38mm Engraved logo zinc alloy snap hook

Durable Engraved logo zinc alloy snap hook for handbags and shoulder bags,available in gold, silver, gunmetal,brushed gold and custom color according to your requirement ,The engraved logo hook not only meets the matching requirements of the bag but also enhances the brand’s recognition

Product Introduction

Item	FOM Snap Hook	Size	38mm
Brand	FOM	Model Number	OYC0760
Quality	High level	Feature	Nickel Free
Color	light gold	Samples	Availble

Why did the 38mm Engraved logo snap hook choose square tail instead of round tail?

The 38mm dog buckle itself is a relatively large dog buckle, suitable for hiking bags, business bags and large travel bags. It can withstand greater tensile force and gravity. The square tail plane has a larger contact area with the webbing and bag strap, which can disperse the tensile force and gravity and extend the service life. If a round tail is made, the tensile force and the focus will be concentrated on one point, and the tail connection is more likely to break

The two corners of the square tail have a limiting function, which can be more closely and stably attached to the webbing and strap. Moreover, the tail will not rotate back during use but can only remain a fixed square parallel to the webbing. In contrast, the round tail can rotate freely at 360 degrees, causing the webbing to twist together

A square tail provides a flat surface, allowing for clear and precise engraving and patterns. In contrast, a round tail can only be engraved on an arc-shaped surface, which not only poses a high technical difficulty but also makes the logo and patterns prone to deformity

square tail of snap hook	round tail of snap hook

A square tail gives people a sense of professionalism, stability and minimalist style, and is more suitable for outdoor backpacks, business bags, etc. While a round tail represents softness, versatility and casualness, and is more suitable for women’s bags, casual bags, etc

For a snap hook with a 38mm tail, the requirements for weighing and tensile force are higher than those of ordinary snap hook. Therefore, the requirements for springs and pins will be comprehensively strengthened. It is absolutely not allowed to directly proportionally expand the structure of ordinary small-sized dog clasp

Spring

The spring determines the opening and closing feel of the dog leash and its service life

• Material: Springs made of high-carbon steel or stainless steel should be used, which have fatigue resistance and high elasticity, ensuring that they will not deform and lose elasticity during long-term daily use
• Wire diameter: The wire diameter of the spring’s steel wire must be thickened so that the rebound force will be greater
• Coil: It is necessary to increase the number of coil turns to provide elastic force while increasing the compression stroke

Pin

The pin is not only an important component for assembling the head of the dog buckle, but also a key component that withstands all tensile forces

• Material: Stainless steel or high-strength alloy steel must be used to reduce the risk of breakage or bending
• Diameter: The diameter of the pin needs to match the size of the 38mm dog buckle. A small pin is a fatal weakness on a large buckle body.
• Installation method: Choose the whole pin through type, which can prevent loosening or falling off during long-term use

Performance comparison of springs made of different materials

Materials and Craftsmanship	Features	Elasticity and Durability Performance
Stainless Steel Spring	Excellent corrosion resistance and moderate fatigue life	Stable elasticity, long service life
High-Carbon Steel Springs (Heat Treatment)	Exceptionally high fatigue strength and elastic limit.	Offers superior elasticity and an exceptionally long service life.
Ordinary steel wire spring	Low cost, average performance, prone to fatigue.	Weak elasticity may deteriorate after several thousand uses, causing the dog clip to close improperly.

Performance comparison of pin made of different materials

Material	Features	Shear Strength Estimation
stainless steel	High strength, corrosion-resistant, wear-resistant.	≥ 500 MPa
High-carbon steel	High hardness and good strength, but prone to rust.	≥ 400 MPa
Brass	Corrosion-resistant, easy to process, but low in strength.	≈ 250 MPa
Zinc alloy	Die-cast molding results in high brittleness and poor shear resistance.	≈ 200 MPa

Dog buckles of different sizes require precise matching of pin and spring specifications and materials based on their structural strength, application scenarios, and operational requirements to ensure connection reliability, smooth operation, and service life.