Filter threaded cover plate structure with stable tapping

The utility model discloses a filter thread cover plate structure with stable tapping, which belongs to the technical field of filter parts, and comprises a thread cover plate main body, a thread opening part is arranged at the central position of the thread cover plate main body, and a step-shaped plate body is arranged on the thread opening part. The taper deformation of the thread opening part is avoided through the step-shaped plate body, so that the first tooth of the internal thread is complete and stable, meanwhile, the step-shaped plate body can play a guiding role, the external thread of the installed screw rod can be guided to the position of the first tooth of the internal thread, and the installation process is easier and more stable; the device is simple in structure, controllable in use cost and suitable for industrial production and popularization. 本实用新型公开了一种攻丝稳定的滤清器螺纹盖板结构，属于滤清器零件技术领域，该一种攻丝稳定的滤清器螺纹盖板结构，包括螺纹盖板主体，所述螺纹盖板主体的中心位置处开设有螺纹口部，所述螺纹口部上设置有台阶状板体。螺纹口部通过台阶状板体避免了锥度变形，使得了内螺纹第一牙完整稳定，同时台阶状板体可以起到导向