bolltau fflans DIN 6921 Dosbarth 8.8 a 10.9
Enw cynhyrchion | HEX BOLT DIN 931/ISO4014 hanner edefyn |
Safonol | DIN, ASTM / ANSI JIS EN ISO, AS, GB |
Gradd | Dur Gradd: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9;SAE: Gr.2,5,8; ASTM: 307A, A325, A490, |
Gorffen | Sinc (Melyn, Gwyn, Glas, Du), Hop Dip Galfanedig (HDG), Du Ocsid, Geomet, Dacroment, anodization, Nickel plated, Sinc-Nicel plated |
Proses Gynhyrchu | M2-M24: Brogaod Oer, Gofannu Poeth M24-M100, Peiriannu a CNC ar gyfer clymwr wedi'i addasu |
Amser Arweiniol Cynhyrchion wedi'u Customized | 30-60 diwrnod, |

Thread Sgriw | M1.6 | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | (M7) | M8 | M10 | M12 | ||
P | Cae | 0.35 | 0.4 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1 | 1.25 | 1.5 | 1.75 | |
b | L≤125 | 9 | 10 | 11 | 12 | 13 | 14 | 16 | 18 | 20 | 22 | 26 | 30 | |
125<L≤200 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 26 | 28 | 32 | 36 | ||
L>200 | 28 | 29 | 30 | 31 | 32 | 33 | 35 | 37 | 39 | 41 | 45 | 49 | ||
c | max | 0.25 | 0.25 | 0.25 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 | |
min | 0.1 | 0.1 | 0.1 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | ||
da | max | 2 | 2.6 | 3.1 | 3.6 | 4.1 | 4.7 | 5.7 | 6.8 | 7.8 | 9.2 | 11.2 | 13.7 | |
ds | uchafswm = maint enwol | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | |
Gradd A | min | 1.46 | 1.86 | 2.36 | 2.86 | 3.32 | 3.82 | 4.82 | 5.82 | 6.78 | 7.78 | 9.78 | 11.73 | |
Gradd B | min | 1.35 | 1.75 | 2.25 | 2.75 | 3.2 | 3.7 | 4.7 | 5.7 | 6.64 | 7.64 | 9.64 | 11.57 | |
dw | Gradd A | min | 2.54 | 3.34 | 4.34 | 4.84 | 5.34 | 6.2 | 7.2 | 8.88 | 9.63 | 11.63 | 14.63 | 16.63 |
Gradd B | min | 2.42 | 3.22 | 4.22 | 4.72 | 5.22 | 6.06 | 7.06 | 8.74 | 9.47 | 11.47 | 14.47 | 16.47 | |
e | Gradd A | min | 3.41 | 4.32 | 5.45 | 6.01 | 6.58 | 7.66 | 8.79 | 11.05 | 12.12 | 14.38 | 17.77 | 20.03 |
Gradd B | min | 3.28 | 4.18 | 5.31 | 5.88 | 6.44 | 7.5 | 8.63 | 10.89 | 11.94 | 14.2 | 17.59 | 19.85 | |
L1 | max | 0.6 | 0.8 | 1 | 1 | 1 | 1.2 | 1.2 | 1.4 | 1.4 | 2 | 2 | 3 | |
k | Maint Enwol | 1.1 | 1.4 | 1.7 | 2 | 2.4 | 2.8 | 3.5 | 4 | 4.8 | 5.3 | 6.4 | 7.5 | |
Gradd A | max | 1.225 | 1.525 | 1.825 | 2. 125 | 2.525 | 2. 925 | 3.65 | 4.15 | 4.95 | 5.45 | 6.58 | 7.68 | |
min | 0. 975 | 1.275 | 1.575 | 1.875 | 2.275 | 2.675 | 3.35 | 3.85 | 4.65 | 5.15 | 6.22 | 7.32 | ||
Gradd B | max | 1.3 | 1.6 | 1.9 | 2.2 | 2.6 | 3 | 3.74 | 4.24 | 5.04 | 5.54 | 6.69 | 7.79 | |
min | 0.9 | 1.2 | 1.5 | 1.8 | 2.2 | 2.6 | 3.26 | 3.76 | 4.56 | 5.06 | 6.11 | 7.21 | ||
k1 | Gradd A | min | 0.68 | 0.89 | 1.1 | 1.31 | 1.59 | 1.87 | 2.35 | 2.7 | 3.26 | 3.61 | 4.35 | 5.12 |
Gradd B | min | 0.63 | 0.84 | 1.05 | 1.26 | 1.54 | 1.82 | 2.28 | 2.63 | 3.19 | 3.54 | 4.28 | 5.05 | |
r | min | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.25 | 0.4 | 0.4 | 0.6 | |
s | uchafswm = maint enwol | 3.2 | 4 | 5 | 5.5 | 6 | 7 | 8 | 10 | 11 | 13 | 16 | 18 | |
Gradd A | min | 3.02 | 3.82 | 4.82 | 5.32 | 5.82 | 6.78 | 7.78 | 9.78 | 10.73 | 12.73 | 15.73 | 17.73 | |
Gradd B | min | 2.9 | 3.7 | 4.7 | 5.2 | 5.7 | 6.64 | 7.64 | 9.64 | 10.57 | 12.57 | 15.57 | 17.57 | |
Hyd yr Edefyn b | - | - | - | - | - | - | - | - | - | - | - | - | ||
Thread Sgriw | (M14) | M16 | (M18) | M20 | (M22) | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | ||
P | Cae | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | |
b | L≤125 | 34 | 38 | 42 | 46 | 50 | 54 | 60 | 66 | 72 | - | - | - | |
