Knurled high head screw
GB834
Diameter range: M2-M10 Length range: 5mm-80mm
| standard | GB national standard |
|---|---|
| head shape | Big crew cut |
| Thread | Fully threaded |
| (mm) | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 |
|---|---|---|---|---|---|---|---|---|---|
| P | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 |
| dk(max) | 7.22 | 8.22 | 9.22 | 11.27 | 12.27 | 16.27 | 20.33 | 24.33 | 30.33 |
| dk(min) | 6.78 | 7.78 | 8.78 | 10.73 | 11.73 | 15.73 | 19.67 | 23.67 | 29.67 |
| k(max) | 4.7 | 5 | 5.5 | 7 | 8 | 10 | 12 | 16 | 20 |
| k(min) | 4.52 | 4.82 | 5.32 | 6.78 | 7.78 | 9.78 | 11.57 | 15.57 | 19.84 |
| k1 | 2 | 2 | 2.2 | 2.8 | 3 | 4 | 5 | 6 | 8 |
| h | 0.8 | 1 | 1 | 1.2 | 1.5 | 2 | 2.5 | 3 | 3.8 |
| r(min) | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 |
| d1 | 4 | 4.5 | 5 | 6 | 8 | 10 | 12 | 16 | 20 |
| d2 | 3.6 | 3.8 | 4.4 | 5.2 | 6.4 | 9 | 11 | 13 | 17.5 |
| steel | Stainless steel | ||
| Thread | tolerance | 6g | |
| standard | GB/T 196、GB/T 197 | ||
| Mechanical properties | Grade | 4.8 | C4-50、A1-50 |
| standard | GB/T 3098.1 | GB/T 3098.6 | |
| tolerance | Product grade | Except for the provisions in Chapter 3, the rest are classified as Class A | |
| standard | GB/T 3103.1 | ||
| Knurling | Straight grain GB/T 6403.3 | ||
| surface treatment | ① No treatment; | without treatment | |
| ② Galvanized passivation GB/T 5267 | |||
| Acceptance and packaging | GB/T 90 | ||
