4-40 Button Head Screws (25pcs) Reviews for the product - 4-40 Button Head Screws (25pcs) (Back to product)
2 Product Reviews - Average rating 4.5 / 5 (Best Rated | Worst Rated | Most Recent | Oldest)

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Head strips out easily

- 13th October 2019

These work fine unless you use loctite blue or above. They are low weight and high strength but a larger hex would improve these drastically. I have to use pliers to remove half of my bolts.

Hard to find screws

- 29th October 2013

It is difficult to find such high-quality 4-40 button head screws with hex heads. I am using these in combat robot for strength and also on autonomous robot because they are low-profile and look cool!

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