Best Square Head Bolts (April 2024) - Rated by CherryPicks' Experts

At a Glance: Our Top Picks

Top 1

Small Parts FSC50250SHB Grade A Steel Square Head Bolt, 1/2"-13" Thread Size,...

9.9
CPR Score
Top 2

5/8"-11 x 2" A307 Grade A Square Head Bolt Plain, Fully Threaded, Size: 5/8"-...

9.7
CPR Score
Top 3

Hard-to-Find Fastener 014973311971 Square Head Bolts, 5/16-18 x 1, Piece-10

9.7
CPR Score
Tips

We researched and analyzed dozens of Square Head Bolts reviews from different Fasteners brands, including Small Parts, Hard-to-Find Fastener, Newport Fasteners, Lexar Industrial, MakerBeam, ASMC Industrial And Jet Fitting & Supply Corp. We've selected 29 best Square Head Bolts in the following ranking by considering price, product features, easy to use and so on.

* Cherrypicksreviews.com is reader-supported, Our editor review, and recommend the best products based on extensive data analysis, if you click on the product links, we may earn a commission through qualifying products purchased.

The Best Square Head Bolts Rated by CherryPicks

Market Overview
Square Head Bolts Reviewed
  • Reviews Analyzed: 155 Items
  • CPR Avg. Rating: 8.5 / 10
29 Products Evaluated
  • Highest Price: $231.99
  • Lowest Price: $7.28
  • Avg. Price: $26.78
Price Disclaimer

Top 29 Square Head Bolts on Amazon (Verified You can Buy)

Top 1

Small Parts FSC50250SHB Grade A Steel Square Head Bolt, 1/2"-13" Thread Size, 2-1/2" Long (Pack of 5)

Small Parts
FSC50250SHB
2.5 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 1/2''-13
Show More
Top 2

5/8"-11 x 2" A307 Grade A Square Head Bolt Plain, Fully Threaded, Size: 5/8"-11, Length: 2", Head: Square, Drive: External Square, Material: Steel, Finish: Plain (Inch) (Quantity: 25)

Jet Fitting & Supply Corp
5.6 Pounds

Ratings for Jet Fitting & Supply Corp (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Jet Fitting & Supply Corp -

Features

Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!
Top 3

Hard-to-Find Fastener 014973311971 Square Head Bolts, 5/16-18 x 1, Piece-10

Hard-to-Find Fastener
014973311971
2.5 x 1.62 x 1.44 Inches

Ratings for Hard-to-Find Fastener (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Monster Fastener ✅ -

Features

Diameter: 5/16"
Length: 1 inch
Show More
Top 4

Hard-to-Find Fastener 014973312077 Square Head Bolts, 3/8-16 x 1, Piece-10

Hard-to-Find Fastener
014973312077
2.5 x 2.19 x 1.44 Inches

Ratings for Hard-to-Find Fastener (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Diameter: 3/8"
Length: 1 inch
Show More
Top 5

(10) Square Head 3/4-10 x 4 Bolts Unplated A307 1-1/8 Square

Lexar Industrial
6.0 Pounds

Ratings for Lexar Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lexar Industrial -

Features

Diameter: 3/4-10
Length: 4
Show More
Top 6

Small Parts FSC382SHB Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 2" Long (Pack of 10)

Small Parts
FSC382SHB
2.0 x 0.0 x 0.3125 Inches
1.01 Pounds

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 3/8''-16
Show More
Top 7

Small Parts FSC5162SHB Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 2" Long (Pack of 10)

Small Parts
FSC5162SHB
2.0 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 5/16''-18
Show More
Top 8

5/8"-11 x 3 1/2" A307 Grade A Square Head Bolt Plain, Partial, Size: 5/8"-11, Length: 3-1/2", Head: Square, Drive: External Square, Material: Steel, Finish: Plain (Inch) (Quantity: 25)

Jet Fitting & Supply Corp
8.65 Pounds

Ratings for Jet Fitting & Supply Corp (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Jet Fitting & Supply Corp -

Features

Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!
Top 9

Small Parts FSC5161SHB Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 1" Long (Pack of 25)

Small Parts
FSC5161SHB
1.0 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 5/16''-18
Show More
Top 10

(35) Square Head 1/2-13 x 3" Bolts Unplated A307 3/4" Sq

Lexar Industrial
0.0006 Pounds

Ratings for Lexar Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lexar Industrial -

Features

Thread Diameter: 1/2-13
Length: 3
Show More
Top 11

Small Parts FSC141SHB Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1" Long (Pack of 25)

