BSL® Hexagon Flange Nuts are standard automotive parts. They are used for detachable thread fastening between automotive sheet metal and components.
BSL® Hexagon Flange Nuts are standard automotive parts. They are used for detachable thread fastening between automotive sheet metal and components.
| Product Code | Thread specificationD | c | da | dc | dw | e | h | s | ||||
| Min | max | min | Max | Min | Min | Nominal | max | min | max | min | ||
| B4020-F-05-0060 | M5 | 1 | 5.75 | 5 | 11.8 | 9.8 | 8.79 | 6 | 6.2 | 5.7 | 8 | 7.78 |
| B4020-F-06-0070 | M6 | 1.1 | 6.75 | 6 | 14.2 | 12.2 | 11.05 | 7 | 7.3 | 6.8 | 10 | 9.78 |
| B4020-F-08-0090 | M8 | 1.2 | 8.75 | 8 | 17.9 | 15.8 | 14.38 | 9 | 9.4 | 8.74 | 13 | 12.73 |
| B4020-F-10-0110 | M10 | 1.5 | 10.8 | 10 | 21.8 | 19.6 | 16.64 | 11 | 11.4 | 10.34 | 15 | 14.73 |
| B4020-F-12-0130 | M12 | 1.8 | 13 | 12 | 26 | 23.8 | 20.03 | 13 | 13.8 | 12.57 | 18 | 17.73 |
| B4020-F-14-0150 | M14 | 2.1 | 15.1 | 14 | 29.9 | 27.6 | 23.36 | 15 | 15.9 | 14.8 | 21 | 20.67 |
| B4020-F-16-0180 | M16 | 2.4 | 17.3 | 16 | 34.5 | 31.9 | 26.75 | 18 | 18.3 | 17.2 | 24 | 23.67 |
| B4020-F-20-0220 | M20 | 3 | 21.6 | 20 | 42.8 | 39.9 | 32.95 | 22 | 22.4 | 20.3 | 30 | 29.16 |
| B4020-F-08-3090 | M8×1 | 1.2 | 8.75 | 8 | 17.9 | 15.8 | 14.38 | 9 | 9.4 | 8.74 | 13 | 12.73 |
| B4020-F-10-3110 | M10×1 | 1.5 | 10.8 | 10 | 21.8 | 19.6 | 16.64 | 11 | 11.4 | 10.34 | 15 | 14.73 |
| B4020-F-10-9110 | M10×1.25 | 1.5 | 10.8 | 10 | 21.8 | 19.6 | 16.64 | 11 | 11.4 | 10.34 | 15 | 14.73 |
| B4020-F-12-4130 | M12×1.5 | 1.8 | 13 | 12 | 26 | 23.8 | 20.03 | 13 | 13.8 | 12.57 | 13 | 12.73 |
| B4020-F-12-9130 | M12×1.25 | 1.8 | 13 | 12 | 26 | 23.8 | 20.03 | 13 | 13.8 | 12.57 | 18 | 17.73 |
| B4020-F-14-4150 | M14×1.5 | 2.1 | 15.1 | 14 | 29.9 | 27.6 | 23.36 | 15 | 15.9 | 14.8 | 18 | 17.73 |
| B4020-F-16-4180 | M16×1.5 | 2.4 | 17.3 | 16 | 34.5 | 31.9 | 26 | 18 | 18.3 | 17.2 | 24 | 23.67 |
| B4020-F-20-4220 | M20×1.5 | 3.0 | 21.6 | 20 | 42.8 | 39.9 | 32.95 | 22 | 22.4 | 20.3 | 30 | 29.16 |
| Material | steel | |
| General technical conditions | GB/T 16938 | |
| Thread | tolerance | 6H |
| standard | GB/T 193、GB/T 9145 | |
| Mechanical properties | grade | 8、10(QT)、12(QT) |
| standard | GB/T 3098.2、GB/T 3098.9 | |
| tolerance | Product Grade | D≤16 mm:Aclass；D>16 mm;Bclass |
| standard | GB/T 3103.1 | |
| Surface defects | GB/T 5779.2 | |
| Surface treatment | Without treatment; Electroplating technical requirements shall be in accordance with GB/T 5267.1; Non-electrolytic zinc flake coating technical requirements shall be in accordance with GB/T 5267.2; If other technical requirements or surface treatment are required, it shall be agreed upon by the supplier and the buyer. |
|
| Acceptance and packaging | GB/T 90.1、GB/T 90.2 | |
| QT – Quenched and tempered. | ||
Commonly used material grades and surface treatment methods are as follows:
| Product Name | Material | Material grade/standard | Surface treatment |
| Hexagon flange nut B4020-F | SWCH10A | JIS G3507-1 | Galvanizing |
| SWCH22A | |||
| 10B21 | SAE J403 |
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