| 1. | Countersunk head screws - head configuration and gauging 埋头螺钉.头部外形和测量 |
| 2. | Countersunk head screws - head configuration and gauging 头部形状和测量 |
| 3. | Fasteners . countersunk head screws . head configuration and gauging 紧固件.沉头螺钉.头部的构型和测量 |
| 4. | Countersinks for countersunk head screws with head configuration in accordance with iso 7721 头部外形符合iso 7721的沉头螺钉用沉头 |
| 5. | Countersinks for countersunk head screws with head configuration in accordance with iso 7721 头部外形符合iso 7721标准的沉头螺钉的埋头孔 |
| 6. | Iso 7721 - 1983 countersunk head screws ; head configuration and gauging iso 7721 : 1983 ; german version en 27721 : 1991 沉头螺钉.沉头形状和测量 |
| 7. | Countersinks for countersunk head screws with head configuration in accordance with iso 7721 iso 15065 : 2005 ; german version en iso 15065 : 2005 头部外形合乎iso 7721标准的沉头螺钉的埋头孔 |