Monster Bolts, Inc. (monsterbolts.com) has a 4.5 out of 5 rating on OK.one, based on 64 user reviews collected here. It is listed under Construction & Manufacturing and its reputation is excellent. 87% of reviews are 4 stars or higher and 9% are 1 star; The business has replied to 14% of negative reviews. Last updated 2026-08-10.
I found monster bolts two years ago. Excellent assortment of standard and metric screws and bolts in many of the common thread sizes used in present day firearms and accessories. Allows me to provide these items for repair or purchase at an excellent price point.
Fast shipping, and AMAZING packaging. Haven't used my bolts yet, but they look great, adn I love the re-usable bags for each item.
Monster bolts provides access to hard to find quality fasteners. The site flowed well to locate what I was looking for. Today the stainless steel versions are abundant however the specialized black oxide material product with the specific length and size for the small set screws that I required are not widely available as they once were for fastening securely and allowing to make adjustments. Monster Bolts made that choice very easy by offering them. The experience from locating them and purchase and fast shipping exceeded any expectations that I had. I definitely will revisit their site for their solution for any future build. 5 Stars
I emailed Monster bolts asking for dimensions for flange nuts which did not have a diagram in their listing. Jeff sent me the manufacturers Mill Test Report (thank you Jeff). The response was quick, polite and very helpful.
64 reviews matching