cup square bolt 方头螺栓
square head bolt [机] 方头螺栓 ; 方头螺钉
square bolt WESTBANK 方头螺栓
square neck bolt [机] 方颈螺栓 ; 方镇螺栓
SQUARE BOLT M8 方型螺栓
countersunk flat square bolt 方肩埋头螺栓
square-head bolt 方头螺栓
round head square-neck bolt 圆头方颈螺栓
flattened square head bolt 平顶方头螺栓
The wooden bolt heads are arranged in alternating geometric patterns-specifically an eight-studded circle and a square with inverted corners.
木螺栓头被设计在交替的几何图案中——特别是一个镶嵌圆形和一个正方形倒角。
Slam latch is screwed onto latch support which is either screwed or welded to the door. Assembled without insert it can be opened with a tapered square key. Bolt has free stroke.
这种锁舌用螺丝装在锁支架上，而锁支架用螺丝固定或焊接在门上，无锁芯的装配时，可用锥形四方匙开启锁栓为自由行程。
Mesh column connection with the use of semi-circular bolt head square neck, with anti-theft rings and washers, to prevent the separation can be artificially demolition.
网片与立柱的连接采用半圆头方颈螺栓，配以防盗垫圈，能防止隔离栅被人为地随意拆卸。
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