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  7. Square Nuts

Square Nuts (442 items)

Zoro Select No 10-24 Steel Zinc Plated Finish Machine Screw Square Nut, 100 PK SQMSNI2-100-100BX
Zoro Select

No 10-24 Steel Zinc Plated Finish Machine Screw Square Nut, 100 PK

Zoro # G0848382
Mfr # SQMSNI2-100-100BX
product price:  $5.29
/pk 100, $0.05/ea
Zoro Select 1/2"-13 Low Carbon Steel Plain Finish Square Nut - Regular, 50 pk. U11120.050.0001
Zoro Select

1/2"-13 Low Carbon Steel Plain Finish Square Nut - Regular, 50 pk.

Zoro # G3429618
Mfr # U11120.050.0001
product price:  $13.89
/pk 50, $0.28/ea
Zoro Select 5/16"-18 Low Carbon Steel Plain Finish Square Nut - Regular, 100 pk. U11120.031.0001
Zoro Select

5/16"-18 Low Carbon Steel Plain Finish Square Nut - Regular, 100 pk.

Zoro # G3429636
Mfr # U11120.031.0001
product price:  $11.99
/pk 100, $0.12/ea
Zoro Select 1/4"-20 Steel Zinc Plated Finish Machine Screw Square Nut, 100 pk. SQMSNI20250-100BX
Zoro Select

1/4"-20 Steel Zinc Plated Finish Machine Screw Square Nut, 100 pk.

Zoro # G2206461
Mfr # SQMSNI20250-100BX
product price:  $8.15
/pk 100, $0.08/ea
Zoro Select 1/2"-13 Stainless Steel Plain Finish Square Nut - Regular, 10 pk. U51096.050.0001
Zoro Select

1/2"-13 Stainless Steel Plain Finish Square Nut - Regular, 10 pk.

Zoro # G3429469
Mfr # U51096.050.0001
product price:  $24.55
/pk 10, $2.46/ea
Zoro Select 1"-8 Low Carbon Steel Plain Finish Square Nut - Regular, 5 pk. U11120.100.0001
Zoro Select

1"-8 Low Carbon Steel Plain Finish Square Nut - Regular, 5 pk.

Zoro # G3429575
Mfr # U11120.100.0001
product price:  $10.49
/pk 5, $2.10/ea
Zoro Select 1/4"-20 Low Carbon Steel Plain Finish Square Nut - Regular, 100 pk. U11120.025.0001
Zoro Select

1/4"-20 Low Carbon Steel Plain Finish Square Nut - Regular, 100 pk.

Zoro # G3429645
Mfr # U11120.025.0001
product price:  $6.39
/pk 100, $0.06/ea
Zoro Select 3/8"-16 Low Carbon Steel Plain Finish Square Nut - Regular, 100 pk. U11120.037.0001
Zoro Select

3/8"-16 Low Carbon Steel Plain Finish Square Nut - Regular, 100 pk.

Zoro # G3429627
Mfr # U11120.037.0001
product price:  $15.79
/pk 100, $0.16/ea
Zoro Select 5/8"-11 Low Carbon Steel Plain Finish Square Nut - Regular, 25 pk. U11120.062.0001
Zoro Select

5/8"-11 Low Carbon Steel Plain Finish Square Nut - Regular, 25 pk.

Zoro # G3429609
Mfr # U11120.062.0001
product price:  $14.29
/pk 25, $0.57/ea
Zoro Select 3/8"-16 Stainless Steel Plain Finish Square Nut - Regular, 25 pk. U51096.037.0001
Zoro Select

3/8"-16 Stainless Steel Plain Finish Square Nut - Regular, 25 pk.

Zoro # G3429487
Mfr # U51096.037.0001
product price:  $18.89
/pk 25, $0.76/ea
Zoro Select 1/4"-20 Stainless Steel Plain Finish Square Nut - Regular, 25 pk. U51096.025.0001
Zoro Select

1/4"-20 Stainless Steel Plain Finish Square Nut - Regular, 25 pk.

Zoro # G3429505
Mfr # U51096.025.0001
product price:  $7.15
/pk 25, $0.29/ea
Zoro Select No 8-32 Steel Zinc Plated Finish Machine Screw Square Nut, 100 PK SQMSNI20-80-100BX
Zoro Select

No 8-32 Steel Zinc Plated Finish Machine Screw Square Nut, 100 PK

Zoro # G3150271
Mfr # SQMSNI20-80-100BX
product price:  $6.29
/pk 100, $0.06/ea
Zoro Select 5/16"-18 Stainless Steel Plain Finish Square Nut - Regular, 25 pk. U51096.031.0001
Zoro Select

5/16"-18 Stainless Steel Plain Finish Square Nut - Regular, 25 pk.

