HBM VKK1-4A load cell junction box screw size
M4 / M5 · 10 to 20 mm long
Our records put HBM VKK1-4A load cell junction box on M4 and M5 screws in lengths from 10 to 20 mm.
There are 2 separate fitment records for it, including housing fastening screws, DIN 84, min 20mm long (M4) and grounding screw (DIN 84) (M5).
2 of the 2 records are marked confirmed, drawn from 1 source (hbm.com).
M4 means a 4 mm nominal diameter with a 0.7 mm thread pitch. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
HBM VKK1-4A load cell junction box 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 |
|---|---|---|---|---|---|---|
| M4 | 20 mm | 0.7 mm | not stated | not stated | housing fastening screws, DIN 84, min 20mm long | Confirmed |
| M5 | 10 mm | 0.8 mm | not stated | not stated | grounding screw (DIN 84) | Confirmed |
Fitment records and sources
housing fastening screws, DIN 84, min 20mm long
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
grounding screw (DIN 84)
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- If several screws hold the same part, check that they are all the same length before assuming they are.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). This device also uses M5, so measure each screw rather than assuming they match.
- Pitch: 0.7 mm from one thread crest to the next (14.29 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 10–20 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 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 M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4 / M5
- Grounding-lug screws on Siemens and Beckhoff gear (M4) are earth hardware, not structural mounting screws — don't reuse them to hold a module.
- Grounding/earth-stud screws on hazardous-area (ATEX/IECEx) gas detectors are commonly M4 even though the enclosure body uses larger threaded glands — don't extrapolate the earth screw size to the whole unit.
- Stacking frame + rack tab + fender stay needs 18-20mm bolts, not the 12-16mm that come with a cage.
- M5x0.8 is the de facto universal bike thread — confirm 0.8mm pitch before threading into carbon or alloy bosses.
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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Devices whose records share a thread with HBM VKK1-4A load cell junction box, closest length match first.
- DIN 912 socket-head cap screw also M4 × 20 mm
- DIN 965 / ISO 7046 countersunk Phillips screw also M4 × 20 mm
- LG 47LK530 also M4 × 20 mm
- Christie HS / Jazz Series UST lens bracket also M4 × 20 mm
- LG 42LK530 also M4 × 20 mm
- Carbide3D Shapeoko 5 Pro CNC router also M4 × 20 mm
- HP ProBook 6440b also M5 × 10 mm
- LG 47LV3700 also M4 × 20 mm
Questions about HBM VKK1-4A load cell junction box screws
- What size screw does HBM VKK1-4A load cell junction box use?
- M4 × 20 mm for housing fastening screws, DIN 84, min 20mm long; M5 × 10 mm for grounding screw (DIN 84).
- How long are the screws in HBM VKK1-4A load cell junction box?
- The records range from 10 to 20 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M4 screw?
- 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
- What screwdriver do I need for HBM VKK1-4A load cell junction box?
- The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
- Can I use an imperial screw instead of M4?
- No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.