木材用ファスナーの完全ガイド。木ねじ、コーachねじ、木質Connector、木质フレーム建築のための適切な選択について学びます。
Wood Screws: Selection and Use
Wood screws are designed for fastening wood to wood: Types: - Flat head: Countersinks for flush surface - Round head: Provides bearing surface - Bugle head: For drywall and sheathing Key Features: - Sharp point for easy starting - Coarse thread for wood gripping - Smooth shank for easy insertion - Various lengths and gauges Selection Tips: - Length: 2.5x thickness of top board - Gauge: Match to load requirements - Head: Match to application - Coating: Exterior use requires corrosion resistance
Coach Screws (Lag Screws)
Coach screws (lag screws) are heavy-duty wood fasteners: DIN 571 / ISO 8678: Hex head wood screws Features: - Hex head for wrench tightening - Coarse, sharp threads - Full thread or partial thread - Heavy-gauge construction Applications: - Timber frame connections - Deck construction - Pergola and gazebo building - Furniture assembly Installation: - Pre-drill pilot hole (especially for hard woods) - Use washer under head - Drive with wrench or impact driver TradeGo coach screws are hot-dip galvanized for exterior use.
Timber Connectors
Metal connectors improve timber connection strength: Types: - Joist hangers: Support joists at beams - Strap ties: Reinforce joints - Post bases: Secure posts to concrete - Holdowns: Resist uplift forces Materials: - Galvanized steel: Standard interior - Hot-dip galvanized: Exterior/damp locations - Stainless steel: Marine/coastal Benefits: - Increased load capacity - Reduced notching of timber - Standardized connection details - Faster installation