8g (4.20mm) G410 Stainless Pan Post Torx (T20) Coarse Metal Self Drilling Security Screws
$5.00
In stock
SKU
08PPTS818_configurable
- Pan Head Security Screws is a tamper resistant self drilling screw design to be used into metal. It has a Post Torx drive which is extremely difficult to install and remove without the matching tool. The ideal security screw to protect and prevent unauthorised removal. Post Torx Drive is a five lobe design with a solid post (pin) in the centre of the recess to provide increased resistance to tampering. Commonly used to when fixing into metal. Self drilling point designed for fast driving into light gauge sheeting, cladding panels, sections and assemblies with the added bonus of a security drive
- Installation: Easy to install with a T20 Post Torx insert or power driver bit using a drill driver power tool. We recommend not to use an Impact driver due to the nature and design of the drive and the action of an impact drill
- Material / Coating: Excellent grade for due to its hardness. Grade 410 is a martensitic stainless steel and so can be hardened by heat treatment (which Austenitic types 304 and 316 cannot be). For this reason, it has excellent drilling properties – however 410 has lower corrosion resistance than grade 304 and should not be used in highly or even moderately corrosive environments or tea-staining will result
- What does TPI stand for?: TPI stands for “threads per inch” which literally means the number of threads within each inch on a screw, a bolt, or a fastener. To determine the TPI of a screw, count the number of threads contained within an inch of length on the fastener. If the screw is less than an inch count ½” of an inch and multiply by 2
- Length of Thread: Always choose a self driller with enough threads to fully engage in the base metal. For attachments to 1/4" base steel, a self-drilling screw should have at least 1/4" of threads. It is helpful, but not critical, that the threads also engage in the material being fastened. The head of the fastener provides the bearing force for the material being fastened, while the threads provide the clamping force in the base material
- Drill Point Style: A twist drill style hardened point for fast driving into light gauge sheeting, cladding panels, sections and assemblies. The length of the drilling flutes determine the amount of drilling swaft that can be expelled and therefore the depth of metal can be drilled
- Need a Driver Bit?: A large range of suitable driver bits are available in the "Driving" section of our website
- Measurements: Every effort has been made to ensure all measurements on our site are accurate and to the relevant standard, they should only be used as a guide. If you see a problem with our specifications please contact us
- Dimensions: Our stock is sourced from various suppliers, therefore differences may exist between batches such as height, width, visible stamped markings, appearance or actual finish
- Photos: are of the product but may not be the actual diameter, length, thread length, colour you require, always refer to the size in the description and additional specifications data provided prior to ordering
- Updating our site: If you see any problems with any of our specifications or you require additional information please contact us
- Disclaimer: Technical data and specifications were researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and Bolt and Nut Australia is not responsible for any loss, claim or damages arising therefrom. In developing this information, Bolt and Nut Australia has made a determined effort to present it accurately
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| System of Measurement | Screw Gauge |
|---|---|
| Product | Self Drilling Metal Screw |
| Head Type | Pan Head |
| Size | 8g (4.20mm) |
| Thread Pitch | 18 TPI |
| Thread Direction | Right Hand |
| Thread Type | Coarse |
| Corrosion Protection Level | Very Good |
| Class / Grade | G410 |
| Material | Stainless Steel |
| Product Diameter (d) | 4.00 - 4.20mm |
| Head Diameter (a) | 7.70 - 8.10mm |
| Screw Length (l) | Length measurement is from under head to end of drill point |
| Head Height (h) | 2.82mm |
| Drill Point Length (p) | 5.75mm |
| Min to Max Steel Thickness | 0.75 - 2.50mm |
| Drive Size | T20 |
| Screw Point | Drill Point |
| Drive Type | Post (Pin) Torx |
| Single Shear (kN) | 5.8 |
| Axial Tensile (kN) | 6.5 |
| Torsional (Nm) | 5.9 |
| Recommended Drill Speed | Under 3000 rpm |
| Closest size in mm | 4.20mm |
| Closest size in imperial | 0.17" |
| Brand | Tower |