Small Parts
FSC141SHB
1.0 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 1/4''-20
Show More
Top 12

Small Parts FSC142SHB Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 2" Long (Pack of 25)

Small Parts
FSC142SHB
2.0 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 1/4''-20
Show More
Top 13

(50) Square Head 3/8-16 x 4 Bolts Unplated A307 9/16" Sq

Lexar Industrial
6.5625 Pounds

Ratings for Lexar Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lexar Industrial -

Features

Thread Diameter: 3/8-16
Length: 4
Show More
Top 14

Small Parts FSC38250SHB Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 2-1/2" Long (Pack of 10)

Small Parts
FSC38250SHB
2.5 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 3/8''-16
Show More
Top 15

(8) Square Head 3/4-10 x 5 Bolts Unplated A307 1-1/8 Square

Lexar Industrial
5.75 Pounds

Ratings for Lexar Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lexar Industrial -

Features

Diameter: 3/4-10
Length: 5
Show More
Top 16

Small Parts FSC381SHB Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)

Small Parts
FSC381SHB
1.0 x 0.0 x 0.3125 Inches
0.46 Pounds

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 3/8''-16
Show More
Top 17

Makerbeam M3 Bolts with Square Head, 12mm 100 pcs and 25mm 25pcs

MakerBeam
101013
0.0006 Pounds

Ratings for MakerBeam (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Makerbeam -

Features

1 bag of approximately 100 M3 stainless steel square head bolts (12mm) designed for MakerBeam (10x10mm in diameter).
1 bag of approximately 25 M3 stainless steel square head bolts (25mm)
Show More
Top 18

Small Parts FSC504SHB Grade A Steel Square Head Bolt, 1/2"-13" Thread Size, 4" Long (Pack of 5)

Small Parts
FSC504SHB
4.0 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 1/2''-13
Show More
Top 19

Small Parts FSC58250SHB Grade A Steel Square Head Bolt, 5/8"-11" Thread Size, 2-1/2" Long (Pack of 5)

Small Parts
FSC58250SHB
2.5 x 0.0 x 0.3125 Inches
1.01 Pounds

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 5/8''-11
Show More
Top 20

Small Parts FSC34450SHB Grade A Steel Square Head Bolt, 3/4"-10" Thread Size, 4-1/2" Long

Small Parts
FSC34450SHB
4.5 x 0.0 x 0.3125 Inches
0.66 Pounds

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 3/4''-10
Show More
Top 21

1/4"-20 x 3/4" A307 Grade A Square Head Machine Bolt Low Carbon Steel Zinc Plated Pk 50

ASMC Industrial
0.01 Pounds

Ratings for ASMC Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
ASMC Industrial -

Features

Please see the specifications in the table below for full details. If you have any questions or doubts, or if your requirements include specific dimensions, please contact us prior to placing your order.
PICTURES ARE REPRESENTATIVE OF ITEM, BUT ARE NOT OF THE ACTUAL ITEM. Product dimensions, finish, head markings, thread length, stamping shape or forging shape, etc., may differ from picture. Products are guaranteed to meet the specifications to which they are manufactured. Specifications allow for tolerances in dimension and shape, which can vary from lot to lot.
Show More
Top 22

Hard-to-Find Fastener 014973312084 Square Head Bolts, 3/8-16 x 1-1/4, Piece-10

Hard-to-Find Fastener
014973312084
2.5 x 2.19 x 1.44 Inches

Ratings for Hard-to-Find Fastener (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Diameter: 3/8"
Length: 1-1/4 inch
Show More
Top 23

(200) Square Head 5/16-18 x 1-1/4 Bolts Unplated A307 1/2" Sq

Lexar Industrial
6.8125 Pounds

Ratings for Lexar Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lexar Industrial -

Features

Diameter: 5/16-18
Length: 1-1/4
Show More
Top 24

Square Head Set Screw, Oval Point, 3/8-16 x 2", Alloy Steel Case Hardened, Black Oxide, Full Thread (Quantity: 100) Coarse Thread, 3/8 inch Square Head Bolts, Length: 2 inch

Newport Fasteners
2.0 Inches
6.01 Pounds

Ratings for Newport Fasteners (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Newport Fasteners -

Features

Thread: Coarse / Full Thread / Case Hardened / Black Oxide
Thread Diameter-Pitch: 3/8-16, Length: 2 inch
Show More
Top 25

Hard-to-Find Fastener 014973312015 Square Head Bolts, 5/16-18 x 1-1/2, Piece-10

Hard-to-Find Fastener
014973312015
2.5 x 1.62 x 1.44 Inches
0.26 Pounds

Ratings for Hard-to-Find Fastener (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Diameter: 5/16"
Length: 1-1/2 inch
Show More
Top 26

