Snap hook is a common QQ, is composed of S-shaped spring combination, from top to bottom is divided into ABCD four parts: AB piece is called the female buckle, in the wide edge can carve a pattern, in the center of a hole, on both sides of two parallel spring; CD parts called the male button, in the center of a small dot protruding, the small dot pressed into the hole after the spring clamp, the formation of tension, the clothes fixed.
In terms of styles, snap hooks can be roughly divided into: big white buckle, fisheye buckle, blister buckle, plastic snap hook, plastic surface snap hook, snap hook with drill, etc.
According to the different buckle surfaces, snap hooks usually include: quad-hook, quad-hook, quad-hook with diamond, fisheye, etc.
According to the different materials, snap hook usually includes: quad-plate, resin quad-plate, plastic surface quad-plate and so on.
But unless otherwise specified, it is only called snap hook
The model of snap hook is determined according to the size of the following three parts, and the general model is 655,633,831.
The BCD three is often referred to as the "next three". The surface of the quadlock (piece A) can be changed at will, but the next three usually have their own rules in common.
The lower three of the model 655 can be matched with the face buckle below 10 mm;
Type 633 lower three can be matched with 11-15mm face buckle;
Model 831 lower three can be matched with 15 mm or larger face buckle;
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