Mushroom-head bolt with serrated flange nut Baks model 651341 M10×20 pack of 100

Mushroom-head bolt with serrated flange nut Baks model 651341 M10×20 pack of 100 is a set of fasteners designed for secure, low-profile connections in metal and wood assemblies. Each unit combines a rounded mushroom head bolt and a serrated flange nut that helps resist loosening under vibration and spreads clamping load across the mating surface. Supplied as a pack of 100 pieces, this fastening set is intended for repeated use in production, assembly and repair tasks where a neat, finished appearance and durable clamping are required.

Advantages

The mushroom-head design provides a smooth, rounded finish that reduces snagging and improves the visual appearance of installed fasteners. The serrated flange nut offers integrated locking action by biting into the mating surface to resist rotation without additional locking components. The M10×20 thread size balances strength and compactness for general fastening duties, while the matched bolt-and-nut set ensures consistent fit and reliable clamp force across multiple assemblies.

Suitable for

• Furniture assembly and fittings
• Sheet metal and panel fastening
• Mechanical assemblies and maintenance
• Wood joinery where a low-profile head is required
• Applications subject to moderate vibration or movement

Key specifications

• Head style: mushroom (rounded) head for low-profile finish
• Nut type: serrated flange nut providing locking action and load distribution
• Thread size and length: M10×20
• Pack contents: 100 matched bolt-and-nut sets
• Material and finish: suitable for standard mechanical fastening (refer to manufacturer for specific material/coating)

How to use

Position the mushroom-head bolt through the pre-drilled hole in the workpieces so the rounded head sits flush or slightly proud on the visible surface. Thread the serrated flange nut onto the bolt from the opposite side and hand-tighten to engage the serrations with the mating surface. Use an appropriate wrench or socket to tighten to the required torque for the application, taking care to avoid over-tightening which can damage threads or the clamped materials. Ensure proper alignment of parts before final tightening and inspect the serrated flange contact to confirm engagement.

Usage recommendations

For best performance, use with correctly sized pre-drilled holes and apply torque appropriate to M10 fasteners for the materials in use. In corrosive or outdoor environments, verify material and coating compatibility or select corrosion-resistant variants. Periodically inspect assemblies subjected to vibration to confirm locking effectiveness.