Small Parts FSC506SHB Grade A Steel Square Head Bolt, 1/2"-13" Thread Size, 6" Long (Pack of 5)

Small Parts
FSC506SHB
6.0 x 0.0 x 0.3125 Inches

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 1/2''-13
Show More
Top 27

Small Parts FSC516114SHB Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 1-1/4" Long (Pack of 25)

Small Parts
FSC516114SHB
1.25 x 0.0 x 0.3125 Inches
0.86 Pounds

Ratings for Small Parts (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Material: steel
Thread size: 5/16''-18
Show More
Top 28

(20) Square Head 5/8-11 x 3" Bolts Unplated A307 15/16" Sq

Lexar Industrial
0.0006 Pounds

Ratings for Lexar Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lexar Industrial -

Features

Thread Diameter: 5/8-11
Length: 3
Show More
Top 29

(10) Square Head 3/4-10 x 3 Bolts Unplated A307 1-1/8 Square

Lexar Industrial

Ratings for Lexar Industrial (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lexar Industrial -

Features

Thread Diameter: 3/4-10
Length: 3
Show More

Top 10 Square Head Bolts - Verified to Buy (Apr. 2024)

Top 7 Square Head Bolts Brands on Amazon

Here is the list of top-rated brands that were evaluated by CherryPicks.

  • Small Parts
  • Jet Fitting & Supply Corp
  • Hard-to-Find Fastener
  • Lexar Industrial
  • MakerBeam
  • ASMC Industrial
  • Newport Fasteners

Top 7 Square Head Bolts Sellers: CPR Seller Rank List

CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.

Rank Name Yearly Feedbacks Avg. Ratings
🥇 Amazon.com 385 4.7
🥈 Makerbeam 370 4.8
🥉 Lexar Industrial 197 4.9
4 Monster Fastener ✅ 132 4.8
5 Newport Fasteners 61 4.8
6 ASMC Industrial 51 4.9
7 Jet Fitting & Supply Corp 35 4.8
View or download top Square Head Bolts seller & rating report
Amazon.com [385] Makerbeam [370] Lexar Industrial [197] Monster Fastener ✅ [132] Newport Fasteners [61] ASMC Industrial [51] Jet Fitting & Supply Corp [35] Amazon.com 31% Makerbeam 30% Lexar Industrial 16% Monster Fastener ✅ 11% Newport Fasteners 5% ASMC Industrial 4% Jet Fitting & Supply Corp 3%

[Get] Square Head Bolts Deals (✅Exclusively for Prime)

What does "Amazon Fulfilled" Mean?

Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.

When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.

What does "Prime" Mean?

"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are  an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.

Prime members also have access to other benefits, including 2-Day ShippingExclusive Member DealsPrime VideoBuy With PrimeAmazon MusicPrime Gaming, and more.

Shop Prime Square Head Bolts Deals

What does "Free Shipping" Mean?

"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.

Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.


Why Should You Trust Us?

Now hundreds and thousands of Fasteners supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best Square Head Bolts to buy for new April 2024?

CherryPicks’s Methodology for Evaluating Square Head Bolts

We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Fasteners items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.

We collected and analyzed 4,081 of Square Head Bolts reviews based on our selection criteria. It helped us shortlist the top qualified and rated Square Head Bolts for Fasteners, We found that most customers choose Square Head Bolts with an average price of $26.78, and the top brands are Small Parts, Hard-to-Find Fastener, Newport Fasteners, Lexar Industrial, MakerBeam, ASMC Industrial And Jet Fitting & Supply Corp

Then our expert-level editors reviewed all those quality items and selected the top 29 Square Head Bolts for you, We have researched hundreds of sellers and picked the top sellers for Fasteners, including Amazon.com, Makerbeam, Lexar Industrial, Monster Fastener ✅, Newport Fasteners, ASMC Industrial And Jet Fitting & Supply Corp. The Small Parts FSC50250SHB Grade A Steel Square He... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 7 consumers with an average rating of 4.7.

We've helped a lot of satisfied users get the right Industrial & Scientific product based on their needs, and save lots of time for them to pick Square Head Bolts to buy.


Written By Ronald M. Bieber

Ronald M. Bieber has rich experience as a science lab instructor in a college and this has provided him with the right requisite knowledge and experience to be a professional in the act of spotting the right and wrong product. He would be helping us make the right choice in this regard.