500 Pcs 25 Size Set Screws Metric&SAE Set Screw Assortment Kit 12.9 Alloy Steel Head Socket Metric Set Screws for Bathroom…
Best for
Best set screw assortment
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Updated Jun 27, 2026 · 1 min read
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
This 500-piece set-screw assortment fills a specialty niche the broader kits don't, covering 25 sizes of alloy-steel grub screws in both metric (M3–M8) and SAE ranges, and it posts a strong 4.7 average across roughly 569 verified-purchase ratings. Reviewers single it out for jobs like securing door handles, bathroom fixtures, knobs, and pulleys where a standard bolt-and-nut kit is useless, and the 12.9-grade alloy hardware is noted as appropriately tough for set-screw duty. It is, by design, a single-purpose kit, so it won't serve as a general fastener assortment.
What reviewers liked
- Strong 4.7 average across ~569 verified-purchase ratings
- Covers a hard-to-find set-screw niche in both metric and SAE
- High 12.9-grade alloy steel appropriate for set-screw duty
Where it falls short
- Single-purpose kit; not a general fastener assortment
- Lower review volume than the category leaders
- No independent testing to confirm the hardness grade
Embed our score
Sell this product? Show off the rank.
Free badge for the brand, retailer, or anyone covering this product. Copy the snippet and paste it anywhere HTML works. Updates automatically when the ranking changes.
Includes a credit link back to this page. No tracking; no JavaScript.
This 500-piece set-screw assortment fills a specialty niche the broader kits don't, covering 25 sizes of alloy-steel grub screws in both metric (M3–M8) and SAE ranges, and it posts a strong 4.7 average across roughly 569 verified-purchase ratings. Reviewers single it out for jobs like securing door handles, bathroom fixtures, knobs, and pulleys where a standard bolt-and-nut kit is useless, and the 12.9-grade alloy hardware is noted as appropriately tough for set-screw duty.
It is, by design, a single-purpose kit, so it won't serve as a general fastener assortment. Review volume is moderate rather than large, and as with the rest of the pool, no independent testing or community discussion was available to verify the hardness rating. For anyone who repeatedly needs grub screws, customer consensus makes this the standout specialty pick.
- 25 Sizes Metric + SAE
- The set screw assortment kit contains the most commonly used sizes in daily repairs, SAE: 1/8-40*1/8, 1/8-40*5/32, 1/8-40*1/4, 1/ 8-40*5 /16, 5/32-32*3 /16, 5/32-32*1/4, 5/32-32*5/16, 3/16-24*3/16, 3/ 16-24*5/16, 1/4-20*1/4, 1/4-20*3/8, 5/16-18*5/16. Metric: M3 M4 M5 M6 M8. Also comes with 5 custom-sized hex keys and easy-to-take tweezers.
- Hex Socket Design
- The set screw are professionally cut and polished. They not only have a smooth surface and have a certain load-bearing capacity, but also have tight threads to increase torque. and can be used for long time.
- 12.9 Alloy Steel
- Set screws are made of durable 12.9 grade alloy steel and feature black zinc plating technology. They contain no organic oil but will not rust.
- Convenient Storage
- Each type of set screws are individually packed in a transparent bag marked with the size and placed in a storage box with partitions. There are labels inside and outside the box, and the size and quantity are clear, which can be easily taken and stored.
- Widely Used
- Hex socket set screws are used in a variety of scenarios, daily life: installing door handles, fixing pipes, repairing bathroom appliances; electronic equipment: cameras, sorting instruments, precision machinery, etc.(Not suitable for bicycles, motorcycles, or heavy industrial use.)
If the consensus convinced you
Check current price on Amazon
Pricing and availability change frequently. Tap through to confirm before buying.