Comprehensive database of bolt and screw specifications including thread sizes, materials, torque values, breaking strength, and clearance holes for imperial and metric fasteners.
Imperial (UNC, UNF) and Metric (M3-M42) thread specifications with pitch, major diameter, and minor diameter data.
Recommended torque values for different grades and materials. Includes dry and lubricated torque specs.
Tensile strength and proof load specifications by grade (SAE J429, ISO 898-1). Breaking strength calculations.
Standard, close, and loose fit clearance hole sizes. Tap drill sizes for threaded holes.
Steel, stainless steel, aluminum, brass, and specialty alloys. Corrosion resistance and application notes.
Socket head, button head, flat head, pan head, and more. Drive types including hex, Torx, and Phillips.