| Utas sekrup d | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | ||||
| P | Pitch | Utas kasar | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | ||
| Utas alus-1 | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||||
| Utas alus-2 | / | / | / | 1 | 1.25 | / | / | / | ||||
| b | L≤125 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 46 | |||
| 125＜L≤200 | / | / | 28 | 32 | 36 | 40 | 44 | 52 | ||||
| L> 200 | / | / | / | / | / | / | 57 | 65 | ||||
| c | min | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 3 | |||
| da | Formulir A | maks | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | ||
| Formulir B | maks | 6.2 | 7.4 | 10 | 12.6 | 15.2 | 17.7 | 20.7 | 25.7 | |||
| dc | maks | 11.8 | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |||
| ds | maks | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |||
| min | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | ||||
| du | maks | 5.5 | 6.6 | 9 | 11 | 13.5 | 15.5 | 17.5 | 22 | |||
| dw | min | 9.8 | 12.2 | 15.8 | 19.6 | 23.8 | 27.6 | 31.9 | 39.9 | |||
| e | min | 8.71 | 10.95 | 14.26 | 16.5 | 17.62 | 19.86 | 23.15 | 29.87 | |||
| f | maks | 1.4 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | |||
| k | maks | 5.4 | 6.6 | 8.1 | 9.2 | 11.5 | 12.8 | 14.4 | 17.1 | |||
| k1 | min | 2 | 2.5 | 3.2 | 3.6 | 4.6 | 5.1 | 5.8 | 6.8 | |||
| r1 | min | 0.25 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | |||
| r2 | maks | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.9 | 1 | 1.2 | |||
| r3 | min | 0.1 | 0.1 | 0.15 | 0.2 | 0.25 | 0.3 | 0.35 | 0.4 | |||
| r4 | ≈ | 3 | 3.4 | 4.3 | 4.3 | 6.4 | 6.4 | 6.4 | 8.5 | |||
| s | max = ukuran nominal | 8 | 10 | 13 | 15 | 16 | 18 | 21 | 27 | |||
| min | 7.78 | 9.78 | 12.73 | 14.73 | 15.73 | 17.73 | 20.67 | 26.67 | ||||
| t | maks | 0.15 | 0.2 | 0.25 | 0.3 | 0.35 | 0.45 | 0.5 | 0.65 | |||
| min | 0.05 | 0.05 | 0.1 | 0.15 | 0.15 | 0.2 | 0.25 | 0.3 | ||||
Kenapa heksagonal, dudu liyane?
Akeh wong sing bakal duwe pitakonan kaya ngono, kenapa bolt kudu dirancang dadi bentuk heksagonal?Lan ora liyane?Hexagon minangka produk kompromi antarane dawa sisih lan sudut twist.
Kanggo bolts karo dawa sisih aneh, loro-lorone saka wrench ora podo karo.Kajaba iku, ing jaman wiwitan, mung ana kunci garpu, lan akeh kunci kunci sing bentuke trompet, mula kunci pas ora cocog kanggo pembangkit listrik.Kajaba iku, amba twist uga faktor penting kanggo nimbang.Yen pojok papat, kunci kudu diuripake 90 derajat kanggo ndandani sekrup, sing ora cocog kanggo instalasi ing papan sing sempit;Yen octagonal utawa decagonal, sanajan amba twisting dadi cilik, pasukan uga cilik, lan gampang kanggo muter.
Mulane, wangun hexagon minangka pilihan umum kanggo bolt.
