Import 304/A2 Small Countersunk Head Insert Nuts — Buy in Bulk from Supplier in China

304/a2 small countersunk head insert nuts from Guangzhou Yinglai Hardware Product Co., Ltd. are threaded fasteners designed for installation in thin materials where a flush or below-surface finish is required. The small countersunk head sits recessively, minimising protrusion and reducing snagging risks in assembled components. These insert nuts are available in metric sizes M3 to M12 and UNC/UNF threads from 6-32 to 1/2-13, with A2 stainless steel as the primary material for corrosion resistance.

The supplier’s range includes carbon steel, aluminium and stainless steel options, with the small countersunk head available across all materials. A2 stainless steel typically delivers a yield strength of 205 MPa and an ultimate tensile strength of 500-700 MPa, with a standard elongation of 40-60% for ductility. The countersunk design is particularly suited for aerospace and precision engineering, where surface smoothness is critical. Industry standards for these inserts often reference NASM 21290 or ASME B18.24 for dimensional compliance.

These insert nuts are commonly used in sheet metal, composite panels and plastic assemblies, where blind-side threading is necessary. The small countersunk head is ideal for applications with limited clearance or where aesthetic considerations demand a seamless finish. Buyers should confirm the exact head diameter, countersink angle (typically 90° or 120°) and grip range to ensure compatibility with their materials and assembly tools.

Guangzhou Yinglai Hardware Product Co., Ltd. operates from Guangdong Province, with its facility located in Guangzhou, a key hub for hardware manufacturing in China. The company focuses on producing threaded inserts, including small countersunk head insert nuts, catering to industries such as aerospace, automotive and sheet metal fabrication. Its product line spans multiple materials and thread standards, ensuring versatility for diverse applications.

While the supplier’s profile does not specify certifications or production volumes, its location in Guangzhou suggests proximity to raw material suppliers and logistics networks. The company’s emphasis on threaded inserts indicates specialisation in this niche, which may benefit buyers seeking tailored solutions. To assess suitability, buyers should request samples, quality test reports and details on manufacturing processes, such as cold forming or machining, to ensure consistency.