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Motherboard Standoffs & PC Screws Assortment Kit — HDD, SSD, Case & Mainboard Mounting
Complete assortment kit of motherboard standoffs and PC case screws for ATX, Micro-ATX, and Mini-ITX builds. Includes M3 brass standoffs, M3 screws, and 6#-32 UNC screws to cover all standard PC case mounting requirements — motherboard, hard drive, SSD, optical drive, and PSU installation.
Kit Contents Overview
| Component | Brass M3 hex standoffs, M3 Phillips screws, 6#-32 Phillips screws |
|---|---|
| Thread Standards | M3 metric + 6#-32 UNC imperial |
| Compatibility | ATX, Micro-ATX, Mini-ITX, E-ATX PC cases |
| Standoff Material | Brass (nickel-plated) |
| Screw Material | Steel (zinc-plated) |
Why Choose This Assortment Kit?
- Complete PC build coverage — M3 standoffs + M3 screws + 6#-32 screws covers all standard ATX case mounting points
- Brass standoffs — conductive for chassis grounding; standard for ATX motherboard mounting
- M3 + 6#-32 dual standard — M3 for motherboard/fan mounting; 6#-32 for PSU, HDD, and optical drive mounting
- Assortment kit — multiple sizes and quantities for complete build or workshop stock
- ATX/mATX/ITX compatible — fits all standard PC case form factors
Typical Applications
- ATX/mATX/Mini-ITX motherboard mounting (M3 brass standoffs + M3 screws)
- 3.5-inch HDD mounting in drive cage (6#-32 screws)
- 2.5-inch SSD mounting in bracket (M3 screws)
- ATX PSU mounting (6#-32 screws)
- Optical drive (CD/DVD/Blu-ray) chassis mounting (6#-32 screws)
- PC case fan mounting (M3 screws)
Compatible With
All standard ATX, Micro-ATX, Mini-ITX, and E-ATX PC cases. Compatible with motherboards from: ASUS, MSI, Gigabyte, ASRock, Intel, and all other ATX-standard motherboard manufacturers. HDD compatibility: Seagate, Western Digital, Toshiba (6#-32 side mounting holes). PSU compatibility: all ATX PSUs (Corsair, Seasonic, EVGA, be quiet!, Fractal Design).
FAQ
Q: How many standoffs do I need for a standard ATX motherboard?
A: Standard ATX motherboards use 9 mounting holes (9 standoffs + 9 M3 screws). Micro-ATX uses 6–9 holes; Mini-ITX uses 4 holes. Check your case and motherboard manual for the exact positions.
Q: What is the difference between M3 and 6#-32 screws?
A: M3 is metric (0.5mm pitch) used for motherboard, fan, and SSD mounting. 6#-32 is UNC imperial used for PSU, 3.5-inch HDD, and optical drive mounting. Both are used in the same ATX case — do not interchange them.
Package Contents
- Assortment of brass M3 hex standoffs, M3 Phillips screws, and 6#-32 Phillips screws (quantities per selected variant)


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