app-dat/openpnp-dat/PixiePlacer-dat/PixiePlacer-Frame-dat/PixiePlacer-Frame-dat.md
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@@ -78,7 +78,7 @@ Alu_L_Bracket == Joint Board Plate Corner Angle Bracket Connection Joint Strip
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Alu_Angle == 2020 Aluminium Corner Bracket
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-- [[Alu_Extrusion-dat]] - [[T-nut-dat]]
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+- [[Alu_Extrusion-dat]] - [[T-nut-dat]] - [[screws-dat]]
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### y axis
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mechanics-dat/belt-dat/belt-dat.md
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@@ -3,3 +3,6 @@
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GT2_Belt_6mm
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+## ref
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+
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+- [[belt]]
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\ No newline at end of file
mechanics-dat/screws-dat/2025-03-13-18-03-58.png
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Binary files /dev/null and b/mechanics-dat/screws-dat/2025-03-13-18-03-58.png differ
mechanics-dat/screws-dat/screws-dat.md
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@@ -4,19 +4,27 @@
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- M3x10
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- M5x10
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-## the types of the head of screws
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+## Head Types
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### Round head
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+6. Round Head
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+Name: Round Head Screw
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+Description: Fully rounded top, offering a decorative or smooth finish.
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+Usage: Less common in screws but used in vintage or decorative applications.
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+
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+
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### Pan head
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Pan Head Screws M3*6, note length is the screws part
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![](2025-03-07-17-10-00.png)
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-M5*10 pan head
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+4. Pan Head
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+Name: Pan Head Screw
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+Description: Rounded, slightly raised head with a large diameter.
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+Usage: Common in electronics, sheet metal fastening, and general applications.
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-![](2025-03-11-16-36-15.png)
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### Countersunk Head
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@@ -26,7 +34,116 @@ Countersunk Head M3*6, note length is the total length
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![](2025-03-07-17-11-52.png)
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-### Hex Head
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+### Hex Head / socket head
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+
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+![](2025-03-13-18-03-58.png)
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+
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+### Button Head
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+
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+M5*10 pan head
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+
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+![](2025-03-11-16-36-15.png)
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+
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+2. Button Head (Socket Button Head Screw)
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+Name: Button Head Screw
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+Description: Low-profile, rounded head with a wide bearing surface.
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+Usage: Used when a smooth, low-profile finish is needed, such as in enclosures or furniture.
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+
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+
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+### Cap Head
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+
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+1. Cap Head (Socket Cap Screw)
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+Name: Cap Head Screw
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+Description: Tall, cylindrical head with a deep hex socket.
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+Usage: High-strength fastening in machinery, automotive, and structural applications.
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+
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+### Flat Head
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+
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+3. Flat Head (Countersunk Head Screw)
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+Name: Flat Head Screw
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+Description: Tapered, countersunk head that sits flush with the surface.
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+Usage: Used in applications requiring a smooth, flush surface, such as aerospace or furniture.
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+
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+### Low Head
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+
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+5. Low Head
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+Name: Low Head Screw
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+Description: Similar to cap head but with a reduced height for tight spaces.
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+Usage: Used in applications where clearance is limited but a strong connection is needed.
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+
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+### Truss Head
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+
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+7. Truss Head
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+Name: Truss Head Screw
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+Description: Extra-wide, low-profile head for better load distribution.
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+Usage: Used in thin materials like sheet metal or plastic to reduce material damage.
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+
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+### Oval Head
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+
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+8. Oval Head (Raised Countersunk Head Screw)
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+Name: Oval Head Screw
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+Description: Similar to a flat head but with a slightly domed top.
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+Usage: Decorative applications or when a smooth, elegant look is needed.
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+
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+## Drive Types
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+
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+
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+Screws can be categorized based on their **drive type**, which refers to the shape of the socket or recess in the screw head where the tool engages.
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+
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+### 1. Hex Drive (Allen)
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+- **Common Names:** Hex Socket, Allen
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+- **Description:** A hexagonal socket that requires a hex key (Allen wrench).
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+- **Usage:** Used in machinery, furniture, and automotive applications for high torque fastening.
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+
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+### 2. Phillips Drive (Cross)
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+- **Common Names:** Phillips, Cross Recess
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+- **Description:** A cross-shaped recess designed to prevent over-tightening.
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+- **Usage:** Widely used in general-purpose applications, especially in wood and drywall screws.
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+
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+### 3. Slotted Drive
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+- **Common Names:** Slot, Flathead
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+- **Description:** A single straight groove that uses a flat-blade screwdriver.
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+- **Usage:** Common in older designs, electrical outlets, and light-duty applications.
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+
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+### 4. Torx Drive
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+- **Common Names:** Torx, Star
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+- **Description:** A six-pointed star-shaped recess that provides high torque transfer and reduces cam-out.
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+- **Usage:** Used in electronics, automotive, and aerospace applications.
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+
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+### 5. Pozidriv Drive
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+- **Common Names:** Pozidriv, PZ
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+- **Description:** Similar to Phillips but with extra grooves for better torque and less slippage.
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+- **Usage:** Common in European woodworking and electrical applications.
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+
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+### 6. Square Drive (Robertson)
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+- **Common Names:** Robertson
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+- **Description:** A square-shaped recess that offers strong torque resistance and prevents cam-out.
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+- **Usage:** Used in construction, woodworking, and some automotive applications.
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+
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+### 7. Tri-Wing Drive
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+- **Common Names:** Tri-Wing
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+- **Description:** Three-winged recess designed for security screws.
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+- **Usage:** Found in aerospace, electronics, and tamper-proof applications (e.g., Nintendo consoles).
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+
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+### 8. Spanner Drive (Snake Eye)
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+- **Common Names:** Spanner, Snake Eye, Twin-Hole
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+- **Description:** Two small round holes on the head requiring a special spanner bit.
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+- **Usage:** Used in security screws to prevent tampering in public spaces.
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+
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+### 9. One-Way Drive
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+- **Common Names:** One-Way, Security Slot
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+- **Description:** Slotted design that allows installation but prevents removal.
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+- **Usage:** Used in security applications like restroom fixtures and license plates.
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+
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+### 10. Hexalobular Drive (Torx Plus)
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+- **Common Names:** Torx Plus, 6-Lobe
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+- **Description:** A refined version of Torx with a more precise shape for higher torque.
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+- **Usage:** Found in automotive, aerospace, and industrial applications.
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+
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+### 11. Clutch Drive
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+- **Common Names:** Clutch Head
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+- **Description:** Bowtie-shaped recess used in heavy machinery.
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+- **Usage:** Found in buses, trailers, and some older appliances.
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