| 扣環 | 截面 | 掛耳 | 孔徑 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 公差 | 厚度 | 公差 | 最大 | 值 | 值 |
| RTW | mm | 342 | 341.1~344 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 347 | 346.1~349 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 352 | 351.1~354 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 357 | 356.1~359 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 362 | 361.1~364 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 367 | 366.1~369 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 372 | 371.1~374 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 377 | 376.1~379 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 382 | 381.1~384 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 387 | 386.1~389 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 392 | 391.1~394 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 397 | 396.1~399 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 402 | 401~404 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 407 | 406~409 | 6 | 5.85~6 | 20 | 20.2 | 6 | |
| RTW | mm | 412 | 411~414 | 6 | 5.85~6 | 20 | 20.2 | 6 | |