Yes, you can get M7 bolts, though they are considered an unusual thread size not commonly found in standard hardware selections. While not typically available off-the-shelf, specialized fastener suppliers do stock them, particularly for applications involving spare parts or specific machinery.
Understanding M7 Bolts
M7 refers to a metric bolt with a nominal diameter of 7 millimeters. In the world of fasteners, metric threads follow a standardized system (like ISO metric screw threads), but not all sizes are equally common.
Why M7 is an Uncommon Size
Most standard metric bolt sizes increment by even numbers or follow a specific series, often skipping 7mm. For example, it's far more common to find M6 (6mm) and M8 (8mm) bolts readily available. This makes M7 an unusual thread size, meaning it's not a go-to for general construction or everyday repairs. Its primary use often lies in original equipment manufacturing (OEM) where a specific design might necessitate this particular diameter, or as a replacement part for existing equipment.
Sourcing M7 Bolts: Where to Look
Given their uncommon nature, M7 bolts are generally not available off-the-shelf at typical hardware stores. However, this does not mean they are impossible to find.
To acquire M7 bolts, you should focus on specialized fastener distributors or suppliers who cater to industrial needs or niche markets. These suppliers often maintain a wider inventory of less common sizes to support various manufacturing and repair requirements.
- Online Fastener Stores: Many specialized fastener suppliers have comprehensive online catalogs, making it easier to search for specific, less common sizes like M7.
- Industrial Suppliers: Companies that supply parts to manufacturing plants or repair shops are more likely to stock a broader range of fasteners.
- Spare Parts Dealers: If you need an M7 bolt for a specific piece of equipment, checking with the original equipment manufacturer's spare parts division is often a reliable method.
Types of M7 Fasteners You Might Find
Despite their rarity, when sourced from specialized suppliers, M7 fasteners can be found in common configurations. These often include:
- Hex Head Bolts: These are among the most prevalent types, featuring a hexagonal head designed for tightening with a wrench. They come in various lengths to suit different applications.
- Hex Head Set Screws: Similar to bolts but typically threaded along their entire length, set screws are used for fastening objects together without a nut, often by screwing into a tapped hole.
Common vs. Uncommon Metric Bolt Sizes
The following table illustrates the typical availability difference between common and uncommon metric bolt sizes:
| Thread Size | Nominal Diameter (mm) | Common Availability | Typical Usage |
|---|---|---|---|
| M5 | 5 | High | Small electronics, light assemblies |
| M6 | 6 | High | General machinery, automotive |
| M7 | 7 | Low (Specialized) | Specific spare parts, custom applications |
| M8 | 8 | High | Medium-duty machinery, construction |
| M10 | 10 | High | Heavy-duty machinery, structural |
For more information on standard metric threads, you can refer to resources like Metric Fastener Standards.
In summary, while you won't typically grab an M7 bolt off the shelf, they are certainly available from specialized vendors who maintain a diverse inventory of metric fasteners.
