M3×5mm Stainless Steel Phillips Pan Head Machine Screw A2 50-Pack

M3×5mm Stainless Steel Phillips Pan Head Machine Screw — A2, 50-Pack

The M3×5mm A2 stainless steel Phillips pan head machine screw is one of the most widely used fasteners in electronics assembly, 3D printing, and robotics. The short 5mm length is ideal for thin panel mounting, PCB standoff attachment, and shallow tapped holes where a longer screw would bottom out. The A2 stainless steel construction provides corrosion resistance for long-term reliability.

Key Specifications

Parameter	Value
Thread Size	M3
Length	5mm
Material	A2 Stainless Steel
Drive	Phillips (cross head)
Head Style	Pan head
Thread Type	Machine thread (metric coarse)
Quantity	50pcs per pack
Standard	ISO 7045 / DIN 7985

Why Choose This Screw?

• M3 universal standard — the most common thread size in electronics, 3D printing, and robotics; compatible with M3 standoffs, nuts, and tapped holes across all major platforms
• 5mm short length — ideal for thin panel mounting, PCB standoff attachment, and shallow tapped holes; prevents bottoming out in short blind holes
• A2 stainless steel — corrosion-resistant for electronics enclosures, outdoor equipment, and humid environments
• Phillips drive — compatible with all standard Phillips #1 screwdrivers and magnetic bit drivers
• 50-pack quantity — practical workshop stock quantity for prototyping and small production runs

Typical Applications

• PCB mounting to M3 brass or nylon standoffs in electronics enclosures
• 3D printer frame and enclosure panel assembly (Voron, Bambu Lab, Prusa, Creality)
• Raspberry Pi, Arduino, and SBC case assembly (M3 standard mounting holes)
• Robotics chassis and servo bracket mounting (M3 most common size)
• Electronics enclosure and instrument panel assembly
• Fan mounting in PC cases and electronics enclosures

Compatible With

• M3 brass standoffs, nylon standoffs, and hex standoffs
• M3 hex nuts, nyloc nuts, and flange lock nuts
• M3 flat washers and split lock washers
• Phillips #1 screwdriver; magnetic tip recommended
• PCB mounting holes: standard 3.2mm clearance drill
• 3D printer platforms: Voron 2.4, Bambu Lab X1/P1, Prusa MK4, Creality Ender 3

Package Contents

• 50× M3×5mm A2 stainless steel Phillips pan head machine screws

Frequently Asked Questions

Q: What is the standard M3 screw length for PCB standoff mounting?

A: M3×5mm or M3×6mm are the most common lengths for attaching a PCB to M3 standoffs. 5mm is used for thin PCBs and short standoffs; 6mm for standard thickness PCBs. Ensure the screw length does not exceed the standoff thread depth to avoid bottoming out.

Q: What Phillips screwdriver size do I need for M3 screws?

A: M3 pan head screws use a Phillips #1 (PH1) screwdriver. Using a #0 or #2 will cause cam-out and strip the head. A magnetic tip screwdriver is strongly recommended for small M3 screws.

Q: Are these compatible with Voron 3D printer builds?

A: Yes. Voron 2.4, Voron Trident, and Voron 0 use M3 screws extensively for frame, panel, and component mounting. M3×5mm is used for thin panel and bracket mounting throughout the Voron build.

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