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  7. Castle Nuts

Castle Nuts (213 items) - Page 2

Zoro Select 5/16"-18 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk. 351035G
Zoro Select

5/16"-18 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk.

Zoro # G1121531
Mfr # 351035G
product price:  $17.19
/pk 100, $0.17/ea
Zoro Select 5/16-24 CASTLE NUTS GR5 ZINC, PK300 32NHC5
Zoro Select

5/16-24 CASTLE NUTS GR5 ZINC, PK300

Zoro # G2442369
Mfr # 32NHC5
product price:  $124.99
/pk 300, $0.42/ea
Zoro Select 1"-14 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 10 pk. SNFI21000-010P
Zoro Select

1"-14 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 10 pk.

Zoro # G2851886
Mfr # SNFI21000-010P
product price:  $18.39
/pk 10, $1.84/ea
Zoro Select 1-1/2"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk. 354485G
Zoro Select

1-1/2"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk.

Zoro # G0489562
Mfr # 354485G
product price:  $43.99
/pk 5, $8.80/ea
Zoro Select 7/8"-14 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 15 pk. 287280-PG
Zoro Select

7/8"-14 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 15 pk.

Zoro # G1016766
Mfr # 287280-PG
product price:  $35.79
/pk 15, $2.39/ea
Zoro Select 7/16"-20 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 25 pk. 287260-PG
Zoro Select

7/16"-20 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 25 pk.

Zoro # G3128815
Mfr # 287260-PG
product price:  $18.89
/pk 25, $0.76/ea
Zoro Select 1/2"-13 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 50 pk. 351105G
Zoro Select

1/2"-13 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 50 pk.

Zoro # G2746116
Mfr # 351105G
product price:  $13.89
/pk 50, $0.28/ea
Zoro Select 1/2"-20 Grade 5 Zinc Plated Finish Steel Round Slotted Castle Nut, 50 pk. 351119G
Zoro Select

1/2"-20 Grade 5 Zinc Plated Finish Steel Round Slotted Castle Nut, 50 pk.

Zoro # G2788021
Mfr # 351119G
product price:  $11.99
/pk 50, $0.24/ea
Zoro Select 7/16"-14 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk. 351075G
Zoro Select

7/16"-14 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk.

Zoro # G2409811
Mfr # 351075G
product price:  $21.19
/pk 100, $0.21/ea
Zoro Select 2-1/2"-12 Grade 2 Plain Finish Carbon Steel Round Slotted Castle Nut U12020.250.0001
Zoro Select

2-1/2"-12 Grade 2 Plain Finish Carbon Steel Round Slotted Castle Nut

Zoro # G2520799
Mfr # U12020.250.0001
product price:  $102.99
/ea
Zoro Select 3/4"-10 Grade 2H Plain Finish Steel Round Slotted Castle Nut, 10 pk. 352228G
Zoro Select

3/4"-10 Grade 2H Plain Finish Steel Round Slotted Castle Nut, 10 pk.

Zoro # G0289651
Mfr # 352228G
product price:  $15.49
/pk 10, $1.55/ea
Zoro Select 5/8"-11 Grade 5 Zinc Plated Finish Carbon Steel Round Slotted Castle Nut, 10 pk. U12006.062.0001
Zoro Select

5/8"-11 Grade 5 Zinc Plated Finish Carbon Steel Round Slotted Castle Nut, 10 pk.

Zoro # G2521018
Mfr # U12006.062.0001
product price:  $18.89
/pk 10, $1.89/ea
Zoro Select 3/4"-16 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 20 pk. 287276-PG
Zoro Select

3/4"-16 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 20 pk.

Zoro # G2862361
Mfr # 287276-PG
product price:  $32.29
/pk 20, $1.61/ea
Zoro Select 5/16"-18 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 50 pk. 287050-PG
Zoro Select

5/16"-18 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 50 pk.

Zoro # G2071413
Mfr # 287050-PG
product price:  $15.19
/pk 50, $0.30/ea
Zoro Select 1-1/4"-7 Grade 2H Plain Finish Steel Round Slotted Castle Nut U12040.125.0001
Zoro Select

1-1/4"-7 Grade 2H Plain Finish Steel Round Slotted Castle Nut

Zoro # G2520519
Mfr # U12040.125.0001
product price:  $34.99
/ea
Zoro Select Castle Nut, Steel, Black Oxide M12000.220.0001
Zoro Select

Castle Nut, Steel, Black Oxide

Zoro # G0302438
Mfr # M12000.220.0001
product price:  $85.79
/pk 25, $3.43/ea
Zoro Select 1-1/8"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk. 354365G
Zoro Select

1-1/8"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk.

Zoro # G2072463
Mfr # 354365G
product price:  $23.55
/pk 5, $4.71/ea
Zoro Select 3/8"-24 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 50 pk. 287256-PG
Zoro Select

3/8"-24 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 50 pk.

Zoro # G3122174
Mfr # 287256-PG
product price:  $22.89
/pk 50, $0.46/ea
Zoro Select 1-1/4"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk. 354405G
Zoro Select

1-1/4"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk.

Zoro # G1573345
Mfr # 354405G
product price:  $32.75
/pk 5, $6.55/ea
Zoro Select Castle Nut, Steel, Black Oxide M12020.240.0150
Zoro Select

Castle Nut, Steel, Black Oxide

Zoro # G9900801
Mfr # M12020.240.0150
product price:  $83.59
/pk 10, $8.36/ea
Zoro Select Castle Nut, Steel, Black Oxide M12020.200.0150
Zoro Select

Castle Nut, Steel, Black Oxide

Zoro # G9900838
Mfr # M12020.200.0150
product price:  $69.09
/pk 25, $2.76/ea
Zoro Select 1"-8 Grade 2 Plain Finish Carbon Steel Round Slotted Castle Nut, 5 pk. U12050.100.0001
Zoro Select

1"-8 Grade 2 Plain Finish Carbon Steel Round Slotted Castle Nut, 5 pk.

