APPLICATION DATA: RECOMMENDED SEATING TORQUE PLAIN FINISHMETRIC SOCKET HEAD CAP SCREWS

Class 12.9 Coarse Thread

All dimensions in millimeters Sizes in ( ) brackets not preferred for new designs Torque calculated in accordance with VDI 2230, Systematic Calculation of High Duty Bolted Joints, to induce approximately 800

MPa stress in screws. Torque values listed are for plain screws

NOTE: The proper tightening of threaded fasteners can have a high significant effect on their performance. Many application problems such as self-loosening and fatigue can be minimized by adequate tightening. The recommended seating torques listed in the catalog tables serve as guides only.

Even when using the recommended seating torques, the induced loads obtained may vary as much as +/- 25% depending upon the uncontrolled variables such as mating material, lubrication, surface finish, hardness, bolt/joint compliance, etc.

Diameter M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10 M12 (M14) M16 M20 M24 M30 M36 M42 M48

Torque-Newton Meters 0.29 0.60 1.21 2.1 4.6 9.5 16 39 77 135 215 330 650 1100 2250 3850 6270 8560

Torque2.6

(lb-in)5.3

(lb-in)11

(lb-in)1.5

(lb-ft)3.4

(lb-ft)7

(lb-ft)12

(lb-ft)29

(lb-ft)57

(lb-ft)100(lb-ft)

159(lb-ft)

243(lb-ft)

479(lb-ft)

811(lb-ft)

1660(lb-ft)

2840(lb-ft)

4625(lb-ft)

6314(lb-ft)

Non-StockDiameters

Stock Diameters Non-Stock Diameters