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M3–M6 304 Stainless Steel Hex Socket Low Profile Head Cap Screws A2-70
M3–M6 304 Stainless Steel Hex Socket Low Profile Head Cap Screws A2-70
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M3–M6 304 Stainless Steel Hex Socket Low Profile Head Cap Screws — A2-70
Low profile hex socket cap screws (also called button socket head or thin head cap screws) provide the torque and security of a hex socket drive in a head height approximately 40–50% lower than a standard ISO 4762 socket head cap screw. This makes them the correct choice wherever vertical clearance is limited — such as under PCBs, inside slim electronics enclosures, or in robotics joints where a standard cap head would foul adjacent components.
Key Specifications
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel |
| Grade | A2-70 |
| Drive | Hex socket (Allen) |
| Head Style | Low profile / thin head cap |
| Thread Type | Metric machine thread (ISO) |
| Size Range | M3, M4, M5, M6 |
| Standard | ISO 14580 / DIN 6912 |
Why Choose Low Profile Cap Screws?
- Reduced head height — DIN 6912 low profile head is ~40% thinner than standard ISO 4762; fits in tight clearance applications impossible for standard cap screws
- Hex socket drive — higher torque than Phillips or slotted; no cam-out; works with standard Allen keys and hex bit drivers
- A2-70 304 stainless — corrosion-resistant for electronics, robotics, and outdoor enclosures
- Machine thread — requires pre-tapped hole or nut; provides precise, repeatable clamping force
- M3–M6 range — covers all standard electronics and mechanical assembly sizes
Typical Applications
- PCB mounting where head clearance below board is limited
- Slim electronics enclosure assembly (aluminium extrusion, sheet metal)
- Robotics joint and servo bracket assembly with tight clearance
- 3D printer linear rail and carriage mounting (MGN9, MGN12 rails)
- CNC machine axis and gantry assembly
- Aluminium extrusion T-slot assembly (2020, 3030, 4040 profiles)
Compatible With
- Allen keys / hex bit drivers: M3=2mm, M4=2.5mm, M5=3mm, M6=4mm hex
- Pre-tapped holes or hex nuts / nyloc nuts M3–M6
- Aluminium extrusion T-slot nuts (M3, M4, M5, M6)
- Linear rail mounting: MGN9 (M3), MGN12 (M3/M4), MGN15 (M4/M5)
Package Contents
- Low profile cap screws in selected size and quantity (per variant)
Frequently Asked Questions
- Q: What is the head height of a low profile cap screw compared to standard?
- A: DIN 6912 low profile: M3=1.5mm, M4=2.0mm, M5=2.5mm, M6=3.0mm head height. Standard ISO 4762: M3=3mm, M4=4mm, M5=5mm, M6=6mm. Low profile heads are exactly half the height of standard cap screws.
- Q: Do these require a pre-tapped hole?
- A: Yes. These are machine thread screws and require either a pre-tapped hole or a nut. They are not self-tapping. Use an M3–M6 tap or pair with a hex nut, nyloc nut, or T-slot nut.
- Q: What hex key size do I need?
- A: M3 requires 2mm hex; M4 requires 2.5mm hex; M5 requires 3mm hex; M6 requires 4mm hex. These are standard metric hex key sizes.
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M3–M6 304 Stainless Steel Hex Socket Low Profile Head Cap Screws — A2-70
Low profile hex socket cap screws (also called button socket head or thin head cap screws) provide the torque and security of a hex socket drive in a head height approximately 40–50% lower than a standard ISO 4762 socket head cap screw. This makes them the correct choice wherever vertical clearance is limited — such as under PCBs, inside slim electronics enclosures, or in robotics joints where a standard cap head would foul adjacent components.
Key Specifications
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel |
| Grade | A2-70 |
| Drive | Hex socket (Allen) |
| Head Style | Low profile / thin head cap |
| Thread Type | Metric machine thread (ISO) |
| Size Range | M3, M4, M5, M6 |
| Standard | ISO 14580 / DIN 6912 |
Why Choose Low Profile Cap Screws?
- Reduced head height — DIN 6912 low profile head is ~40% thinner than standard ISO 4762; fits in tight clearance applications impossible for standard cap screws
- Hex socket drive — higher torque than Phillips or slotted; no cam-out; works with standard Allen keys and hex bit drivers
- A2-70 304 stainless — corrosion-resistant for electronics, robotics, and outdoor enclosures
- Machine thread — requires pre-tapped hole or nut; provides precise, repeatable clamping force
- M3–M6 range — covers all standard electronics and mechanical assembly sizes
Typical Applications
- PCB mounting where head clearance below board is limited
- Slim electronics enclosure assembly (aluminium extrusion, sheet metal)
- Robotics joint and servo bracket assembly with tight clearance
- 3D printer linear rail and carriage mounting (MGN9, MGN12 rails)
- CNC machine axis and gantry assembly
- Aluminium extrusion T-slot assembly (2020, 3030, 4040 profiles)
Compatible With
- Allen keys / hex bit drivers: M3=2mm, M4=2.5mm, M5=3mm, M6=4mm hex
- Pre-tapped holes or hex nuts / nyloc nuts M3–M6
- Aluminium extrusion T-slot nuts (M3, M4, M5, M6)
- Linear rail mounting: MGN9 (M3), MGN12 (M3/M4), MGN15 (M4/M5)
Package Contents
- Low profile cap screws in selected size and quantity (per variant)
Frequently Asked Questions
- Q: What is the head height of a low profile cap screw compared to standard?
- A: DIN 6912 low profile: M3=1.5mm, M4=2.0mm, M5=2.5mm, M6=3.0mm head height. Standard ISO 4762: M3=3mm, M4=4mm, M5=5mm, M6=6mm. Low profile heads are exactly half the height of standard cap screws.
- Q: Do these require a pre-tapped hole?
- A: Yes. These are machine thread screws and require either a pre-tapped hole or a nut. They are not self-tapping. Use an M3–M6 tap or pair with a hex nut, nyloc nut, or T-slot nut.
- Q: What hex key size do I need?
- A: M3 requires 2mm hex; M4 requires 2.5mm hex; M5 requires 3mm hex; M6 requires 4mm hex. These are standard metric hex key sizes.
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