125<L≤200 | 40 | 44 | 48 | 52 | 56 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | ||
L>200 | 53 | 57 | 61 | 65 | 69 | 73 | 79 | 85 | 91 | 97 | 103 | 109 | ||
c | max | 0.6 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 1 | 1 | |
min | 0.15 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | ||
da | max | 15.7 | 17.7 | 20.2 | 22.4 | 24.4 | 26.4 | 30.4 | 33.4 | 36.4 | 39.4 | 42.4 | 45.6 | |
ds | uchafswm = maint enwol | 14 | 16 | 18 | 20 | 22 | 24 | 27 | 30 | 33 | 36 | 39 | 42 | |
Gradd A | min | 13.73 | 15.73 | 17.73 | 19.67 | 21.67 | 23.67 | - | - | - | - | - | - | |
Gradd B | min | 13.57 | 15.57 | 17.57 | 19.48 | 21.48 | 23.48 | 26.48 | 29.48 | 32.38 | 35.38 | 38.38 | 41.38 | |
dw | Gradd A | min | 19.64 | 22.49 | 25.34 | 28.19 | 31.71 | 33.61 | - | - | - | - | - | - |
Gradd B | min | 19.15 | 22 | 24.85 | 27.7 | 31.35 | 33.25 | 38 | 42.75 | 46.55 | 51.11 | 55.86 | 59.95 | |
e | Gradd A | min | 23.36 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 | - | - | - | - | - | - |
Gradd B | min | 22.78 | 26.17 | 29.56 | 32.95 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | |
L1 | max | 3 | 3 | 3 | 4 | 4 | 4 | 6 | 6 | 6 | 6 | 6 | 8 | |
k | Maint Enwol | 8.8 | 10 | 11.5 | 12.5 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | |
Gradd A | max | 8.98 | 10.18 | 11.715 | 12.715 | 14.215 | 15.215 | - | - | - | - | - | - | |
min | 8.62 | 9.82 | 11.285 | 12.285 | 13.785 | 14.785 | - | - | - | - | - | - | ||
Gradd B | max | 9.09 | 10.29 | 11.85 | 12.85 | 14.35 | 15.35 | 17.35 | 19.12 | 21.42 | 22.92 | 25.42 | 26.42 | |
min | 8.51 | 9.71 | 11.15 | 12.15 | 13.65 | 14.65 | 16.65 | 18.28 | 20.58 | 22.08 | 24.58 | 25.58 | ||
k1 | Gradd A | min | 6.03 | 6.87 | 7.9 | 8.6 | 9.65 | 10.35 | - | - | - | - | - | - |
Gradd B | min | 5.96 | 6.8 | 7.81 | 8.51 | 9.56 | 10.26 | 11.66 | 12.8 | 14.41 | 15.46 | 17.21 | 17.91 | |
r | min | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 | 1 | 1 | 1 | 1 | 1 | 1.2 | |
s | uchafswm = maint enwol | 21 | 24 | 27 | 30 | 34 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | |
Gradd A | min | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 | - | - | - | - | - | - | |
Gradd B | min | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | |
Hyd yr Edefyn b | - | - | - | - | - | - | - | - | - | - |
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Thread Sgriw | (M45) | M48 | (M52) | M56 | (M60) | M64 |
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P | Cae | 4.5 | 5 | 5 | 5.5 | 5.5 | 6 |
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b | L≤125 | - | - | - | - | - | - |
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125<L≤200 | 102 | 108 | 116 | - | - | - |
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L>200 | 115 | 121 | 129 | 137 | 145 | 153 |
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c | max | 1 | 1 | 1 | 1 | 1 | 1 |
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min | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
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da | max | 48.6 | 52.6 | 56.6 | 63 | 67 | 71 |
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ds | uchafswm = maint enwol | 45 | 48 | 52 | 56 | 60 | 64 |
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Gradd A | min | - | - | - | - | - | - |
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Gradd B | min | 44.38 | 47.38 | 51.26 | 55.26 | 59.26 | 63.26 |
