Thread-Forming Screws for Thin Plastic
M4 Screw Size, 16 mm Long, 8 mm Flange Diameter, T20 Torx
Drive Style | Torx |
Fastener Head Type | Rounded/Flanged |
Tip Type | Blunt |
Tapping Method | Thread Forming |
Rounded Head Style | Pan |
Material | Zinc-Plated Steel |
Screw Size | M4 |
Length | 16 mm |
Head Height | 2.6 mm |
Flange Diameter | 8 mm |
Tapping Screw Type Designation | TRS |
Drive Size | T20 |
Drill Bit Size | 45 Ga. |
Shank Cross Section | Round |
Approximate Thread Pitch | 1.79 mm |
Drill Bit Decimal Size Equivalent | 0.082" |
For Use In | Plastic |
Rounded Head Profile | Wide |
System of Measurement | Metric |
Thread Direction | Right Hand |
Threading | Fully Threaded |
Country of Origin | United States, Canada, China, Germany, India, Italy, Japan, Mexico, Taiwan, Thailand, Vietnam |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (02/04/2026, 253 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731814.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
With a flange under the head, these screws distribute pressure to prevent denting or pulling through holes in plastic. Their threads have a narrow angle to drive into drive into ABS, PVC, and polycarbonate without cracking or discoloring the material. The Torx drive ensures a good grip with less slip than slotted, Phillips, square, or hex drives. These screws have a rounded head to create a finished look.
Length is measured from under the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Round—The sharply angled threads drive into plastic with less force and a lower risk of cracking than other tapping screws. The base of the threads is recessed to bite deep into material and hold tight. You can reuse these screws a few times without stripping the threads. They're comparable to PT screws.
Prepare hole
The information in this 3-D model is provided for reference only.