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M1–M4 Black Carbon Steel Phillips Pan Head Screw Bolt GB818 Small Round Head
M1–M4 Black Carbon Steel Phillips Pan Head Screw Bolt GB818 Small Round Head
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$2.64 USD
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M1–M4 Black Carbon Steel Phillips Pan Head Screw Bolt — GB818 Small Round Head
GB818 black carbon steel Phillips pan head screws are the standard miniature fastener for electronics assembly, precision devices, and PCB mounting where a black finish is required. Available from M1 — the smallest standard metric thread — through M4, these screws cover the full range of miniature and small electronics assembly applications at an economical price point.
Key Specifications
| Parameter | Value |
|---|---|
| Material | Carbon Steel |
| Finish | Black oxide |
| Drive | Phillips (cross head) |
| Head Style | Pan head (round head) |
| Size Range | M1, M1.2, M1.4, M1.6, M2, M2.5, M3, M4 |
| Thread Type | Machine thread (metric) |
| Standard | GB818 |
Why Choose GB818 Black Pan Head Screws?
- Miniature M1–M4 range — covers the smallest standard metric threads for precision instruments, cameras, and miniature electronics
- Black oxide finish — professional black appearance for dark electronics builds; light corrosion resistance for indoor use
- Pan head profile — standard round head with good bearing surface; suitable for most electronics and mechanical assembly applications
- GB818 standard — Chinese national standard equivalent to ISO 7045 / DIN 7985; widely specified in electronics manufacturing
- Economical — carbon steel construction provides cost-effective fastening for high-volume electronics assembly
Typical Applications
- PCB mounting and electronics enclosure assembly (M2–M3)
- Precision instrument and optical equipment assembly (M1–M2)
- Toy and model assembly (M1.4–M3)
- Consumer electronics repair (M1.6–M3)
- Miniature robotics and servo bracket mounting (M2–M4)
- Camera body and lens assembly (M1–M2.5)
Compatible With
- Phillips screwdrivers: #000 (M1–M1.6), #00 (M2–M2.5), #0 (M2.5–M3), #1 (M3–M4)
- Pre-tapped holes or hex nuts M1–M4
- Nylon, brass, and aluminium standoffs M2–M4
Package Contents
- GB818 pan head screws in selected size, length, and quantity (per variant)
Frequently Asked Questions
- Q: Is the black oxide finish rust-proof?
- A: Black oxide provides light corrosion resistance suitable for dry indoor environments. It is not suitable for outdoor, marine, or high-humidity applications. For those environments, choose 304 stainless steel variants.
- Q: What is the smallest screw size available?
- A: The smallest size is M1 (1mm diameter), suitable for miniature precision instruments, camera assemblies, and miniature electronics. Use a #000 Phillips screwdriver for M1 and M1.2 screws.
- Q: What is the GB818 standard?
- A: GB818 is the Chinese national standard for cross-recessed (Phillips) pan head machine screws, equivalent to ISO 7045 and DIN 7985. It specifies head dimensions, thread tolerances, and mechanical properties for metric pan head screws.
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M1–M4 Black Carbon Steel Phillips Pan Head Screw Bolt — GB818 Small Round Head
GB818 black carbon steel Phillips pan head screws are the standard miniature fastener for electronics assembly, precision devices, and PCB mounting where a black finish is required. Available from M1 — the smallest standard metric thread — through M4, these screws cover the full range of miniature and small electronics assembly applications at an economical price point.
Key Specifications
| Parameter | Value |
|---|---|
| Material | Carbon Steel |
| Finish | Black oxide |
| Drive | Phillips (cross head) |
| Head Style | Pan head (round head) |
| Size Range | M1, M1.2, M1.4, M1.6, M2, M2.5, M3, M4 |
| Thread Type | Machine thread (metric) |
| Standard | GB818 |
Why Choose GB818 Black Pan Head Screws?
- Miniature M1–M4 range — covers the smallest standard metric threads for precision instruments, cameras, and miniature electronics
- Black oxide finish — professional black appearance for dark electronics builds; light corrosion resistance for indoor use
- Pan head profile — standard round head with good bearing surface; suitable for most electronics and mechanical assembly applications
- GB818 standard — Chinese national standard equivalent to ISO 7045 / DIN 7985; widely specified in electronics manufacturing
- Economical — carbon steel construction provides cost-effective fastening for high-volume electronics assembly
Typical Applications
- PCB mounting and electronics enclosure assembly (M2–M3)
- Precision instrument and optical equipment assembly (M1–M2)
- Toy and model assembly (M1.4–M3)
- Consumer electronics repair (M1.6–M3)
- Miniature robotics and servo bracket mounting (M2–M4)
- Camera body and lens assembly (M1–M2.5)
Compatible With
- Phillips screwdrivers: #000 (M1–M1.6), #00 (M2–M2.5), #0 (M2.5–M3), #1 (M3–M4)
- Pre-tapped holes or hex nuts M1–M4
- Nylon, brass, and aluminium standoffs M2–M4
Package Contents
- GB818 pan head screws in selected size, length, and quantity (per variant)
Frequently Asked Questions
- Q: Is the black oxide finish rust-proof?
- A: Black oxide provides light corrosion resistance suitable for dry indoor environments. It is not suitable for outdoor, marine, or high-humidity applications. For those environments, choose 304 stainless steel variants.
- Q: What is the smallest screw size available?
- A: The smallest size is M1 (1mm diameter), suitable for miniature precision instruments, camera assemblies, and miniature electronics. Use a #000 Phillips screwdriver for M1 and M1.2 screws.
- Q: What is the GB818 standard?
- A: GB818 is the Chinese national standard for cross-recessed (Phillips) pan head machine screws, equivalent to ISO 7045 and DIN 7985. It specifies head dimensions, thread tolerances, and mechanical properties for metric pan head screws.
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