Zoro # G3429496
Mfr # U51096.031.0001
product price:  $8.19
/pk 25, $0.33/ea
Zoro Select 3/4"-10 Low Carbon Steel Plain Finish Square Nut - Regular, 10 pk. U11120.075.0001
Zoro Select

3/4"-10 Low Carbon Steel Plain Finish Square Nut - Regular, 10 pk.

Zoro # G3429590
Mfr # U11120.075.0001
product price:  $9.29
/pk 10, $0.93/ea
Zoro Select No 8-32 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 PK U11140.016.0001
Zoro Select

No 8-32 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 PK

Zoro # G3429819
Mfr # U11140.016.0001
product price:  $6.55
/pk 100, $0.07/ea
Zoro Select No 6-32 Stainless Steel Plain Finish Square Nut - Regular, 50 PK U51096.013.0001
Zoro Select

No 6-32 Stainless Steel Plain Finish Square Nut - Regular, 50 PK

Zoro # G2530626
Mfr # U51096.013.0001
product price:  $6.85
/pk 50, $0.14/ea
Zoro Select 1/4"-20 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk. U11140.025.0001
Zoro Select

1/4"-20 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk.

Zoro # G3429785
Mfr # U11140.025.0001
product price:  $6.99
/pk 100, $0.07/ea
Zoro Select No 12-24 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 PK U11140.021.0001
Zoro Select

No 12-24 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 PK

Zoro # G3429791
Mfr # U11140.021.0001
product price:  $7.69
/pk 100, $0.08/ea
Zoro Select 5/16"-18 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk. U11140.031.0001
Zoro Select

5/16"-18 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk.

Zoro # G3429776
Mfr # U11140.031.0001
product price:  $9.99
/pk 100, $0.10/ea
Zoro Select 1/2"-13 Steel Zinc Plated Finish Square Nut - Regular, 50 pk. SQNI20500-050BX
Zoro Select

1/2"-13 Steel Zinc Plated Finish Square Nut - Regular, 50 pk.

Zoro # G1664363
Mfr # SQNI20500-050BX
product price:  $13.19
/pk 50, $0.26/ea
Zoro Select 5/16"-18 Steel Hot Dip Galvanized Finish Square Nut - Regular, 100 pk. SQNI2031G-100BX
Zoro Select

5/16"-18 Steel Hot Dip Galvanized Finish Square Nut - Regular, 100 pk.

Zoro # G1354281
Mfr # SQNI2031G-100BX
product price:  $12.19
/pk 100, $0.12/ea
Zoro Select 1/2"-10 Brass Square Nut - Regular, 10 pk. SQNTBSL1210
Zoro Select

1/2"-10 Brass Square Nut - Regular, 10 pk.

Zoro # G5985411
Mfr # SQNTBSL1210
product price:  $86.49
/pk 10, $8.65/ea
Sold in mult. of 2 for $172.98
Zoro Select 5/8"-11 Steel Zinc Plated Finish Square Nut - Regular, 25 pk. SQNI20620-025BX
Zoro Select

5/8"-11 Steel Zinc Plated Finish Square Nut - Regular, 25 pk.

Zoro # G1131234
Mfr # SQNI20620-025BX
product price:  $10.75
/pk 25, $0.43/ea
Zoro Select 3/8"-16 Steel Zinc Plated Finish Machine Screw Square Nut, 100 pk. SQMSNI20370-100BX
Zoro Select

3/8"-16 Steel Zinc Plated Finish Machine Screw Square Nut, 100 pk.

Zoro # G2006243
Mfr # SQMSNI20370-100BX
product price:  $13.39
/pk 100, $0.13/ea
Zoro Select M6-5.00 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk. M11140.060.0001
Zoro Select

M6-5.00 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk.

Zoro # G2277031
Mfr # M11140.060.0001
product price:  $9.69
/pk 100, $0.10/ea
Zoro Select 12-24 SQUARE MACHINE SCREW NUT STAINLESS STEEL, PK2500 12NQ188
Zoro Select

12-24 SQUARE MACHINE SCREW NUT STAINLESS STEEL, PK2500

Zoro # G2447950
Mfr # 12NQ188
product price:  $330.99
/pk 2500, $0.13/ea
Zoro Select M6-1.0 DIN562 THIN SQUARE NUT A2 STAINLESS STEEL, PK3000 M6D562A2
Zoro Select

M6-1.0 DIN562 THIN SQUARE NUT A2 STAINLESS STEEL, PK3000

Zoro # G9081906
Mfr # M6D562A2
product price:  $144.99
/pk 3000, $0.05/ea
Zoro Select 6.3 mm White Plastic License Plate Nuts, 50 pk. 1228PK
Zoro Select

6.3 mm White Plastic License Plate Nuts, 50 pk.

