General technical information



 Standardisation

ISO, ANSI and DIN comparison of bolts, screws and nuts
Comparison of hexagon head bolts and screws
Comparison of hexagon nuts
Comparison of hexagon socket head cap screws

ISO tolerances for metric thread
ISO standard tolerances
 ISO tolerances for external thread
ISO tolerances for internal thread


Mechanical and chemical properties

Steel bolts, screws and nuts
Mechanical properties of steel bolts
Mechanical properties of steel nuts
Mechanical properties of steel bolts at elevated temperatures
Pre-load and torque figures for steel bolts with coarse thread
Pre-load and torque figures for steel bolts with fine thread

Specifications for set screws
Chemical composition of set screws
Mechanical properties of set screws
Torque requirements of set screws

Stainless steel
Designation system for stainless steel
Chemical composition stainless steel
Mechanical properties - Austenitic grades
Tightening torques and loads
Comparative international stainless steel grades
Chemical resistance for screws in A2 and A4

Non ferrous
Mechanical properties of non ferrous metals

Polymers
Physical properties of polymers
Chemical resistance of polymers
Breaking load and tightening torque of polyamide 6-6 bolts


Thread

Limits of sizes for metric thread
Limits of sizes for metric coarse thread
Limits of sizes for metric fine thread

Thread identification charts
Thread identification chart (Metric)
Thread identification chart (American Standard)
Thread identification chart (British Standard)

Recommended tapping drill size
Recommended tapping drill size for ISO metric coarse thread
Recommended tapping drill size for ISO metric fine thread
Recommended tapping drill size for UNC thread
Recommended tapping drill size for UNF thread

Miscellaneous

Conversion table: inches to millimeters
Washers by ID, OD and thickness

 

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