Nylon standoffs are useful for permanently mounting circuit boards or to serve as feet. F/F standoffs accept screws from both ends.
Non-conductive with female/female M4 threads
Fans & Hardware Archives - ProtoSupplies
Standoff - Nylon (4-40; 3/4; 10 pack) - PRT-11796 - SparkFun
Our standoff screws are widely used in computers, computer cases, circuit board assembly, electronic fields, etc. The PCB standoffs play a supporting,
M4 Nylon Hex Standoff Screws Nuts, 50Pack PCB Threaded Kit(30mm+5mm, Black)
Spacers and Standoffs - J C Gupta & Sons
1x Standoff set. Model Number.
Nylon Hex Standoff Assortment Kit Male/Female Plastic Screws Nuts M2-M4 Spacer
Non-conductive 6mm long with M3 threads
Nylon Hex Standoff F-F M3x6mm (10-Pack)
Spacers and Standoffs - J C Gupta & Sons
ProtoSupplies
Standoff M3 Aluminium Hex 5mm x 30mm Black (4 Pack) - ImpulseRC
YOKIVE 15 Pcs M4 Spacers, Brass Hex PCB Standoffs Nuts, Keep