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
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Review summary
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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
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
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
- #2 of 4 best companies in Fastener Supplier
- #3 of 6 best companies in Hardware Accessories Store
- #8 of 18 best companies in Hardware Store
- #7 of 24 best companies in 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
8124 Opportunity Drive, 32583, Milton, United States
- (850) 764-2658
- Info@MonsterBolts.com
- monsterbolts.com
4.6
Excellent
1K reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 20% of negative reviews
Typically replies within 24 hours
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was a great experience ordering from…
was a great experience ordering from this company, had what i was looking for and couldnt find near me. will be buying from here again.
October 11, 2025
Bolts is a great choice
I rarely write reviews, but I felt compelled to share how impressed I am by Monster Bolts. From the moment I placed my order, everything felt smooth and effortless — the website was easy to navigate, and I found exactly the fasteners I needed (which were frustratingly hard to locate elsewhere).
The package arrived faster than I expected, beautifully organized, with clear labels and zero surprises. The quality of the bolts is really top-notch: solid material, accurate dimensions, exactly as described. I felt confident using them right away.
What also stood out was the customer support: I had a quick question about a part, and the reply was kind, knowledgeable and super prompt. It made me feel valued (yes, I notice those things!).
All in all — if you’re hunting for reliable, high-quality hardware — Monster Bolts is a great choice. I absolutely plan to order from them again. Highly recommended!
October 23, 2025
Unprompted review
Reply from Monster Bolts, Inc.
Hi Mary!
Wow — thank you for the amazing review! We’re so glad you found exactly what you needed and that everything arrived quickly and ready for use. We take pride in our quality and service, so hearing that you felt supported along the way absolutely makes our day.
We’re grateful to have you as part of the Monster Bolts community and can’t wait to help on the next project you tackle!
Quick shipping and exactly what I needed
October 23, 2025
Great product and fast shipping
October 22, 2025
Well made features
I bought these fasteners in hopes the hex drive would be able to handle more torque than what I was replacing these with. 1000 times better than what I had. I was able to put the torque I wanted on them and had no fear of stripping the drive
October 21, 2025
Excellent merchant
Quick shipping. Good price, same quality as the local hardware store for way less and they had the exact items I needed that the local hardware store did not have. Will use monster bolts for all my hardware needs
October 9, 2025
Pleasure Doing Business
Always a great experience ordering from MonsterBolts. They have what I need!
October 20, 2025
Fast delivery!
October 20, 2025
Slot cars
I build slot cars need to find a supplier to get different amounts and sizes
October 20, 2025
Fast turnaround
Fast turnaround. Quality hardware. Availability.
Legible and clear packaging labels.
October 19, 2025
had hard to find items at a great price.
October 17, 2025
Shipping time is terrible
Shipping time is terrible. After two weeks I still haven't received my order.
October 6, 2025
My order was delivered fast and…
My order was delivered fast and accurate. You had the items I needed when Amazon didn't.
October 13, 2025
Monster bolts provides access to hard to find fasteners.
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
October 14, 2025
Good Pricing for what I required
September 30, 2025
Monster Bolts is my go to source
Monster Bolts is my go to source for all fasteners. They have what I need and in stock every time.
October 11, 2025
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