Zoro # G5104197
Mfr # 1228PK
product price:  $7.29
/pk 50, $0.15/ea
Zoro Select 1-1/8"-7 Low Carbon Steel Plain Finish Square Nut - Heavy U11121.112.0001
Zoro Select

1-1/8"-7 Low Carbon Steel Plain Finish Square Nut - Heavy

Zoro # G2530529
Mfr # U11121.112.0001
product price:  $2.79
/ea
Sold in mult. of 4 for $11.16
Zoro Select 1-1/2"-6 Low Carbon Steel Plain Finish Square Nut - Regular U11120.150.0001
Zoro Select

1-1/2"-6 Low Carbon Steel Plain Finish Square Nut - Regular

Zoro # G3429548
Mfr # U11120.150.0001
product price:  $6.99
/ea
Sold in mult. of 2 for $13.98
Zoro Select 5/16"-18 Steel Zinc Plated Finish Machine Screw Square Nut, 100 pk. SQMSNI20310-100BX
Zoro Select

5/16"-18 Steel Zinc Plated Finish Machine Screw Square Nut, 100 pk.

Zoro # G0546253
Mfr # SQMSNI20310-100BX
product price:  $10.19
/pk 100, $0.10/ea
Zoro Select 1/4"-20 Steel Zinc Plated Finish Square Nut - Regular, 100 pk. SQNI20250-100BX
Zoro Select

1/4"-20 Steel Zinc Plated Finish Square Nut - Regular, 100 pk.

Zoro # G2325845
Mfr # SQNI20250-100BX
product price:  $8.29
/pk 100, $0.08/ea
Zoro Select 1"-8 Low Carbon Steel Plain Finish Square Nut - Heavy U11121.100.0001
Zoro Select

1"-8 Low Carbon Steel Plain Finish Square Nut - Heavy

Zoro # G2530538
Mfr # U11121.100.0001
product price:  $7.15
/ea
Zoro Select M8-1.25 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk. M11140.080.0001
Zoro Select

M8-1.25 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk.

Zoro # G2105190
Mfr # M11140.080.0001
product price:  $14.79
/pk 100, $0.15/ea
Zoro Select M6-1.0 DIN 557 SQUARE NUT A2 STAINLESS STEEL, PK3000 M6D557A2
Zoro Select

M6-1.0 DIN 557 SQUARE NUT A2 STAINLESS STEEL, PK3000

Zoro # G8538679
Mfr # M6D557A2
product price:  $202.99
/pk 3000, $0.07/ea
Zoro Select M10-8.00 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk. M11140.100.0001
Zoro Select

M10-8.00 Low Carbon Steel Zinc Plated Finish Square Nut - Regular, 100 pk.

Zoro # G1941506
Mfr # M11140.100.0001
product price:  $23.79
/pk 100, $0.24/ea
Square Nuts (442 items)
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About Square Nuts

Square Nuts are a type of fastener commonly used in industrial and construction applications. Square Nuts are typically threaded and designed to be secured to a bolt, threaded rod, or other fasteners to create a secure connection between two pieces of material.

Types of Square Nuts

Square Nuts come in several sizes and shapes including square nuts with flanges, and hexagonal square nuts. Depending on the application, certain types of Square Nuts may be more suitable than others due to their different dimensions, threading patterns, or material compositions.

How Square Nuts are Made

Square Nuts are typically manufactured from steel alloys that can withstand high levels of stress and strain while also being corrosion resistant. Depending on the application they may be heat treated for additional strength or plated with zinc for added protection against rust.

Industries that use Square Nuts

Square Nuts are often used in automotive repair shops when replacing brakes or shock absorbers. They're also frequently used by construction professionals when installing decking boards or railing systems. Finally, they’re commonly used by electricians when mounting electrical boxes onto walls using square threaded rods and nuts.

Find the Square Nuts You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of fasteners, along with other tools or supplies to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.
Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

Related Categories

Hex NutsLock NutsSpring Nuts & Cage NutsPanel NutsGeneral Washers
Hex Head Cap ScrewsMachine ScrewsLock WashersFully-Threaded Rods & StudsHollow Wall Anchors
3/8 galvanized nut1/2-13 hex nuts1/4-20 square nut5/8-11 hex nuts1/4-20 stainless steel nut
fine thread nutssquare nut3/8-16 stainless nut1/4-20 stainless steel nutsvinyl ester resin

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