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Length Threads with Stainless Steel Internal Construction Review

3

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Poor

Revainrating 3 out of 5  
Rating 
2.8
🔩 Screws, 🔩 Fasteners

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Description of Length Threads with Stainless Steel Internal Construction

Set Screws keep parts from turning relative to a shaft. Stainless Steel is suitable where formability and cost are important considerations. Do not have an external head. Drive system is a hexagon-shaped hole. Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads.

Reviews

Global ratings 3
  • 5
    1
  • 4
    1
  • 3
    0
  • 2
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  • 1
    1

Type of review

Revainrating 1 out of 5

Terrible quality screws for professionals

These screws may be affordable, but their quality is low. They don't hold up in industrial and scientific settings, and require constant re-tightening. The only positive to these screws is their stainless steel composition. Unfortunately, that doesn't make up for their overall lack of durability.

Pros
  • Stainless steel composition
Cons
  • Low quality, unreliable in professional settings

Revainrating 4 out of 5

Extra Small Set Screws

If you are looking for cheap 4 to 40 set screws (of this length), just buy them. When you consider how cheap they are, it makes sense. Of course, I really only needed 10 or so, but getting a bag of 100 (with Prime shipping) was a lot cheaper than trying to find them locally.

Pros
  • Fasteners
Cons
  • Unbelievable Price

Revainrating 5 out of 5

Ideal for AR-15/M-16 takedown detent spring. Holds in place.

Used to hold the rear detent on my modern sporting rifles. Deer hands fall. (AR-15 style semi-automatic rifle). Now I can remove and replace the buffer tube extension without worrying about the retainer and spring hitting my face. Great little "upgrade" if you want to call it that. You have to drill and tap! Vermont American 21660 Size 4 x 40 NC Tap #43 Combination Drill <-- Perfect! B000CFLA02

Pros
  • Industrial & Scientific
Cons
  • There are other interesting options.