SMA Sunny Boy 3.0-US to 7.7-US inverter screw size
M5 · 16 to 60 mm long
If you are replacing a screw on SMA Sunny Boy 3.0-US to 7.7-US inverter, the thread is M5 in lengths from 16 to 60 mm.
There are 2 separate fitment records for it, including mounting bracket cylindrical screw (M5) and inverter to wall bracket screw (M5).
2 of the 2 records are marked confirmed, drawn from 1 source (files.sma.de).
An M5 screw is 5 mm in diameter with a 0.8 mm pitch, tapped with a 4.2 mm drill; imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
SMA Sunny Boy 3.0-US to 7.7-US inverter 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 | 60 mm | 0.8 mm | not stated | not stated | mounting bracket cylindrical screw | Confirmed |
| M5 | 16 mm | 0.8 mm | not stated | not stated | inverter to wall bracket screw | Confirmed |
Fitment records and sources
mounting bracket cylindrical screw
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
inverter to wall bracket screw
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Board standoffs and enclosure bosses set the usable length: the screw should clamp the board without bottoming in the standoff.
- 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 16–60 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
- M5x0.8 is the de facto universal bike thread — confirm 0.8mm pitch before threading into carbon or alloy bosses.
More in Electronics, Racks & Enclosures
The same screw also fits
Devices whose records share a thread with SMA Sunny Boy 3.0-US to 7.7-US inverter, closest length match first.
- Tektronix RM5 rackmount kit (5/6 Series MSO) also M5 × 16 mm
- Wheelchair armrest and footrest brackets also M5 × 16 mm
- EcoFlow Power Kits Power Hub wall/RV mounting hardware also M5 × 16 mm
- E-scooter fenders & kickstands also M5 × 16 mm
- Rowing machine rail brackets also M5 × 16 mm
- Rittal DK 7094130 19-inch rack assembly screw for components and blanking plates also M5 × 16 mm
- Badger Meter M5000 Remote Junction Box Kit also M5 × 16 mm
- Rack and fender eyelets also M5 × 16 mm
Questions about SMA Sunny Boy 3.0-US to 7.7-US inverter screws
- What size screw does SMA Sunny Boy 3.0-US to 7.7-US inverter use?
- M5 × 60 mm for mounting bracket cylindrical screw; M5 × 16 mm for inverter to wall bracket screw.
- How long are the screws in SMA Sunny Boy 3.0-US to 7.7-US inverter?
- The records range from 16 to 60 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 SMA Sunny Boy 3.0-US to 7.7-US inverter?
- 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.