Small round head low square neck bolts
GB801
Diameter range: M6-M10 Length range: 12mm-100mm
| standard | GB national standard |
|---|---|
| head shape | Round head square neck |
| Material | 304 |
| Grade | A2-70 |
| Surface | whitewash |
| Thread | Fully threaded |
| (mm) | M6 | M8 | M10 | M12 | M16 | M20 |
|---|---|---|---|---|---|---|
| P | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
| dk(max) | 14.2 | 18 | 22.3 | 26.6 | 35 | 43 |
| ds(max) | 6 | 8 | 10 | 12 | 16 | 20 |
| ds(min) | 5.35 | 7.19 | 9.03 | 10.86 | 14.7 | 18.38 |
| e(min) | 7.64 | 10.2 | 12.8 | 15.37 | 20.57 | 25.73 |
| k1(max) | 3 | 3 | 4 | 4 | 5 | 5 |
| k1(min) | 2.4 | 2.4 | 3.2 | 3.2 | 4.2 | 4.2 |
| k(max) | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 |
| k(min) | 3 | 4 | 5 | 6 | 8 | 10 |
| r(min) | 0.5 | 0.8 | 0.8 | 1.2 | 1.2 | 1.6 |
| s(max) | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
| s(min) | 5.88 | 7.85 | 9.85 | 11.82 | 15.82 | 19.79 |
| steel | Stainless steel | ||
| General technical conditions | GB/T 16938 | ||
| Thread | tolerance | 6ga | |
| standard | GB/T 193、GB/T 9145 | ||
| Mechanical properties | Grade | 4.8, 8.8, 10.9 | A2-50、A2-70、A4-70、A4-50 |
| standard | GB/T 3098.1 | GB/T 3098.6 | |
| tolerance | Product grade | Except for the provisions in Chapter 4, the rest are classified as Class B | |
| standard | GB/T 3103.1 | ||
| surface treatment | Untreated (no coating/plating); | Simple treatment (cleaning and polishing); | |
| Electroplating technical requirements shall comply with GB/T 5267.1; | Passivation b | ||
| Technical requirements for non-electrolytic zinc flake coating shall comply with GB/T 5267.2; | |||
| Hot dip galvanizing technical requirements according to GB/T 5267.3 | |||
| If other technical requirements or surface treatment are required, it should be agreed upon by the supplier and the buyer. | |||
| surface defects | GB/T 5779.1 | ||
| Acceptance and packaging | GB/T 90.1、GB/T 90.2 | ||
| a Depending on the selected coating system, other tolerance zone positions may be required before coating, see GB/T 5267.1, GB/T 5267.2, GB/T 5267.3; | |||
| b GB/T 5267.4 provides the passivation treatment method | |||
