Modified Truss Head Phillips Self-Drilling Screw Zinc Plated
Zinc plated modified truss head drill-point screw for wide-bearing metal fixings.
This is the plain zinc plated drill-point truss head: a wide bearing crown over a point that cuts its own hole in steel. It is the version most people order in volume, with the colour-coated part reserved for fixings that stay in view.
Because the head bears rather than sinks, it suits assemblies where the screw passes through a softer outer layer into steel behind. The drill point handles the steel; the crown handles the soft layer.
Why buyers choose it
- Drill point and wide bearing head in one fastener
- Yellow, white or blue zinc plating, or phosphate, to match the assembly
- Shank M3.5 to M6.3, lengths 13 to 100 mm
- C1022 and 1022A carbon steel with heat treatment
Send the total steel thickness the point has to pass through, the head style and the exposure and the size will be confirmed against the closest standard before quoting. Samples of this item are free of charge.
Specification
| Shank Diameter | M3.5/M3.9/M4.2/M4.8/M5.5/M6.3 |
|---|---|
| Length | 13mm-100mm |
| Material | C1022, 1022A |
| Head Type | Truss head |
| Drive Type | Phillips |
| Finish | yellow/white/blue zinc plated, phosphated |
| Packing | 1. Bulk packing 25 kg in a carton or bag; 2. 1 kg in a box/bag, 25 boxes/bags in a carton, then pallet; 3. Count packs: 1000pcs/500pcs/250pcs per small box, then small boxes into cartons |
| Minimum Order | 500 kg |
| Payment | T/T, L/C |
Specification as published by Haiyan Ehons Industrial Co., Ltd.. Drill capacity is set by the point supplied; state the total steel thickness on the enquiry.
Technical detail
| Material | C1022 and 1022A carbon steel. |
|---|---|
| Shank diameter | M3.5, M3.9, M4.2, M4.8, M5.5 and M6.3. |
| Length | 13 mm to 100 mm. |
| Head and drive | Modified truss head with a Phillips drive. |
| Finish | Yellow, white or blue zinc plated, and phosphated. |
Problems this screw solves
Narrow heads mark thin sheet
A wide crown distributes the seating load and leaves the sheet flat around the fixing.
Two operations where one will do
The drill point removes the pre-drilling pass on light steel.
Plating colour has to match the job
Yellow, white and blue zinc are all available, so the fixing can be matched to the surrounding hardware.
Where it is used
- Fixing soft outer layers through to steel framing behind
- Metal-to-metal assembly where a small head would mark the sheet
- Bracket and accessory mounting on light steel structures
- Volume fixing work where colour coating is not required
Who buys it
Steel frame fabricators, HVAC and ducting installers, and general fabricators buying drill-point screws in container volume.
Quality control priorities
Two checks dominate this part: case hardness at the drill point after heat treatment, and plating thickness on the head and thread. A thin plating on the thread crest is where corrosion starts on an otherwise sound screw, so coating thickness is measured rather than assumed from bath time.
Customisation
Plating colour, point length and head diameter are all specifiable. For high-volume repeat orders the usual arrangement is an agreed specification sheet held against the part number so each call-off does not have to restate it.
How it compares
Against the colour-coated version
Same geometry; that one adds an applied colour finish for visible work at a higher unit cost.
Against the truss head tapping screw
Sharp point instead of drill point. Use the tapping version on pre-punched or very thin material.
Against a pan framing drill-point screw
Framing head is lower, truss head is wider. Choose by whether height or bearing area governs.
Installation notes
Drill before you tighten
Let the point complete the hole under steady pressure before the thread engages.
Do not exceed drill capacity
State the total steel thickness so the correct point is supplied.
Choose plating colour at order stage
Plating is applied in production and cannot be changed later.
Avoid mixed plating on one elevation
Yellow and clear zinc look different in daylight. Order one colour per visible run.
Frequently asked questions
What is the difference from the colour-coated truss head screw?
What plating colours are available?
What shank and length range do you offer?
What is the base material?
What is the minimum order quantity?
How is it packed for export?
Other screws buyers compare with this one
Modified Truss Head Phillips Self-Drilling Screw Colour Coated
Colour-coated modified truss head drill-point screw for visible fixings on metal.
View specification
Pan Framing Head Phillips Self-Drilling Screws
Drill-point pan framing screw for steel-to-steel framing in heavier gauges.
View specification
Hex Washer Head Self-Drilling Screw with EPDM Washer
Roofing and cladding screw with a bonded EPDM sealing washer and #2 or #3 drill point.
View specificationQuote modified truss head phillips self-drilling screw zinc plated
Packed 1. Bulk packing 25 kg in a carton or bag; 2. 1 kg in a box/bag, 25 boxes/bags in a carton, then pallet; 3. Count packs: 1000pcs/500pcs/250pcs per small box, then small boxes into cartons. Minimum order 500 kg for this item.