< > [Mechanisms](../../Mechanisms) > Fasteners
### Best sources for of these things:
- [McMaster](https://www.mcmaster.com/#screws/=1bs6vax)
- [SDP/SI](https://shop.sdp-si.com/catalog?brand=sdp)
#### Important considerations for all of these:
- [Shigley's Mechanical Engineering Design](https://drive.google.com/file/d/1iExt-zr-cOQ9H3zXTH-tmj2uSWbexye2/view?usp=sharing)
### Mechanical Fasteners
#### Types:
Screws, set screws, shoulder screws
- Attachment types:
- Nut
- Tapped hole
- Threaded insert
#### Alternatives:
Zip ties, [Snap Fits](http://fab.cba.mit.edu/classes/S62.12/people/vernelle.noel/Plastic_Snap_fit_design.pdf)
- Adhesives
- Glue/epoxy
- Tape/laminates
#### Main Concerns, Guiding Principles:
- Clamping force: tension/compression
- Shear
- Tear out (hole placement in material)
- Bending
- Vibration (Lock-nuts, thread-lock)
- Activation/installation energy v retaining force
#### Resources:
- [Elements of Mechanical Design](https://ocw.mit.edu/courses/mechanical-engineering/2-72-elements-of-mechanical-design-spring-2009/lecture-notes/MIT2_72s09_lec10.pdf)
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