu yemishini yokudla, inkambu yemishini yokuxhumana ngogesi kanye nenkundla yamandla omoya. | |
| I-Thread Spec D | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | |
| P | intambo yentambo | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 |
| α | inani.(+2) | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 60° | 60° |
| b | L≤125 | 12 | 14 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 |
| 125<L ≤200 | / | / | / | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | |
| L>200 | / | / | / | / | / | 45 | 49 | 53 | 57 | 61 | 65 | 69 | 73 | |
| dk | ubuningi=igama | 6 | 8 | 10 | 12 | 16 | 20 | 24 | 27 | 30 | 33 | 36 | 36 | 39 |
| imiz | 5.7 | 7.64 | 9.64 | 11.57 | 15.57 | 19.48 | 23.48 | 26.48 | 29.48 | 32.38 | 35.38 | 35.38 | 38.38 | |
| ds | ubuningi=igama | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
| imiz | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 17.73 | 19.67 | 21.67 | 23.67 | |
| e | imiz | 2.3 | 2.87 | 3.44 | 4.58 | 5.72 | 6.86 | 9.15 | 11.43 | 11.43 | 13.72 | 13.72 | 16 | 16 |
| k | ubuningi | 1.7 | 2.3 | 2.8 | 3.3 | 4.4 | 5.5 | 6.5 | 7 | 7.5 | 8 | 8.5 | 13.1 | 14 |
| s | okuzisholo | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 10 | 12 | 12 | 14 | 14 |
| imiz | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 10.025 | 12.032 | 12.032 | 14.032 | 14.032 | |
| ubuningi | 2.1 | 2.6 | 3.1 | 4.12 | 5.14 | 6.14 | 8.175 | 10.175 | 10.175 | 12.212 | 12.212 | 14.212 | 14.212 | |
| t | ubuningi=igama | 1.2 | 1.8 | 2.3 | 2.5 | 3.5 | 4.4 | 4.6 | 4.8 | 5.3 | 5.5 | 5.9 | 8.8 | 10.3 |
| imiz | 0.95 | 1.55 | 2.05 | 2.25 | 3.2 | 4.1 | 4.3 | 4.5 | 5 | 5.2 | 5.6 | 8.44 | 9.87 | |