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Maedler worm gear motor HMD/II gearbox size 045 square output flange screw size

M6 · length not stated in the sources

Our records put Maedler worm gear motor HMD/II gearbox size 045 square output flange on M6 screws. None of the sources we found gives an exact length, so measure the original before you order.

Where it is used: product page for the square-shaped output flange (PN 43904300) explicitly lists 'Bolts (No. x Size): 4 x M6' for mounting the flange to the worm gear motor housing.

This entry is marked confirmed and comes from maedlernorthamerica.com.

M6 means a 6 mm nominal diameter with a 1 mm thread pitch. Imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.

Maedler worm gear motor HMD/II gearbox size 045 square output flange 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.

ThreadLengthPitchHeadDriveWhere it goesStatus
M6not stated1 mmnot statednot statedProduct page for the square-shaped output flange (PN 43904300) explicitly lists 'Bolts (No. x Size): 4 x M6' for mounting the flange to the worm gear motor housingwasher / flange faceConfirmed

Fitment records and sources

M6not specified (bolt count/size only)confirmed

Product page for the square-shaped output flange (PN 43904300) explicitly lists 'Bolts (No. x Size): 4 x M6' for mounting the flange to the worm gear motor housing

pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30

How to check the screw before you buy

  1. If several screws hold the same part, check that they are all the same length before assuming they are.
  2. 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.
  3. 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.
  4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
  5. 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.
  6. 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

  • UR cobot flange bolts are commonly sold/quoted as 'M6 bolts' but the required length depends on the tool thickness; UR's own guidance is bolt class M6-8.8 to ISO4762 without a fixed length, so length must be selected per adapter/tool stack-up, not assumed as a fixed mm value.
  • 19-inch racks are not all metric: 10-32 and 12-24 UNC are still the norm in North America, with M6 the metric/square-hole cage-nut option.

Pitch gauge · Screw size finder · Torque guide

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Questions about Maedler worm gear motor HMD/II gearbox size 045 square output flange screws

What size screw does Maedler worm gear motor HMD/II gearbox size 045 square output flange use?
M6 for product page for the square-shaped output flange (PN 43904300) explicitly lists 'Bolts (No. x Size): 4 x M6' for mounting the flange to the worm gear motor housing.
How long are the screws in Maedler worm gear motor HMD/II gearbox size 045 square output flange?
None of the sources states a length. Remove one screw and measure it from under the head to the tip (overall for a countersunk head).
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 Maedler worm gear motor HMD/II gearbox size 045 square output flange?
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.