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close this bookThreaded Joints - Course: Techniques of fitting and assembling component parts to produce simple units. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 25 p.)
View the document(introduction...)
View the documentPreliminary Remarks
View the documentHints on Labour Safety
View the document1. Purpose of Threaded Joints
View the document2. Selected Types of Bolts and Screws
View the document3. Selected Types of Nuts
View the document4. Selected Types of Locking Devices for Bolts and Screws
View the document5. Selected Types of Washers
View the document6. Types of Threaded Joints
View the document7. Stresses in Threaded Joint
View the document8. Tools
View the document9. The Technological Steps of Making Threaded Joints
View the document10. Undoing Threaded Joints

Hints on Labour Safety

Generally, the precautions for safe boring, drilling, counterboring and thread cutting apply. The following points, however, should always be emphasized:

- All tools must be in good condition and used only for the purpose for which they were made.

- All workpieces must be securely held in position for drilling, boring or thread cutting. Excessive holding pressure may damage the work.

- Select tools of the right size for tightening or loosening bolts, nuts and screws. Tools of the wrong size tend to damage the workpiece and may slip off causing injuries.

- Make sure that large parts cannot drop to the ground when the bolts and nuts or screws are removed.

- It is regarded as good craftsmanship to store all tools properly and individual components always together with their counterparts.