| 1. | Aircraft fasteners . hexagon thick castle nuts 飞机用紧固件.厚六角槽形螺母 |
| 2. | Aircraft fasteners . hexagon thin castle nuts 飞机用紧固件.薄六角槽形螺母 |
| 3. | Reduced hexagon thick slotted nuts with mj thread Mj螺纹小六角槽型厚螺母 |
| 4. | Reduced hexagon slotted thick nuts with mj thread Mj螺纹小六角槽型厚螺母 |
| 5. | Round head tapping screws with six lobes recess . symbol rlx 带内六角槽的圆头自攻螺钉.符号rlx |
| 6. | Serrations for surgical instruments ; profile angles , groove distances 外科器械的细花键连接.齿形角槽的间距 |
| 7. | Hexagon slotted and castle nuts 带槽六角槽顶螺母 |
| 8. | Hexagon slotted thin nuts 六角槽形扁螺母 |
| 9. | Gauging of hexagon sockets 六角槽的测量 |