Torx pan head machine screws
GB2672
Diameter range: M1.4-M10 Length range: 3mm-100mm
| standard | GB national standard |
|---|---|
| head shape | pan head |
| Groove | plum blossom trough |
| Thread | Fully threaded |
| (mm) | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 |
|---|---|---|---|---|---|---|---|---|---|
| P | 0.4 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.25 | 1.5 |
| da(max) | 2.6 | 3.1 | 3.6 | 4.1 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 |
| dk(max) | 4 | 5 | 5.6 | 7 | 8 | 9.5 | 12 | 16 | 20 |
| dk(min) | 3.7 | 4.7 | 5.3 | 6.64 | 7.64 | 9.14 | 11.57 | 15.57 | 19.48 |
| k(max) | 1.6 | 2.1 | 2.4 | 2.6 | 3.1 | 3.7 | 4.6 | 6 | 7.5 |
| k(min) | 1.46 | 1.96 | 2.26 | 2.46 | 2.92 | 3.52 | 4.3 | 5.7 | 7.14 |
| No. | T6 | T8 | T10 | T15 | T20 | T25 | T30 | T45 | T50 |
| e | 1.75 | 2.4 | 2.8 | 3.35 | 3.95 | 4.5 | 5.6 | 7.95 | 8.95 |
| t(max) | 0.77 | 1.04 | 1.27 | 1.33 | 1.66 | 1.91 | 2.42 | 3.18 | 4.02 |
| t(min) | 0.63 | 0.91 | 1.01 | 1.07 | 1.27 | 1.52 | 2.02 | 2.79 | 3.62 |
| r(min) | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 |
| steel | Stainless steel | nonferrous metals | ||
| General technical conditions | GB/T 16938 | |||
| Thread | tolerance | 6g | ||
| standard | GB/T 193、GB/T 9145 | |||
| Mechanical properties | Grade | d＜3mm: according to the agreement; | A2-70、A3-70 | d＜3mm: according to the agreement; |
| d≥3mm: 4.8 | d≥3mm：CU2、CU3 | |||
| standard | d＜3mm: according to the agreement; | GB/T 3098.6 | d＜3mm: according to the agreement; | |
| d≥3mm：GB/T 3098.1 | d≥3mm：GB/T 3098.10 | |||
| tolerance | Product grade | A | ||
| standard | GB/T 3103.1 | |||
| Hexagonal flower shape | GB/T 6188 | |||
| surface treatment | Without treatment; | Simple handling; | Simple handling; | |
| Electroplating technical requirements shall comply with GB/T 5267.1; | Passivation treatment technical requirements according to GB/T 5267.4 | Electroplating technical requirements according to GB/T 5267.1 | ||
| Technical requirements for non-electrolytic zinc flake coating according to GB/T 5267.2 | ||||
| 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 | |||
