Electro Hardware - Male-Male Hex Circuit Board Standoff: M3 x 0.5

50 Pcs PC Case PCB Motherboard Brass Standoff Hexagonal Spacer M3 9+4mm

ZENHOSIT 300Pcs M2/M3 Hex Head Brass Standoff Spacer Screws Threaded Pillar Male/Female Electric PCB Circuit Board Stand Off Kit - AliExpress

Electro Hardware - Female Hex Circuit Board Standoff: M3.5 x 0.6, 12 mm OAL, 6 mm Width Across Flats - 13000252 - MSC Industrial Supply

Renishaw - CMM Standoff: 10 mm, M6 Thread, Steel - 31241029 - MSC Industrial Supply

Standoff Spacer Stud Fastener M3 Brass Hex Spacer Standoff - Brass Hex Male Female - Aliexpress

M3 Male-Female Stainless Steel Hex Column Standoff Support Spacer for PCB Board

Electro Hardware - Male-Female Hex Circuit Board Standoff: M3 x 0.5, 4.5 mm Width Across Flats - 77124212 - MSC Industrial Supply

M2/m3 Hex Head Brass Standoff Spacer Screws - Electric Pcb Circuit Board

Electro Hardware - Male-Female Hex Circuit Board Standoff: M3 x 0.5, 4.5 mm Width Across Flats - 77121200 - MSC Industrial Supply