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Square Impact Socket 21mm — 3/4″ Drive
Part No: 63045021 | Barcode: 9341202016910
Professional 4-point square impact socket in 21mm for 3/4″ drive impact tools. Designed for driving square-head fasteners, lag bolts, and square-drive applications commonly found in utilities, construction, and industrial equipment.
21mm
3/4″ Drive
4-Point Square
Chrome-Moly Steel
Impact Rated
Suitable For
Square Head Bolts
Lag Bolts
Utilities
Construction
Key Features & Benefits
- 4-point square profile — fits square-head fasteners precisely, providing full contact on all four flats for maximum torque transfer.
- Chrome-Molybdenum Alloy Steel — impact-rated material for pneumatic and cordless impact tools.
- Drop forged construction — aligned grain structure for maximum strength and durability.
- 3/4″ drive — compatible with heavy-duty impact wrenches for high-torque applications.
- Manufactured to international standards — certified to ISO 9001:2008, GGG-W-660A, DIN3121 and DIN3129.
When to Use This Socket
Use the 63045021 square socket for 21mm square-head fasteners. Common applications include utility pole hardware, construction lag bolts, agricultural equipment, and industrial valve stems. The 3/4″ drive provides the torque capacity needed for these typically heavy-duty fastening applications.
Authorised Australian Dealer — This product is sourced directly from Impact Tools Australia and is backed by full Australian manufacturer warranty and local support.
Product Specifications
| Size | D2 | D1 | L2 | L | Part No. |
|---|---|---|---|---|---|
| 16 | 40 | 40 | 24 | 52 | 63045016 |
| 17 | 40 | 40 | 24 | 52 | 63045017 |
| 19 | 40 | 40 | 24 | 52 | 63045019 |
| 20 | 42 | 42 | 24 | 52 | 63045020 |
| 21 | 42 | 42 | 24 | 52 | 63045021 ★ |
| 22 | 44 | 44 | 24 | 52 | 63045022 |
| 24 | 44 | 47 | 24 | 52 | 63045024 |
| 27 | 44 | 49 | 24 | 52 | 63045027 |
★ You are viewing the highlighted variant. Other sizes in this series are also available.
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