How long are the screws in Astoria/CMA espresso solenoid group head screw?

The record gives 10 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.

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 Astoria/CMA espresso solenoid group head screw?

The source lists a Hex socket (Allen) drive. Standard M5 heads otherwise take PH2 (Phillips) or T25 (Torx), or 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.

Astoria/CMA espresso solenoid group head screw screw size

M5 · 10 mm long

Our records put Astoria/CMA espresso solenoid group head screw on M5 screws, 10 mm long.

It is listed for espresso Parts sells an 'M5 x 10mm Allen Screw (UNI 9327 / DIN 7984)' used as standard fastener in CMA solenoid groups.

Head and drive, as the source states them: Hex socket (Allen) drive.

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

M5 means a 5 mm nominal diameter with a 0.8 mm thread pitch. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing.

Astoria/CMA espresso solenoid group head screw 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	10 mm	0.8 mm	not stated	Hex socket (Allen)	Espresso Parts sells an 'M5 x 10mm Allen Screw (UNI 9327 / DIN 7984)' used as standard fastener in CMA solenoid groups	Confirmed

Fitment records and sources

M510mmconfirmed

Espresso Parts sells an 'M5 x 10mm Allen Screw (UNI 9327 / DIN 7984)' used as standard fastener in CMA solenoid groups

pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25

Source

How to check the screw before you buy

Unplug the appliance and discharge any capacitors before removing covers.
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 record states 10 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
Driver: the source names a Hex socket (Allen) drive. For comparison, standard M5 heads take PH2 (Phillips) or T25 (Torx), or a 4 mm hex key.
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

Espresso/coffee-equipment M5 and M6 socket-head screws (DIN 7984/UNI 9327) are cross-brand standard fasteners shared across CMA, Astoria, and La Cimbali brewing-group hardware, so a single screw often services multiple manufacturers' machines.
Some scooters and appliances use self-tapping screws of similar diameter rather than true M5 machine threads.

Pitch gauge · Screw size finder · Torque guide

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 Astoria/CMA espresso solenoid group head screw, closest length match first.

Faucet handle set screws also M5 × 10 mm
Furnace / AC control board mounts also M5 × 10 mm
Dishwasher toe kick panel also M5 × 10 mm
Espresso portafilter basket spring also M5 × 10 mm
Astoria/CMA espresso solenoid group head (used in coffee kiosk equipment) also M5 × 10 mm
VMAC Multifunction Power System D600007 also M5 × 10 mm
HP Pavilion 4700 also M5 × 10 mm
19-inch rack cage nut (mid size) also M5 × 10 mm

Questions about Astoria/CMA espresso solenoid group head screw screws

What size screw does Astoria/CMA espresso solenoid group head screw use?: M5 × 10 mm for espresso Parts sells an 'M5 x 10mm Allen Screw (UNI 9327 / DIN 7984)' used as standard fastener in CMA solenoid groups.
How long are the screws in Astoria/CMA espresso solenoid group head screw?: The record gives 10 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
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 Astoria/CMA espresso solenoid group head screw?: The source lists a Hex socket (Allen) drive. Standard M5 heads otherwise take PH2 (Phillips) or T25 (Torx), or 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.

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