Johnson Controls PENN VFD68 Variable Frequency Drive, largest terminal block size screw size
M6 · 12 mm long
Our records put Johnson Controls PENN VFD68 Variable Frequency Drive, largest terminal block size on M6 screws, 12 mm long.
It is listed for table of Torque Specifications for VFD68Dxx Drives explicitly lists an M6 terminal screw size entry for the highest-capacity drive terminals.
This entry is marked confirmed and comes from docs.johnsoncontrols.com.
For reference, M6 is 6 mm across the threads at 1 mm pitch. The imperial size people confuse it with: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
Johnson Controls PENN VFD68 Variable Frequency Drive, largest terminal block size 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 |
|---|---|---|---|---|---|---|
| M6 | 12 mm | 1 mm | not stated | not stated | Table of Torque Specifications for VFD68Dxx Drives explicitly lists an M6 terminal screw size entry for the highest-capacity drive terminals | Confirmed |
Fitment records and sources
Table of Torque Specifications for VFD68Dxx Drives explicitly lists an M6 terminal screw size entry for the highest-capacity drive terminals
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- Check whether the mount uses a VESA pattern or a vendor bracket before buying screws.
- Diameter: across the threads an M6 screw measures about 6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 1 mm from one thread crest to the next (10 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 record states 12 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M6 heads take PH3 for Phillips and T30 for Torx, and a 5 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 M6 is about 7-10 N·m into metal threads and 2.5-4.0 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M6
- Manual explicitly warns that under-tightening this M6 hinge screw can let the door glass crash into the drum, so torque compliance matters more than just thread match.
- VESA thread scales with the hole pattern, not the screen size: Parts B-E take M4, Part F jumps to M6 (and M8 on the largest) - a frequent field mistake.
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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Questions about Johnson Controls PENN VFD68 Variable Frequency Drive, largest terminal block size screws
- What size screw does Johnson Controls PENN VFD68 Variable Frequency Drive, largest terminal block size use?
- M6 × 12 mm for table of Torque Specifications for VFD68Dxx Drives explicitly lists an M6 terminal screw size entry for the highest-capacity drive terminals.
- How long are the screws in Johnson Controls PENN VFD68 Variable Frequency Drive, largest terminal block size?
- The record gives 12 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M6 screw?
- 1 mm (coarse), which is the standard pitch for M6 machine screws; a 0.75 mm fine pitch exists but is uncommon. The tap drill is 5 mm and the normal clearance hole is 6.6 mm.
- What screwdriver do I need for Johnson Controls PENN VFD68 Variable Frequency Drive, largest terminal block size?
- The sources do not name the drive. For M6, Phillips heads normally take PH3 and Torx heads T30; socket heads take a 5 mm hex key.
- Can I use an imperial screw instead of M6?
- No. Imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6. Use a true M6 screw so it does not cross-thread or strip the hole.