BT2 Button Head Cap Self Tapping Screw (BHCS)

Documentation Specification 3D Model Product ID L (mm) Bolt Length D (mm) Head Diameter H (mm) Head Thickness k (mm) Hexagon Across Flats t (mm) Groove Depth Screwdriver Bit Size AA212 4 3.5 1.3 1.3 0.6 H1.3 AA213 5 3.5 1.3 1.3 0.6 H1.3 AA128 6 3.5 1.3 1.3 0.6 H1.3 AA129 8 3.5 1.3 1.3 0.6 H1.3 AA214 10 3.5 1.3 1.3 0.6 H1.3 AA130 12 3.5 1.3 1.3 0.6 H1.3 AA215 14 3.5 1.3 1.3 0.6 H1.3 AA131 16 3.5 1.3 1.3 0.6 H1.3 AA216 18 3.5 1.3 1.3 0.6 H1.3 AA132 20 3.5 1.3 1.3 0.6 H1.3 AA133 25 3.5 1.3 1.3 0.6 H1.3 AA134 30 3.5 1.3 1.3 0.6 H1.3   .pct_hardware-tableList-t-icpc { padding: '0 20px' } .pct_hardware-tableList { width: 100%; row-gap: 15px !important; column-gap: 15px !important; } .pct_hardware-tableList .pct_ic-p { overflow: hidden; } .pct_hardware-tableList .pct_st-tbc .pct_tb .pct_td { border-color: #ADADAD; } @media (min-width: 640px) { .pct_hardware-tableList-t-icpc { padding: 0px !important } .pct_hardware-tableList { width: 100%; row-gap: 15px; column-gap: 15px; } .pct_hardware-tableList .pct_st-tbc .pct_tb .pct_td { height: 50px; } } Forgot the screw specs? Just tap the Screw Gauge for sorting help. Self-Tapping Screws for 3D Printing For 3D printed parts, which often have gaps between layers and varying hole sizes, we recommend using BT self-tapping screws. These screws provide moderate torque for insertion, prevent loosening, and can be installed and removed multiple times. Using these screws and matching them with the recommended hole size ensures easy and secure connections for your printed parts, eliminating the need for nuts and avoiding issues like screw loosening or hole shrinkage. We have included the relevant data for the twisting torque and loosening torque experiments of PLA and PETG material specimens, as well as the recommended hole sizes for design. The model files for testing are available for download at the end of the details page. All test holes are printed perpendicularly to the platform. When designing a bolt bottom hole on the side of the part, it is recommended to use a size one size larger than the recommended size for lying flat to prevent interlayer compression cracking.     .pct_downloadContent .download_svg { width: 30px; } @media (min-width: 640px) { .pct_downloadContent .download_svg { width: 55px; } } Test Data for Self-Tapping Screws 3D Document for Screws Test   .pct_hardware-tableList-t-icpc { padding: '0 20px' } .pct_hardware-tableList { width: 100%; row-gap: 15px !important; column-gap: 15px !important; } .pct_hardware-tableList .pct_ic-p { overflow: hidden; } .pct_hardware-tableList .pct_st-tbc .pct_tb .pct_td { border-color: #ADADAD; } @media (min-width: 640px) { .pct_hardware-tableList-t-icpc { padding: 0px !important } .pct_hardware-tableList { width: 100%; row-gap: 15px; column-gap: 15px; } .pct_hardware-tableList .pct_st-tbc .pct_tb .pct_td { height: 50px; } } Basic Information Surface Treatment Black zinc-nickel alloy plating Mounting Hole Shape Hex socket Screw Type Complete thread Material Carbon steel Thread Ridge Type Metric coarse Color Black   .pct_productFeatureList { display: flex; justify-content: flex-start; align-items: center; flex-wrap: wrap; column-gap: 50px; row-gap: 5px; } .pct_productFeatureList li { padding: 0; } @media (min-width: 640px) { .pct_productFeatureList { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; column-gap: 50px; row-gap: 0px; } } Product Feature Self-Tapping Screws for 3D Printing Carbon Steel Button Head Cap Self Tapping Screw (BHCS) Nominal thread: BT2~BT3 Strength grade: 4.8 Type of thread: Metric coarse thread Full thread series