Zoro # G2520458
Mfr # U12050.100.0001
product price:  $7.99
/pk 5, $1.60/ea
Zoro Select 1/4"-20 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk. 351015G
Zoro Select

1/4"-20 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk.

Zoro # G2474202
Mfr # 351015G
product price:  $15.79
/pk 100, $0.16/ea
Zoro Select 5/8-18 CASTLE NUTS ZINC, PK150 63NHC
Zoro Select

5/8-18 CASTLE NUTS ZINC, PK150

Zoro # G2442210
Mfr # 63NHC
product price:  $302.99
/pk 150, $2.02/ea
Zoro Select 5/16-24 CASTLE NUTS ZINC, PK300 32NHC
Zoro Select

5/16-24 CASTLE NUTS ZINC, PK300

Zoro # G2442165
Mfr # 32NHC
product price:  $131.99
/pk 300, $0.44/ea
Zoro Select 1-14 CASTLE NUTS ZINC, PK50 101NHC
Zoro Select

1-14 CASTLE NUTS ZINC, PK50

Zoro # G2441949
Mfr # 101NHC
product price:  $389.99
/pk 50, $7.80/ea
Aftermarket 3/4" Castle Nut 387930S36
Aftermarket

3/4" Castle Nut

Zoro # G305606706
Mfr # 387930S36
product price:  $10.19
/ea
Zoro Select 5/8-18 CASTLE NUTS GR5 ZINC, PK150 63NHC5
Zoro Select

5/8-18 CASTLE NUTS GR5 ZINC, PK150

Zoro # G2442454
Mfr # 63NHC5
product price:  $207.99
/pk 150, $1.39/ea
Zoro Select Castle Nut, Steel, Black Oxide M12000.390.0001
Zoro Select

Castle Nut, Steel, Black Oxide

Zoro # G1941348
Mfr # M12000.390.0001
product price:  $22.49
/ea
Zoro Select 1/2"-20 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 50 pk. 371125G
Zoro Select

1/2"-20 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 50 pk.

Zoro # G0359475
Mfr # 371125G
product price:  $32.49
/pk 50, $0.65/ea
Zoro Select 1-3/8"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk. 371445G
Zoro Select

1-3/8"-12 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk.

Zoro # G1988542
Mfr # 371445G
product price:  $46.15
/pk 5, $9.23/ea
Huyett Slotted Locking Hex Nut 1-1/8x31/32 Steel Zinc Clear Trivalent NUTH01-1125-0968S3
Huyett

Slotted Locking Hex Nut 1-1/8x31/32 Steel Zinc Clear Trivalent

Zoro # G313330709
Mfr # NUTH01-1125-0968S3
product price:  $3.89
/ea
Sold in mult. of 5 for $19.45
Zoro Select 1-1/8"-12 Grade 5 Zinc Plated Finish Steel Round Slotted Castle Nut, 5 pk. 351367G
Zoro Select

1-1/8"-12 Grade 5 Zinc Plated Finish Steel Round Slotted Castle Nut, 5 pk.

Zoro # G1252002
Mfr # 351367G
product price:  $17.79
/pk 5, $3.56/ea
Zoro Select 1-3/4"-5 Grade 2H Plain Finish Steel Round Slotted Castle Nut, 5 pk. 352538G
Zoro Select

1-3/4"-5 Grade 2H Plain Finish Steel Round Slotted Castle Nut, 5 pk.

Zoro # G1784036
Mfr # 352538G
product price:  $79.19
/pk 5, $15.84/ea
Huyett Slotted Locking Hex Nut 3/4x41/64 Steel Plain NUTH01-0750-0640SP
Huyett

Slotted Locking Hex Nut 3/4x41/64 Steel Plain

Zoro # G713330897
Mfr # NUTH01-0750-0640SP
product price:  $0.88
/ea
Sold in mult. of 20 for $17.60
Zoro Select 5/8"-18 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 25 pk. 371205G
Zoro Select

5/8"-18 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 25 pk.

Zoro # G0640543
Mfr # 371205G
product price:  $24.89
/pk 25, $1.00/ea
Castle Nuts (213 items) - Page 2
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About Castle Nuts

Castle nuts are a type of fastener that is used to secure two or more parts together. They are often used in conjunction with bolts, screws, and other types of fasteners to create a secure connection.

Types of Castle Nuts

Castle nuts come in a variety of shapes and sizes depending on their intended use. Slotted castle nuts are commonly used for applications where vibration is an issue, while non-slotted versions are better suited for applications where security is paramount. Many slotted nut manufacturers offer custom designs to meet specific needs.

How Castle Nuts Are Made

Castle nuts are typically made from metal alloys such as steel or brass, but can also be made from other materials such as aluminum or plastic depending on the application requirements. The manufacturing process involves cutting threads into the material and then forming the castle shape around it before adding additional features like slots.

Industries That Use Castle Nuts

Castle nuts are commonly used by professionals in industries such as automotive, construction, aerospace engineering, and robotics due to their ability to securely connect components together without coming loose over time. Wherever high levels of security and reliability are needed when connecting two or more parts together, you will likely find castle nuts being used.

Find the Castle 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 NutsCap Nuts & Acorn NutsGeneral Washers
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castle nuts3/4-16 nutsmetric castle nuts5/8-18 nutcastle nut wrench
slotted hex nut5/8-11 nutscastle nutcastle nut castle nut5/8-18 nuts

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