Furnace / AC control board mounts screw size
M5 · 8 to 16 mm long
The screws used on Furnace / AC control board mounts are M5 in lengths from 8 to 16 mm.
The record covers control board standoffs inside HVAC units.
This entry is marked reported.
For reference, M5 is 5 mm across the threads at 0.8 mm pitch. The imperial size people confuse it with: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
Furnace / AC control board mounts screw specifications
One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M5 | 8–16 mm | 0.8 mm | not stated | not stated | Control board standoffs inside HVAC units | Reported |
Fitment records and sources
Control board standoffs inside HVAC units
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Appliance panels often use self-tapping screws into sheet metal or plastic, and machine screws into nuts or inserts — keep each type where it came from.
- Diameter: across the threads an M5 screw measures about 5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.8 mm from one thread crest to the next (12.5 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 8–16 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M5 heads take PH2 for Phillips and T25 for Torx, and a 4 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- Tightening: no device-specific torque is published in these records. The site's general figure for M5 is about 4.0-6.0 N·m into metal threads and 1.5-2.5 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M5
- M5 is not a VESA size — it shows up in bikes, furniture and appliances, rarely on displays.
- The 'GoPro thread' is M5-0.8, a de facto standard on third-party mounts, and is not the imperial 1/4-20 tripod thread.
Buy these screws at TechSpare Warehouse
In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.
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M5 x 12mm Black Wafer Head Generator Cover Screws for Honda EM, EB, EG Generators & EU3200i (replaces 90102-Z21-000) – 10-Pack Replacement
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Devices whose records share a thread with Furnace / AC control board mounts, closest length match first.
- Huebsch commercial washer (Alliance Laundry Systems OEM part) also M5 × 8 mm
- Faucet handle set screws also M5 × 8–10 mm
- Johnson Controls M9000-520 linkage kit drive-shaft screw also M5 × 16 mm
- Dryer door handle also M5 × 12–16 mm
- Astoria/CMA espresso solenoid group head screw also M5 × 10 mm
- Unimac commercial washer (Alliance Laundry Systems OEM part) also M5 × 16 mm
- Vulcan-Hart Chef combi oven also M5 × 12 mm
- Astoria/CMA espresso solenoid group head (used in coffee kiosk equipment) also M5 × 10 mm
Questions about Furnace / AC control board mounts screws
- What size screw does Furnace / AC control board mounts use?
- M5 × 8–16 mm for control board standoffs inside HVAC units.
- How long are the screws in Furnace / AC control board mounts?
- The records range from 8 to 16 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M5 screw?
- 0.8 mm (coarse), which is the standard pitch for M5 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 4.2 mm and the normal clearance hole is 5.5 mm.
- What screwdriver do I need for Furnace / AC control board mounts?
- The sources do not name the drive. For M5, Phillips heads normally take PH2 and Torx heads T25; socket heads take a 4 mm hex key.
- Can I use an imperial screw instead of M5?
- No. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing. Use a true M5 screw so it does not cross-thread or strip the hole.