Cap nut
Cap nut (also known as cap nut, cap nut) is a hexagonal nut with a closed top. The closed top can block the exposed thread of the bolt to prevent dust and rust. The appearance is neat and smooth, which improves the aesthetics of the assembly. It does not require additional decorative parts and simplifies the protection process. The hexagonal body is easy to operate with a wrench and is easy to disassemble and assemble.
Executive standards: GB/T 802, ISO 1580, DIN 1587, DIN 1588, ANSI/ASME B18.16.4
Material: carbon steel, stainless steel, alloy steel
Performance level: Level 4, Level 5, Level 8, SAE J995
Surface treatment: galvanized, blackened, chrome plated, polished
Specifications: M4-M24, #6-32 to 1/2"-13
Main uses
Decoration and civil scenes: used for furniture assembly, For door and window hardware, guardrail handrails, and exhibition props, the closed top hides the bolt ends to improve the clean appearance. The stainless steel polished version is suitable for high-end decoration needs.
Machinery and equipment manufacturing: used to protect the exposed bolt ends of equipment (such as motor shaft ends, machine tool casings) to prevent dust. It prevents dust and oil from entering the threads, extending the service life of fasteners, and is suitable for equipment that requires regular maintenance.
Automotive and home appliance industries: used in automotive interior parts and home appliance casings (such as washing machines and refrigerators) to hide exposed bolts, improve the aesthetics of the product, and protect users from being damaged. Scratches from sharp threads.
Outdoor and special scenes: Stainless steel (304/316) models are used for outdoor fences and garden facilities to prevent rain and corrosion; ordinary carbon steel models are used for indoor equipment, taking into account protection and cost control.




















法兰螺母
六角螺母
六角套筒螺栓/内六角螺栓
开槽圆螺母
六角法兰面螺栓