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dw | Gradd A | min | - | - | - | - | - | - |
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Gradd B | min | 64.7 | 69.45 | 74.2 | 78.66 | 83.41 | 88.16 |
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e | Gradd A | min | - | - | - | - | - | - |
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Gradd B | min | 76.95 | 82.6 | 88.25 | 93.56 | 99.21 | 104.86 |
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L1 | max | 8 | 10 | 10 | 12 | 12 | 13 |
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k | Maint Enwol | 28 | 30 | 33 | 35 | 38 | 40 |
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Gradd A | max | - | - | - | - | - | - |
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min | - | - | - | - | - | - |
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Gradd B | max | 28.42 | 30.42 | 33.5 | 35.5 | 38.5 | 40.5 |
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min | 27.58 | 29.58 | 32.5 | 34.5 | 37.5 | 39.5 |
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k1 | Gradd A | min | - | - | - | - | - | - |
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Gradd B | min | 19.31 | 20.71 | 22.75 | 24.15 | 26.25 | 27.65 |
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r | min | 1.2 | 1.6 | 1.6 | 2 | 2 | 2 |
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s | uchafswm = maint enwol | 70 | 75 | 80 | 85 | 90 | 95 |
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Gradd A | min | - | - | - | - | - | - |
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Gradd B | min | 68.1 | 73.1 | 78.1 | 82.8 | 87.8 | 92.8 |
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Hyd yr Edefyn b | - | - | - | - | - | - |
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Nodweddion a Manteision
Mae DIN 6921 yn fath o bollt fflans hecs a ddefnyddir yn gyffredin mewn cymwysiadau diwydiannol ac adeiladu.Mae gan y bollt hwn fflans sy'n gweithredu fel golchwr adeiledig ac yn helpu i ddosbarthu'r llwyth ar draws arwynebedd ehangach.Mae pen y bollt yn hecsagonol o ran siâp ac mae'n hawdd ei dynhau gan ddefnyddio wrench neu soced.
Defnyddir y bollt hwn yn eang mewn peiriannau, diwydiannau modurol, ac mewn adeiladu, oherwydd ei gryfder a'i wydnwch eithriadol.Mae wedi'i wneud o ddeunyddiau o ansawdd uchel fel dur di-staen, titaniwm, a dur carbon, sy'n darparu ymwrthedd hirdymor yn erbyn traul, cyrydiad a rhwd.
Mae bolltau DIN 6921 yn cael eu cynhyrchu i oddefiannau tynn ac yn destun mesurau rheoli ansawdd trwyadl i sicrhau eu bod yn bodloni'r safonau uchaf o ansawdd a pherfformiad.Mae'r bolltau hyn ar gael mewn ystod o feintiau, hyd, a gorffeniadau i weddu i wahanol gymwysiadau a gofynion.
Yn ogystal, mae bolltau DIN 6921 yn cadw at safonau diwydiant llym, gan gynnwys safonau DIN (Deutsches Institut für Normung) ac ISO (Sefydliad Safoni Rhyngwladol).Maent hefyd yn cael eu profi am eu caledwch, cryfder tynnol, a chywirdeb dimensiwn cyn cael eu rhyddhau i'w gwerthu.Mae'r holl ffactorau hyn yn cyfrannu at ansawdd gwych a pherfformiad dibynadwy bollt DIN 6921.
Yn gyffredinol, mae bollt DIN 6921 yn ddatrysiad cau amlbwrpas a chadarn a ddefnyddir mewn llawer o wahanol ddiwydiannau.Fe'i cynlluniwyd i ddarparu pŵer dal rhagorol, ymwrthedd i draul, a rhwyddineb gosod.Mae ei adeiladu o ansawdd uchel a'i lynu'n gaeth at safonau'r diwydiant yn ei wneud yn ddewis gorau i beirianwyr, dylunwyr a gweithwyr adeiladu proffesiynol ledled y byd.