In this comparison, the Delock M3 x 40 mm Fan Screws Set 20 pieces fan screws set is evaluated alongside similar hardware kits from the same manufacturer: Delock M5 x 40 mm Fan Screws Set 20 Pieces 42549, Delock M3 x 30 mm Fan Screws Set, 20 pieces, Delock M3 x 20 mm Fan Screws Set 20-Piece, Delock Fan Screws Set M4 x 45 mm 20 pieces, and DELOCK Fan Screw Set M5 x 30 mm 20 pieces. All these products share the primary purpose of securely installing and mounting cooling fans in computer cases or radiators, and each comes in a 20-piece package. The key differences lie in their thread diameter (M3, M4, or M5) and screw length (ranging from 20 to 45 mm), which directly determine compatibility with specific fans, radiators, and mounting clearance.
⚙️ The table below compares essential characteristics such as brand, thread size, screw length, quantity, and primary purpose to help you determine compatibility with your hardware setup.
| Comparison parameter | Delock M3 x 40 mm | Delock M5 x 40 mm (42549) | Delock M3 x 30 mm | Delock M3 x 20 mm | Delock M4 x 45 mm | DELOCK M5 x 30 mm | Practical significance of differences |
|---|
| Brand | DELOCK | DELOCK | DELOCK | DELOCK | DELOCK | DELOCK | All options are made by the same manufacturer, ensuring consistent build quality and hardware reliability. |
| Thread diameter | M3 | M5 | M3 | M3 | M4 | M5 | The thread size must match the mounting holes on your fan or radiator; incorrect sizing prevents installation. |
| Screw length | 40 mm | 40 mm | 30 mm | 20 mm | 45 mm | 30 mm | Length determines compatibility with fan thickness, radiator depth, and custom clearance requirements. |
| Quantity per pack | 20 pieces | 20 pieces | 20 pieces | 20 pieces | 20 pieces | 20 pieces | Identical pack sizes provide convenience for multi-fan setups or maintaining a spare hardware supply. |
| Purpose | Fan mounting | Mounting to radiators or chassis | Cooling assembly | Case fan fixation | Reliable fan attachment | Cooling component connection | All sets serve cooling installation purposes but require exact dimensional matching. |
◎ The table below evaluates the suitability of each screw set for various PC building and cooling maintenance scenarios.
| Use case | Recommended product | Why |
|---|
| Standard PC case fans with M3 mounting holes | Delock M3 x 20 mm Fan Screws Set 20-Piece | The 20 mm length is ideal for standard case fans without thick clearance gaps. |
| Medium-thickness cooling component installation with M3 | Delock M3 x 30 mm Fan Screws Set, 20 pieces | The 30 mm length accommodates moderate gaps and custom brackets. |
| Deep mounting or specialized clearance with M3 threading | Delock M3 x 40 mm Fan Screws Set 20 pieces | The main model is designed for setups requiring a 40 mm length with M3 threading. |
| Fans featuring M4 standard mounting holes | Delock Fan Screws Set M4 x 45 mm 20 pieces | M4 threading and 45 mm length suit specific cooling hardware requirements. |
| Water-cooling radiators requiring M5 threads | Delock M5 x 40 mm (42549) and DELOCK M5 x 30 mm | Thicker M5 threads provide robust fastening for radiators and heavy cooling blocks. |
Recommendation: The Delock M3 x 40 mm Fan Screws Set 20 pieces is best suited for custom PC builds where cooling fans must be secured through deep mounting points using M3 metric threads. If your cooling hardware requires a different thread diameter (M4 or M5) or a shorter length (20 or 30 mm), select the corresponding alternative from the Delock lineup.
