2. Fasteners 6831.21

3. Nails Metal fasteners driven into the material it holds

4. Nails Common nails are used for general construction and have a flat head and diamond shaped point

5. Common Nails Used for construction such as framing because of their heads and size of shank

6. Nails Finishing nails have small heads that can be set below surface

7. Finishing Nails Used for trim because of small heads that can be countersunk below surface of wood

9. Nails Brads are thin, short nails with small heads

10. Nails Cut or casing nails are square on the ends and are used for tongue an groove board nailing

11. Casing Nails Used to fasten tongue and groove boards and to nail some trim work

12. Nails Others: roofing, box, staple, duplex

13. Spiral Groove Nails Used to fasten metal on roofs because the nails are less likely to work loose and cause leaks

15. Screws Fasteners with threads that bite into the material they fasten

16. Screws Kind based on material they hold – wood, sheet metal, drywall, etc.

17. Screws Kind based on metal they are made from – steel, brass, etc.

18. Screws Kind based on shape of head – flat, round, oval, pan, etc.

19. Flathead and Roundhead Screws Used to fasten wood to wood

20. Countersink A countersink cuts a “V” in the surface of wood so that a flathead screw will be flush or just below surface

22. Countersink Roundhead screws will be above surface unless a hole is drilled deep enough to hide head of screw

23. Screws Size is determined by diameter (gauge) and length (inches) of the shank

24. Bolts Fasteners that require a threaded nut

25. Bolts A lag bolt is sometimes called a lag screw because it has threads similar to a wood screw and does NOT use a nut

26. Lag Screws Are used with expansion shields to fasten wood to masonry materials such as concrete, bricks, or blocks

28. Bolts A carriage bolt has a round head over a square shank or shoulders

29. Carriage Bolt

30. Bolts A stove bolt may have either a round head or a flat head and the shank is threaded the entire length from bottom to top

31. Stove Bolt

32. Stove Bolts Are used to fasten lightweight metal structures

33. Bolts A machine bolt has either a square head or a hex head and is threaded on the bottom for about 1” It is NOT threaded all the way to the top

36. Machine Bolts Are used when a strong bolt is needed, but it needs to be removed to dismantle metal equipment on a regular basis

37. Bolts A cap screw is much like a machine bolt but has threads the entire length, is usually 2” or less in length, threads into something other than a nut, and may have different kind of head

38. Fasteners 6831.21