
1. DIN7991 txais yuav countersunk taub hau tsim, countersunk taub hau ntsia hlau tsim kom nws tuaj yeem yaug rau saum npoo, yuav tsis protrude, nce qhov zoo nkauj. Nyob rau tib lub sijhawm, lub hex muab kev hloov torque zoo dua, txo qhov muaj peev xwm ntawm zawv zawg thiab kev puas tsuaj. Thaum cov qib siab zog (feem ntau yog qib 10.9) ua los ntawm cov hlau alloy, nws muaj tensile zoo thiab shear tsis kam. DIN7991 cov ntsia hlau ua rau cov ntsia hlau yooj yim rau nruab thiab nruj, thiab tsim nyog rau cov ntawv thov uas nquag disassembly yuav tsum tau
2. Hexagon ca taub hau ntsia hlau DIN7991 yog dav siv nyob rau hauv ntau lub teb, xws li tsheb thiab tsheb tshiab zog teb, tub rog aerospace teb, shipbuilding hnyav kev lag luam teb, khoom kho mob teb, khoom noj machinery teb, hluav taws xob kev sib txuas lus khoom teb thiab cua zog teb.
| Khoom npe | DIN7991 Hex qhov (socket) countersunk taub hau screws |
| Khoom siv | Carbon steel, stainless hlau |
| Nto tiav | Daj zinc, Dub, Xiav thiab dawb zinc, Bleached |
| Xim | Daj, Dub, Blue Dawb, Dawb |
| Standard Number | DIN7991 |
| Qib | 4.8, 8.8, 10.9, 12.9, A2-70, A4-70 |
| Txoj kab uas hla | M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 |
| Xov form | Coarse xov, Medium xov, Fine xov |
| Qhov chaw ntawm keeb kwm | Hebei, Suav |
| Hom | Muyi |
| Pob | Box + cardboard thawv + pallet |
| Cov khoom tuaj yeem kho tau | |
| 1. DIN7991 txais yuav countersunk taub hau tsim, countersunk taub hau ntsia hlau tsim kom nws tuaj yeem yaug rau saum npoo, yuav tsis protrude, nce qhov zoo nkauj. Nyob rau tib lub sijhawm, lub hex muab kev hloov torque zoo dua, txo qhov muaj peev xwm ntawm zawv zawg thiab kev puas tsuaj. Thaum cov qib siab zog (feem ntau yog qib 10.9) ua los ntawm cov hlau alloy, nws muaj tensile zoo thiab shear tsis kam. DIN7991 cov ntsia hlau ua rau cov ntsia hlau yooj yim rau nruab thiab nruj, thiab tsim nyog rau cov ntawv thov uas nquag disassembly yuav tsum tau 2. Hexagon ca taub hau ntsia hlau DIN7991 yog dav siv nyob rau hauv ntau lub teb, xws li tsheb thiab tsheb tshiab zog teb, tub rog aerospace teb, shipbuilding hnyav kev lag luam teb, khoom kho mob teb, khoom noj machinery teb, hluav taws xob kev sib txuas lus khoom teb thiab cua zog teb. | |
| Xov Spec D | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | |
| P | xov pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 |
| α | xov.(+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 | |
| ua dk | max = npe | 6 | 8 | 10 | 12 | 16 | 20 | 24 | 27 | 30 | 33 | 36 | 36 | 39 |
| min | 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 | max = npe | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
| min | 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 | min | 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 | npe | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 10 | 12 | 12 | 14 | 14 |
| min | 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 | max = npe | 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 |
| min | 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 | |