How to Choose the Right Fasteners?

Fasteners are the core of connection components, including bolts, screws, and nuts. Proper selection directly affects product assembly efficiency and reliability.

Fastener Type Selection

Bolts

Bolts are one of the most common fasteners. Hex bolts are most versatile, flange bolts suit applications requiring locking, and socket head bolts fit space-limited situations.

Consider strength grade, head shape, and thread specification when selecting.

Screws

Screws typically do not require nuts and directly engage with the workpiece. Machine screws need matching nuts or threaded holes, self-tapping screws can directly tap into thin sheets.

Nuts

Nuts work with bolts or screws. Hex nuts are most versatile, flange nuts suit locking applications.

Standard Selection

Different countries and regions have different fastener standards, such as ISO (International), DIN (Europe), JIS (Japan), and ANSI (USA).

Lingyufab can produce fasteners meeting JIS, DIN, ISO, ANSI, and other standards.

Material and Surface Treatment

Common materials include carbon steel and stainless steel. Carbon steel has high strength but requires surface treatment; stainless steel has better corrosion resistance.

Surface treatment methods include zinc plating for general rust prevention and nickel-chromium for electronic product decoration and corrosion resistance.

Key Parameters

When selecting, determine:

• Thread specification (M3, M4, M5, M6, M8, etc.)

• Length

• Strength grade

• Material

• Surface treatment

Fastener selection should consider material, assembly method, usage environment, and maintenance needs.

OEM and Manufacturing Scenarios

In OEM and manufacturing projects, fastener selection directly affects assembly efficiency and costs.

Lingyufab provides fastener production, sheet metal fabrication, surface treatment, and assembly services, supporting various specifications and standards with integrated processing and assembly support. Contact us for inquiries.