The best ball point set screw depends on the thread size, length, material, and spring force your application requires. For M4 x 6 mm, compare the uxcell and NACX stainless steel options; for M6, consider PATIKIL’s stainless steel screw or uxcell’s high-carbon steel version. If you need several sizes for general repairs, the 60-piece set offers a broader selection, but its listed features do not identify the screws as ball-point spring designs.
| Product | Best suited for | Key distinction |
|---|---|---|
| uxcell M4 x 6 mm, 20 pieces | Compact M4 applications | Stainless steel; stated stroke and elastic range |
| uxcell M6 x 12 mm, 10 pieces | Longer M6 installation | High-carbon steel; 8–35 N spring force |
| PATIKIL M6 x 10 mm, 20 pieces | M6 stainless steel use | Stated pitch and spring force |
| 60-piece metric set | Mixed-size repair work | 12 sizes; conventional set screws by listed description |
| NACX M4 x 6 mm, 20 pieces | Stainless M4 replacement | Lists thread pitch and material |
uxcell M4 x 6 mm Stainless Steel Ball Point Screws
This 20-piece pack is best for buyers who need compact M4 x 6 mm ball point set screws with a hex socket drive. The listed material is 304 stainless steel, and the 2 mm hex socket width identifies the required drive size.
Its stated elastic range is 3.0–15.0 N, and the ball plunger stroke is 0.8 mm. Those specifications help buyers compare spring response and movement against their application requirements. Choose this option if its M4 dimensions and stated stroke match your installation.
Limitation: The listed spring range is lower than the 8–35 N range specified for the M6 options, so check the required force before choosing it.
uxcell M6 x 12 mm High-Carbon Steel Screws
This 10-piece pack is best for an M6 application that calls for a 12 mm screw and a listed spring force of 8–35 N. The product description identifies high-carbon steel and describes the screw as a compact, concealed-installation ball point set screw with a hexagon socket drive.
The stated ball plunger stroke is 1.3 mm. Choose it over the shorter M6 option when 12 mm is the required thread length. The listing says the assembly uses a spring, ball plunger, and shell, and is intended for mechanical equipment that does not require a protruding end.
Limitation: This is high-carbon steel rather than the 304 stainless steel specified for other options. Check material requirements, particularly where rust or corrosion resistance matters.
PATIKIL M6 x 10 mm Stainless Steel Screws
This 20-piece pack is best for buyers who need M6 x 10 mm ball point set screws made from 304 stainless steel. The listing specifies an M6 x 1 mm thread pitch, a 3 mm hex socket, and an 8–35 N spring force.
The spring-and-ball-head design is described as allowing fine adjustment and helping balance force when a load is uneven. Its stated total length is 11.3 mm, so check the dimensional details against your available installation space. Choose this product if the M6 x 10 mm size and stated spring force suit the job.
Limitation: The listed size differs from the M6 x 12 mm uxcell option. Do not assume the two are interchangeable; verify length and thread requirements first.
60-Piece Metric Set Screw Assortment
This assortment is best for DIYers and repair users who need several metric set screw sizes on hand. It includes 60 stainless steel screws across 12 listed sizes: M3, M4, M5, M6, and M8, with multiple lengths for some thread diameters.
The description identifies these as Allen-head or grub set screws for applications such as furniture, household repairs, machinery, and fixtures. It does not specify a spring-loaded ball point, so choose this kit for general set-screw needs rather than when a ball plunger is essential.
Limitation: The listing does not identify these as ball point screws or provide spring-force and plunger-stroke specifications.
NACX M4 x 6 mm 304 Stainless Steel Screws
This 20-piece pack is best for buyers replacing M4 x 6 mm ball point screws who want a listed thread pitch and 304 stainless steel material. The specifications state a 4 mm diameter, 6 mm thread length, and 0.7 mm pitch, with an inner hex drive.
The product description identifies the screws as spring ball point grub screws and describes the hex socket as providing even force. Choose NACX if those dimensions match your existing hardware and you want the material and pitch clearly stated.
Limitation: The supplied product details do not state spring force, plunger stroke, or hex socket width, making those specifications harder to compare with the uxcell M4 option.
Buying Guide: How To Choose Ball Point Set Screws
Which thread size and length do you need?
Match the screw’s diameter, thread pitch, and length to the threaded hole and the required installation depth. For example, the listed M4 options are 6 mm long, while the M6 choices are 10 mm or 12 mm. Do not choose by diameter alone: a different pitch or length can prevent proper fit or leave too little engagement.
Should you choose stainless or high-carbon steel?
Choose based on the material requirement for your application. The M4 uxcell and NACX products and the PATIKIL M6 product list 304 stainless steel. The M6 x 12 mm uxcell product lists high-carbon steel. The listings do not establish that one material is right for every environment, so consider exposure and equipment specifications.
How should you compare spring force and stroke?
Spring force and plunger stroke describe different characteristics. Force indicates the listed resistance range; stroke indicates the stated ball movement. Compare these values with the application’s requirements rather than assuming a higher force or longer stroke is automatically better. Some product listings do not provide both measurements.
What tools and quantity should you check?
Confirm the hex socket width so you can select a matching hex key. Also compare pack quantity with expected use: the listed ball point products come in 10- or 20-piece packs, while the assortment contains 60 screws across multiple sizes. Verify every size in an assortment before relying on it for a specific repair.
Frequently Asked Questions
What is a ball point set screw?
It is a set screw with a spring-loaded ball plunger at its end. The ball provides a movable contact point rather than the fixed end described for a conventional set screw.
Are ball point set screws the same as grub screws?
Ball point set screws may also be described as ball point grub screws. However, a product labeled only as a grub screw is not necessarily spring-loaded; check its features for a ball plunger and spring.
Can I replace an M4 screw with an M6 screw?
No. M4 and M6 identify different thread diameters. Match the replacement to the hole’s diameter, pitch, and required length.
Does stainless steel mean every screw is corrosion-proof?
No. The listed products identify stainless steel, and some descriptions state rust or corrosion resistance, but the supplied details do not establish suitability for every environment. Check your application’s material requirements.
Which listed option has a stated plunger stroke?
The uxcell M4 x 6 mm option lists a 0.8 mm stroke, and the uxcell M6 x 12 mm option lists a 1.3 mm stroke. The other supplied product details do not specify a stroke.