Hexagonal wood screws are specialized fasteners used for fastening wooden components. The following describes them from the dimensions of core structure, performance characteristics, application scenarios, and usage standards:
1, Core structural features
1. Head design
Adopting an exposed hexagonal column structure, torque transmission can be achieved through ordinary wrenches or socket tools, and its hexagonal head can provide a larger contact area, enhancing the precision of pre tightening force control.
2. Thread configuration
Equipped with self tapping threads designed specifically for wooden materials, the tooth angle is usually 60 °, and the tooth pitch is matched according to the diameter specification (such as M6 thread tooth pitch of 1.0mm), ensuring that the wood fibers are effectively compressed without splitting when screwed in.
2, Performance parameters and materials
1. Material standards
The main material is carbon steel grade 4.8, with some scenes using 304 stainless steel. Surface treatment includes galvanizing (salt spray test ≥ 48h) and Dacromet process (neutral salt spray ≥ 720h) to meet different corrosion resistance requirements.
2. Mechanical properties
Tensile strength ≥ 400MPa, yield strength ≥ 240MPa, shear strength tested according to JIS B 1082 standard, and single nail shear strength up to 1.2kN (M6 × 60 specification).
3, Typical application scenarios
1. Furniture manufacturing
Used for reinforcing the mortise and tenon structure of solid wood furniture, such as the connection between table and chair legs and crossbeams. The single nail bearing capacity can meet the vibration requirements for daily use.
2. Architectural decoration
Fixed keels and walls in wooden houses, used in conjunction with moisture-proof gaskets, can adapt to temperature changes ranging from -20 ºC to 60 ºC.
3. Shipbuilding industry
Used for the transition connection between wooden decks and metal components, its 304 stainless steel material can resist seawater salt spray corrosion.
4, Usage standards and advantages
1. Operating standards
Use a screwdriver that matches the specifications (such as M6 corresponding to PZ2 type screwdriver head), with a screwing speed controlled at 150-200rpm and a recommended torque value of 2.5-3.0N · m to avoid thread disengagement.
2. Technical advantages
Seismic performance: According to JIS B 1055 vibration test, it can maintain 2 million cycles without loosening under 10Hz and 3mm amplitude conditions
• Detachability: Supports repeated disassembly and assembly for more than 3 times, and the thread can still maintain a bite force of over 85%
Environmental characteristics: RoHS certified, lead content<100ppm
5, Selection and taboos
1. Selection principles
Select based on substrate hardness:
Pine/Cedar: M5 × 40 specification
• Oak/Walnut: M6 × 60 specification
• Plywood/MDF: to be used in conjunction with nylon expansion tubing
2. Disable Scene
It is prohibited to use thin wood boards with thickness less than 15mm. The use of gypsum board, hard foam board and other non wood substrates will easily lead to connection failure.
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