Metalsuberg Nylon Lock Nut 5/8"-11
Product description
If you’re fastening a joint where resistance to loosening matters, a nylon-insert lock nut offers a different approach from a standard hex nut. This Metalsuberg nut is listed for a 5/8"-11 thread and has a carbon-steel body with a color-galvanized finish. The pack contains 10 nuts, which may suit a small repair or a project that needs matching fasteners. The key buying detail is fit: the thread size must match the bolt, and the product description doesn’t provide a load rating or a specific corrosion rating.
Best use cases
This is a general-purpose fastening component for securing threaded joints, and the listing says it can be used across different industries. A practical example would be fitting a nut to a compatible 5/8"-11 bolt when you want the nylon insert to help resist loosening. It’s a great fit if the thread specification matches your hardware and you need a 10-piece pack rather than a single replacement nut.
A regular nut may be enough for a straightforward fastening job where resistance to loosening isn’t a priority. This lock nut is aimed at a different need: its nylon insert is described as helping maintain clamping force and avoid loosening. What matters more for your project: that insert, or a documented load and environmental rating? The listing doesn’t answer the latter, so choose based on the requirements of the joint rather than assuming suitability for a demanding application.
Product specs
- Type: Nylon-insert hex lock nut
- Thread size: 5/8"-11
- Width: 0.94 inch
- Height: 0.755 inch
- Material: Low-carbon steel, according to the description
- Finish: Color galvanization
- Pack size: 10 pieces
- Grade: The product name identifies it as Grade 5
The product name calls out Grade 5, while the description names low-carbon steel as the material. Those details are presented as supplied, no further material or grade documentation is included here. The seller also states that the fasteners follow ANSI standards, but doesn’t identify a specific standard number. Match the stated thread and dimensions to the hardware you’re replacing, and don’t treat the finish alone as a guarantee of performance in a particular environment.
Where it shines
The useful part of this design is the combination of a hex shape for tightening and a nylon insert intended to help keep the nut from backing off. The galvanized exterior is described as a measure to help stave off rusting. Those features make the nut more targeted than a basic fastener when holding a joint secure is part of the job, while still leaving the application and conditions to determine whether it’s suitable.
One limitation: the listing gives no load capacity, service-life figure, or defined temperature range, so it can’t establish whether this nut meets a specific engineering requirement. It’s not for you if you need those documented ratings, or if your bolt doesn’t match the 5/8"-11 thread. Check the dimensions and working conditions against your installation before choosing it.
Final verdict
The Metalsuberg lock nut is worth considering for routine fastening when you need the listed 5/8"-11 size, want a nylon insert, and can use all or part of a 10-piece pack. Its finish and insert address rust resistance and loosening as described, but the available details don’t support a stronger claim about performance in harsh or precisely rated applications. For a simple replacement, the dimensions and thread give you practical criteria to confirm, for a critical joint, look for explicit load, material, and environmental specifications before relying on it.