Fastners
Fasteners
A fastener is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. Welding is an example of creating permanent joints. Steel fasteners are usually made of stainless steel, carbon steel, or alloy steel. Fasteners are used for fastening and securing materials such as wood, metal, plastic, or concrete.
Types of Fastners
| Grade/Class | Strength |
|---|---|
| Grade A Nuts | Strength exceeds Grade 2. |
| ASTM A325 | Bolts meet ASTM A325 Type 1 standards for structural steel joints. |
| Grade B Nuts | Strength is similar to Grade 5. |
| Grade B7 Threaded Stud & Rod | Same as Grade 5. Use with Grade 2H and Grade C nuts. |
| Grade C Nuts | Strength exceeds Grade 5. Use with heat-treated medium-strength steel fasteners like ASTM A325 structural bolts. |
| Grade G Nuts | Strength is similar to Grade 8. Use with ASTM A325 structural bolts. |
| Grade 2 | Low strength. |
| Grade 2H Nuts | Strength is similar to Grade 5. Use with ASTM A325 structural bolts. |
| Grade 5 Nuts | Medium strength. |