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Phillips Flat-Head Machine Screws — M3 x 40 mm, Zinc Finish, 20-Pack
- Mfg.#
- 43651-M
- Sku#
- 6335731
- Features Class 4.8 steel construction for basic strength applications
- Designed as M3-0.50 coarse metric thread, suitable for metric assemblies
- Features Phillips flat-head drive for countersinking into work surfaces
- Measures 40mm in length, suitable for through-fastening and panel joins
- Finished in zinc with a silver appearance to resist corrosion in general use
* Estimated stock levels as of Sat, May 9, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
This is a Class 4.8 Phillips flat-head metric machine screw designed for precision fastening where a flush finish and reliable strength are required. Made from steel with a zinc finish and a silver appearance, the M3-0.50 x 40mm screw offers a standard 0.50mm thread pitch and a 40mm length that suits small machinery, electronics assemblies, brackets, and repair work where metric hardware is specified. The Phillips recess allows quick installation with common drivers, and the flat head seats neatly into countersunk holes for a smooth surface. Produced in Taiwan and finished for basic corrosion resistance, these screws are useful when you need consistent sizing and straightforward fastening for maintenance, prototyping, or equipment assembly. Packaged as a set of 20, they provide a ready supply for multiple projects.
Specifications
General
| Class | Class 4.8 |
|---|---|
| Color | Silver |
| Drive Style | Phillips |
| Finish | Zinc |
| Head Style | Flat |
| Imperial/Metric | Metric |
| Indoor/Outdoor | Indoor |
| Material | Steel |
| Pack Qty | 20 |
| Point Type | Blunt |
| Thread Type | USS Coarse |
| Type | Machine Screw |
Dimensions
| Diameter | M3 |
|---|---|
| Length | 40mm |
| Size | M3-0.50 x 40mm |
Manufacturing Details
The following information is subject to change without notice
| Country of Origin | TW |
|---|---|
| Prop 65 Warning |
WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
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