Nuts are parts that closely connect mechanical equipment. Nuts and bolts of the same specification can only be connected together through the inner threads. For example, m4-p0.7 nuts can only be connected with m4-p0.7 series bolts (in nuts, M4 refers to the inner diameter of the nut is about 4mm, and 0.7 refers to the distance between the two threads is 0.7mm); The same is true for American products. For example, a 1/4-20 nut can only be matched with a 1/4-20 screw (1/4 means that the inner diameter of the nut is about 0.25 inches, and 20 means that there are 20 teeth in each inch).

stainless steel

Self locking nut, lock nut, lock nut, four jaw nut, screw in nut, safety nut, thin rod screw connecting nut, self-locking hexagonal cap nut, nut for special anchor screw, hexagonal crown thin nut and ring nut.

Fine tooth all metal hexagon flange lock nut, all metal hexagon flange lock nut, fine tooth non-metal insert hexagon flange lock nut, fine tooth hexagon flange nut

Welded square nut, welded hexagon nut, fastening nut and embedded round nut

Slotted round nut, side perforated round nut, end perforated round nut and small round nut

Round nut, ring nut, butterfly nut

Copper

Copper nut, inlaid copper nut, knurled copper nut, inlaid copper nut, injection molded copper nut, etc

Alloy

Zinc copper alloy nut, etc

Insert nut

Copper nuts made of various embossed wires (usually lead brass, such as H59, 3604, 3602). The embedded knurled copper nuts we are in daily contact with are processed by precision automatic lathes. The reference standard for embedded knurled copper nuts comes from the national standard gb/t809.

Jam nut

The main operation method of the embedded knurled copper nut is injection molding. After heating, it is embedded into the plastic parts or directly injected into the mold. If injection molding is used, the melting point of pa/nylon/pet is above 200 ° C. after the embedded nut is hot melted into the plastic parts, the temperature rapidly increases. After injection molding, the plastic body rapidly cools and crystallizes and hardens. If the temperature of the embedded nut is still high, It is possible that the copper nut will come loose or crack at the place where it contacts the plastic part. Therefore, copper nuts instead of carbon steel nuts are used in the injection molding of embedded nuts.

There are two ways to form the knurled external lines of embedded copper nuts. One is to use copper raw materials for knurled forming and then produce them on the equipment. Generally, the knurled lines in this way are straight lines. The other is to use smooth copper materials to directly tap and Emboss during the production process. This processing method can produce some knurled copper nuts of non-standard sizes. The embossed shapes of embedded copper nuts can be selected by users, such as reticulated Various knurled lines such as figure eight embossing and herringbone embossing.

Alias and purpose

Copper nut, also known as embedded nut and inlaid copper nut or plastic embedded nut, can be divided into hot-melt copper nut, hot pressed copper nut, embedded copper nut and ultrasonic copper nut according to different use methods.

The product is widely used as an internal thread in the embedded parts of mobile phone shell / pen meter shell / injection molded parts / plastic parts General cylindrical embossing To prevent slipping.

Stainless steel nut

Hexagon nut (gb6170/din934), thin nut (gb6172/din439), heavy nut (metric, American system), nylon lock nut (din985-din982 thick), all metal lock nut (din980m), cap nut (din1587), flange nut (gb6177/din6923), French nut nylon lock nut (din6926), four corner welding nut (din928), hexagon welding nut (DIN929), butterfly cap (gb62, DIN315, American system) K cap, etc.

Alloy steel nut

Hexagon nut (gb6170/din934, gb6175), flange nut (gb6177/din6923)

Round nut (gb812), small round nut (gb810), American square nut, American hexagon nut (ansi/asme b18.2.2), heavy nut (metric, American). Specification: 5/16-4 ".

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