
1. I-DIN7991 ithatha idizayini yentloko ye-countersunk, i-countersunk head screw design ukwenzela ukuba ikwazi ukugungxula phezulu, ayiyi kuphuma, yandise ubuhle. Kwangaxeshanye, i-hex ibonelela ngokugqithiselwa kwetorque engcono, ukunciphisa amathuba okutyibilika kunye nomonakalo. Xa ibakala lamandla aphezulu (ngokuqhelekileyo ibakala le-10.9) elenziwe ngentsimbi ye-alloy lisetyenzisiweyo, linobunzima obuhle kunye nokumelana nokucheba. Izikrufu ze-DIN7991 zenza izikrufu zibe lula ukuzifaka kwaye ziqinise, kwaye zilungele usetyenziso apho kufuneka ukuqhawulwa rhoqo.
2. I-Hexagon flat head screw i-DIN7991 isetyenziswa ngokubanzi kwiinkalo ezininzi, ezifana neemoto kunye nemoto entsha yentsimi yamandla, intsimi ye-aerospace yomkhosi, intsimi yokwakhiwa kweenqanawa, intsimi yezixhobo zonyango, intsimi yomatshini wokutya, intsimi yezixhobo zokunxibelelana nge-elektroniki kunye nentsimi yamandla omoya.
| Igama leMveliso | DIN7991 Hex socket countersunk izikrufu zentloko |
| Izinto eziphathekayo | Intsimbi yekhabhoni, intsimbi engatyiwa |
| Umphezulu Gqiba | Zinc etyheli, iBlacked, Blue and white zinc, Bleached |
| Umbala | Mthubi, Mnyama, Bhlowu Mhlophe, Mhlophe |
| Inani elisemgangathweni | 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 |
| Ifom yomsonto | Umsonto orhabaxa, umsonto ophakathi, umsonto ocolekileyo |
| Indawo yemvelaphi | Hebei, China |
| Uphawu | Muyi |
| Pakisha | Ibhokisi+ibhokisi yekhadibhodi+iphalethi |
| Imveliso inokwenziwa ngokwezifiso | |
| 1. I-DIN7991 ithatha idizayini yentloko ye-countersunk, i-countersunk head screw design ukwenzela ukuba ikwazi ukugungxula phezulu, ayiyi kuphuma, yandise ubuhle. Kwangaxeshanye, i-hex ibonelela ngokugqithiselwa kwetorque engcono, ukunciphisa amathuba okutyibilika kunye nomonakalo. Xa ibakala lamandla aphezulu (ngokuqhelekileyo ibakala le-10.9) elenziwe ngentsimbi ye-alloy lisetyenzisiweyo, linobunzima obuhle kunye nokumelana nokucheba. Izikrufu ze-DIN7991 zenza izikrufu zibe lula ukuzifaka kwaye ziqinise, kwaye zilungele usetyenziso apho kufuneka ukuqhawulwa rhoqo. 2. I-Hexagon flat head screw i-DIN7991 isetyenziswa ngokubanzi kwiinkalo ezininzi, ezifana neemoto kunye nemoto entsha yentsimi yamandla, intsimi ye-aerospace yomkhosi, intsimi yokwakhiwa kweenqanawa, intsimi yezixhobo zonyango, intsimi yomatshini wokutya, intsimi yezixhobo zokunxibelelana nge-elektroniki kunye nentsimi yamandla omoya. | |
| Umsonto Spec D | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | |
| P | umsonto pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 |
| α | intlawulo.(+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 | ubuninzi=oluqhelekileyo | 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 | ubuninzi=oluqhelekileyo | 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 | max | 1.7 | 2.3 | 2.8 | 3.3 | 4.4 | 5.5 | 6.5 | 7 | 7.5 | 8 | 8.5 | 13.1 | 14 |
| s | igama | 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 | |
| max | 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 | ubuninzi=oluqhelekileyo | 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 | |