Martin MAC 500 moving head fixture screw size
M2 / M3 / M4 / M6 · 3 to 25 mm long
The screws used on Martin MAC 500 moving head fixture are M2, M3, M4 and M6 in lengths from 3 to 25 mm.
There are 4 separate fitment records for it, including spare parts list includes M2 x 3mm screws (P/N 360066) in fixture assembly (M2), service parts list: M3 x 6, 8, 12 and 20mm black screws plus M3 x 6 countersunk (M3) and M4 x 5, 6, 10, 12, 16 and 25mm screws including taptites and countersunk unbraco (M4), plus 1 more in the table below.
Head and drive, as the sources state them: flat / countersunk head and Hex socket (Allen) drive.
4 of the 4 records are marked confirmed, drawn from 1 source (adn.harmanpro.com).
M2 means a 2 mm nominal diameter with a 0.4 mm thread pitch. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Martin MAC 500 moving head fixture 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 |
|---|---|---|---|---|---|---|
| M2 | 3 mm | 0.4 mm | not stated | not stated | Spare parts list includes M2 x 3mm screws (P/N 360066) in fixture assembly | Confirmed |
| M3 | 6–20 mm | 0.5 mm | Flat / countersunk | not stated | Service parts list: M3 x 6, 8, 12 and 20mm black screws plus M3 x 6 countersunkblack finish | Confirmed |
| M4 | 5–25 mm | 0.7 mm | Flat / countersunk | not stated | M4 x 5, 6, 10, 12, 16 and 25mm screws including taptites and countersunk unbracoself-tapping / thread-forming | Confirmed |
| M6 | 10 mm | 1 mm | not stated | Hex socket (Allen) | M6 x 10mm unbraco (hex socket) bolt, P/N 360080 | Confirmed |
Fitment records and sources
Spare parts list includes M2 x 3mm screws (P/N 360066) in fixture assembly
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Service parts list: M3 x 6, 8, 12 and 20mm black screws plus M3 x 6 countersunk
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
M4 x 5, 6, 10, 12, 16 and 25mm screws including taptites and countersunk unbraco
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
M6 x 10mm unbraco (hex socket) bolt, P/N 360080
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- Instrument and audio hardware often threads into wood or thin metal; a screw that is too long can poke through a finished surface.
- Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). This device also uses M3 / M4 / M6, so measure each screw rather than assuming they match.
- Pitch: 0.4 mm from one thread crest to the next (25 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: the source describes a countersunk (flat) head, and those are measured overall, from the top of the head to the tip.
- The records span 3–25 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Hex socket (Allen) drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M2 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2 / M3 / M4 / M6
- Most consumer gadget teardowns (robot vacuums, toothbrushes, e-readers, VR headsets) list only the driver bit, not the thread — measure before ordering.
- Power-tool gearcase and clamshell screws are usually thread-forming (marked "ST") even when the parts list gives an M-size — a normal machine screw of the same size may not hold in the plastic boss.
- US-made pinball machines (Williams/Bally/Stern) overwhelmingly use imperial UTS threads (#6-32, #8-32, #10-32); explicit metric threads only appear on newer/import components such as Jersey Jack Pinball's Hobbit Smaug assembly (M3).
- 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.
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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The same screw also fits
Devices whose records share a thread with Martin MAC 500 moving head fixture, closest length match first.
- Allparts metric bridge length screws also M3 × 15 mm
- Martin MAC 2000 Performance also M4 × 8 mm
- Accordion reed blocks also M3 × 12 mm
- Drum hardware wing bolt / memory lock also M4 × 10–20 mm
- Woodwind post-to-body mounting also M2 × 3 mm
- Fender/Squier import Stratocaster & Jazzmaster bridge also M3 × 6–10 mm
- Speaker driver to baffle also M4 × 12–20 mm
- Fender Standard Series bass bridge also M3 × 10 mm
Questions about Martin MAC 500 moving head fixture screws
- What size screw does Martin MAC 500 moving head fixture use?
- M2 × 3 mm for spare parts list includes M2 x 3mm screws (P/N 360066) in fixture assembly; M3 × 6–20 mm for service parts list: M3 x 6, 8, 12 and 20mm black screws plus M3 x 6 countersunk; M4 × 5–25 mm for M4 x 5, 6, 10, 12, 16 and 25mm screws including taptites and countersunk unbraco; M6 × 10 mm for M6 x 10mm unbraco (hex socket) bolt, P/N 360080.
- How long are the screws in Martin MAC 500 moving head fixture?
- The records range from 3 to 25 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M2 screw?
- 0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
- What screwdriver do I need for Martin MAC 500 moving head fixture?
- The source lists a Hex socket (Allen) drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- Can I use an imperial screw instead of M2?
- No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Martin MAC 500 moving head fixture?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M3 x 6mm and M3 x 8mm, which match lengths in the records above.