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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £4.99 | 2 to 4 working days |
| Next Day | £9.99 |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 5 to 7 working days |
Product Number: IS3421D
Variations
Working on HGV wheel nuts, heavy plant, or large-bore fasteners with a standard socket risks slipping under high torque and in professional environments that means downtime and damage. The Sealey IS3421D is a 21mm deep impact socket with 3/4" square drive, designed to handle exactly these demands. Built from drop-forged Chrome Molybdenum steel with WallDrive® geometry, it is hardened and tempered for added strength and finished with a phosphate coating for greater corrosion resistance. The deep profile makes it ideal for recessed fasteners and extended bolt heads. Suitable for use with air impact wrenches and rated for daily professional use as part of Sealey's Premier Hand Tools range. Backed by a lifetime guarantee.
Key Features:PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Model No | IS3421D |
|---|---|
| Brand | Premier |
| Depth | Deep |
| Drive | 3/4"Sq |
| Material | Chrome Molybdenum |
| Nett Weight | 0.36kg |
| Size | 21mm |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Standard Delivery: £4.99
Next Day Delivery Available
Delivery Estimate: 2 to 4 working days
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| Technical Specification | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | IS3417 | IS3419 | IS3424 | IS3427 | S1221D | S12SP14 | 28190 | 18819 | 16403 | 50424 |
A. The IS3421D is a 21mm deep impact socket with a 3/4" square drive.
A. It is made from Chrome Molybdenum steel, drop-forged and hardened and tempered for added strength.
A. Yes, the IS3421D is ideal for use with air impact wrenches and is suitable for daily professional use.
A. The IS3421D has a phosphate finish which provides greater corrosion resistance.
A. WallDrive® is the socket profile geometry used on the IS3421D, designed to improve grip on fasteners under impact conditions.
A. Yes, the IS3421D is backed by a lifetime guarantee.
A. Yes, related variants in this range include IS3417D, IS3419D, IS3421, and IS3424D, each offering a different size or depth configuration.
A. Yes, alternative sockets for similar applications include IS3417, IS3419, IS3424, and IS3427, which are standard-depth versions or different sizes within the 3/4" drive range.
A. Yes. Parts for Machines supplies genuine Sealey products.
A. Every product comes with a different guarantee and warranty. Warranty details are shown in the product's tech specs or datasheet where available.
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