Wholesale 410 stainless steel flat head cross recessed countersunk head drill tail screw self-tapping self-drilling dovetail screw 1/2-13

We have more than ten years of production experience in the screw industry, the main products are: nylon external screws, big cap nail plate advertising display frame buckle rivets, elastic pads, UNC countersunk head socket head bolts, pin positioning pins, DIN125 flat washer nuts, flat Standard size table of gaskets, die gaskets, carbon steel white zinc American K cap nuts, multi-wave gaskets, BS2696 bolts, half-tooth outside angle bolts, high-precision knurled nuts, 8-level enlarged flat washers, flower-shaped studs with pins Fasteners such as cored bolts have different prices due to different product materials and specifications. Please contact us if necessary.

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Product introduction

Screw Specifications

Screw head table

screw generally includes a screw head, a screw part and a screw tail. In the traditional screw processing, the screw head and the screw part are punched out first, and then the threaded part is processed on the screw shank through the turning process. When the screw head is traditionally punched, the screw head is easily damaged due to the large punching force.

Wholesale 410 Stainless Steel

The core rivet is a new type of riveting fastener that is very convenient for riveting. It can show its unique advantages in a relatively small space or in an environment where there is no rivet gun or a rivet gun cannot be used. Two or more connected parts can be riveted successfully by hitting the mandrel on one side with a hammer or other utensils. Core rivets can be divided into oblate head core rivets and countersunk head core rivets according to the shape of the brim of the nail cap. According to different material combinations, they can be divided into all aluminum core rivets, aluminum steel core rivets, and all stainless steel core rivets. Rivets, steel rivets, aluminum stainless steel rivets, plastic rivets, etc. Core rivets do not have to be riveted with manual riveting guns or pneumatic riveting guns like blind rivets. They have better riveting and convenience, and can be widely used in the riveting of various connected parts.

Flat cross groove

Countersunk head drill screw

Most of the electroplating used for rivet nuts on the market is environmental protection blue zinc, because the salt spray test time of environmental protection blue zinc can reach 72 hours, that is, three days. This kind of electroplating has a longer salt spray resistance time. In fact, for example, for electroplating white nickel, the salt spray time of white nickel is relatively short, and it usually rusts in a few hours, which is less than 10 hours. However, some can be oiled for electroplating white nickel, and the salt spray time of the rivet nut after oiling can be longer. S series rivet nuts are made of free-cutting iron, which is treated after heat treatment. CLS series rivet nuts are made of easy-to-cut stainless steel. The hardness of low-carbon steel plates without surface treatment must be less than 70RB, and the hardness of stainless steel plates must be less than 80RB.

Self-tapping self-drilling dovetail screws

The traditional dismantling of automobile girder rivets is mostly carried out manually, which has many defects such as long disassembly time, low disassembly efficiency, labor-intensive, time-consuming, labor-intensive, low operation safety, difficult protection, and easy injury.


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