ZX81 Cases, Screws, and Feet
https://www.zebrasystems.com/NY/index.php/technical-notes/zx81-case-parts
https://www.manualslib.com/manual/1934677/Sinclair-Zx81.html?page=9#manual
AI answer to ZX81 screw size
- Thread Size: 2.5mm
- Length: 10mm
- Head Type: Pan Head (also known as round head)
- Drive Type: Pozi (Pozidriv)
- Material: Stainless Steel (18-8 / 304)
- Finish: Matte Black.
What Are 1A, 2A, and 3A Fastener Threads?
https://wilsongarner.com/difference-between-1a-2a-3a-fastener-threads/
https://www.mutant-caterpillar.co.uk/shop/product_info.php?products_id=4586
This ad has an excellent photo of the original ZX81 screws and replacement screws he sells.
Brand new suitable replacement screws for Sinclair ZX81.
Set contains 7 screws:
- 3 long black screws for the case
- 4 short silver screws for the motherboard/case
- 5mm x 10mm Polyfix 45° Thread Profile - Pozi Pan Head Screws - Black Stainless Steel (18-8 / 304)
Accu Product Code (APC): SPP45-2.5-10-A2-BL
https://accu-components.com/us/plastite-45-pozi-pan-head-screws/164538-SPP45-2-5-10-A2-BL
M1 M1.2 M1.4 M1.7 M2 M2.2 M2.6 M3 M3.5 M4 M5 M6 Micro Small 304 stainless steel Cross Phillips Pan Round Head Self tapping Screw