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Monster Bolts, Inc. Reviews 1,029

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TrustScore 4.5 out of 5

4.7

Fastener Supplier
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Review summary

Created with AI, based on recent reviews

Considering 138 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the high quality of the products, often highlighting that items are exactly as described and made from solid materials, making them a reliable choice for various needs. Many appreciate the excellent assortment, including hard-to-find fasteners, and the competitive pricing, which is often significantly better than local hardware stores. The ordering process is frequently described as smooth and effortless, with fast shipping and well-packaged items that arrive quickly and as promised. However, some people experienced issues with delivery times, noting that orders took longer than expected or were not received at all, with some attributing these delays to the shipping carrier. A few customers also received incorrect items or found that the product specifications, such as thread type or size, did not match their expectations, leading to unusable parts.

What people talk about most

Product

Reviewers mention positive feedback about product, often highlighting the high quality, accuracy, and... See more

Delivery service

Users describe positive interactions with delivery service, frequently praising quick and fast shipping, with... See more

Order

Consumers find the ordering process to be a positive experience, often highlighting the speed of order... See more

Price

Customers consistently note positive experiences with price, often highlighting great and reasonable prices... See more

Quality

Customers had positive experiences with quality, consistently praising the high quality of products, with... See more

Reviews shaping this summary

Rated 5 out of 5 stars

This was an excellent package of hardware. When I purchase fasteners I usually buy more than I need so my supplies look more like an aisle in a well stocked hardware store. What made this purchase g... See more

Rated 5 out of 5 stars

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 provi... See more

Rated 5 out of 5 stars

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 bl... See more

Rated 5 out of 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, p... See more

Company details

  1. Fastener Supplier
  2. Hardware Accessories Store
  3. Hardware Store
  4. Tool Store

Written by the company

MonsterBolts is your top choice for both metric nuts and US sizing. Shop now for a great selection of nuts and washers, screws (socket, machine and Teks), bolts, Concrete Anchors, Type 17 Deck wood screws, sealed electrical connectors and fasteners onl...

Contact info

4.7

Excellent

TrustScore 4.5 out of 5

1K reviews

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Asks customers to review

This company invites their customers to review, whether positive or negative

Replied to 22% of negative reviews

Typically replies within 24 hours

How this company uses Trustpilot

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Rated 1 out of 5 stars

I ordered what were depicted as full…

I ordered what were depicted as full thread bolts. What arrived after an extended shipping time is about 25mm unthreaded shaft and 20mm threaded.

I am out of time and can't wait for a replacement of it even exists.

I will never order from monster bolts again since I can't trust that I will receive what I ordered.

Very unhappy!!

March 25, 2026
Rated 5 out of 5 stars

Metric hardware

Just what was ordered, delivered expeditiously. Great online source for needed hardware. Saves me from having to search in local stores. Everything as described.

March 26, 2026
Rated 3 out of 5 stars

Not quite

I bought 4 sets of varying hex screws for 1) the bridge of my new Fender Telecaster Ultra II Liquid Gold and 2) for the bridge of my Vega Trem V1.

The set of black hexes for the Tele were either not the right diameter or thread-not sure which. I only tried two. The first one I had to struggle getting it in and the second got caught about halfway down and broke the .050" hex tool I bought break off! I got the piece out with a micro vise and decided to just grind off the hex screws that came with that American Tele to my preferred length and they went right in.

The other set for the Vega Trem fit perfectly and went in smoothly. Glad to have those :)

March 25, 2026
Rated 5 out of 5 stars

Finally

Finally, I have found a place to get quality SAE products at a good price. I look forward to seeing if the metric products are as good.

February 22, 2026
Monster Bolts, Inc. logo

Reply from Monster Bolts, Inc.

They are indeed! Thank you Howard for the great review. Appreciate going the extra effort to share this. Thank you again. Jeff - Owner, Monster Bolts.

Rated 1 out of 5 stars

Been over a week and still no product

Been over a week and still no product
If you cannot ship out 1 package of 50 inserts and get to customer in less than a week you have a problem.
Sending email requesting feedback on a product that still has not yet been received questions your company's service

February 22, 2026
Rated 5 out of 5 stars

Fabulous keep it up

What a great system even though one order was very small. They still treated it as if it were a large sale and delivered at Time thank you so much

December 25, 2025
Rated 4 out of 5 stars

Disappointed with black oxide

Exact item ordered was promptly received. However, I was disappointed to discover that the black oxide bolts will rust during outdoor, dry exposure (inside a porch light fixture never wet). Had to replace with stainless steel bolts not sold by Monster Bolt in my size.

December 26, 2025
Rated 5 out of 5 stars

Good quality

Good quality, exactly as advertised. Good price. Quick delivery.

I have already placed another order (needed additional/longer fasteners).

December 28, 2025

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