沉头机螺钉有哪两种头型？
Name two head styles of machine screws that are countersunk.
锥头机螺钉垫圈-用于屋顶保持固定孔水密。
Cone head drive screw with washer - used on roof for keeping fixing holes watertight.
主要生产各系列的自鉆自攻螺钉、干壁钉、纤维板钉、自攻螺钉、机螺钉及各种非标准产品。
This company mainly produces various series of self-drilling screw with tapping screw, dry wall screw, fiber board screw, self-tapping screw, machine screw, all kinds of non-standard goods.
公司主要生产各系列的自钻自攻螺钉、干壁钉、纤维板钉、自攻螺钉、机螺钉及各种非标准产品。
This company mainly produces various series of drilling screw with tapping screw dry wall screw fiber board screw self - tapping screw machine screw all kinds of non-standard goods.
可依据国标、美标、英制等标准生产各种紧固件，主导产品：木螺钉、自攻螺钉、机螺钉、纤维板钉等。
We can produce all kinds of fasteners on GB, ANSI, BS, and other standards. Our main products are wood screws, self-tapping screws, machine screws, chipboard screws, etc.
不锈钢螺丝系列：内六角螺栓，紧钉螺钉，机螺钉，自攻钉，马车螺丝，膨胀螺丝，吊环螺丝，牙条，开口销，平垫，弹垫等。
Stainless steel screw, hex bolt series: tighten screw, machine screw, nail screw, self-tapping screw, expansion bolts, carriage, lifting eyebolt, a tooth, flat mat, play split cotters cushion etc.
我司主要生产M1.4-M6系列机螺钉、 自攻螺钉及三棱自攻锁紧螺钉，产品执行JIS标准、GB标准、ANSI标准、DIN标准，原材料选用优质的碳素钢、铜及不锈钢等。
The company is a manufacturer specialized in producing M1.4-M6 screws, tapping screws and three-edge thread forming screws according with the standard of JIS, GB, ANSI and DIN.
我司主要生产M1.4-M6系列机螺钉、 自攻螺钉及三棱自攻锁紧螺钉，产品执行JIS标准、GB标准、ANSI标准、DIN标准，原材料选用优质的碳素钢、铜及不锈钢等。
The company is a manufacturer specialized in producing M1.4-M6 screws, tapping screws and three-edge thread forming screws according with the standard of JIS, GB, ANSI and DIN.
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