100mm Black Drywall Screws Coarse Thread (500/Box)
Black drywall screws coarse thread (100mm) with bugle head. Ideal for fixing plasterboard to timber studs. Suitable for heavy-duty applications requiring exceptional penetration through multiple board layers.
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Product Overview
Black drywall screws coarse thread (100mm) with bugle head. Ideal for fixing plasterboard to timber studs. Suitable for heavy-duty applications requiring exceptional penetration through multiple board layers.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
| Screws & Fixings and Adhesives & Sealants | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £10 ex. VAT |
| Over £300 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{engineering}} Compatible with a standard Phillips bit for easy installation
- {{fitness_center}} Coarse thread provides superior holding strength
- {{call_split}} Sharp point reduces wood splitting
- {{straighten}} Allows for a flush finish
Technical Specification
| Product: | Coarse Thread |
|---|---|
| Material Type: | Carbon Steel |
| Length: | 100mm |
| Box Quantity: | 500 |
| Sales Unit: | Box |
| Colour: | Black |
| Collated: | No |
| Diameter: | 4.8mm |
| Head Type: | Bugle |
| Indoor/Outdoor Usage: | Indoor |
| Drive Type: | Phillips |
| Thread Type: | Coarse |
| Thread Length: | Fully Threaded |
Product Overview
100mm Black Drywall Screws for heavy-duty applications requiring exceptional penetration through multiple board layers. Each screw is manufactured from hardened carbon steel with a black phosphate coating that provides light corrosion resistance and a clean, low-glare finish.
The bugle head ensures a smooth, flush seating without tearing the board’s paper surface, achieving a professional, ready-to-fill finish.
A sharp W-type gimlet point allows easy penetration and rapid engagement into timber, reducing driving effort. The coarse thread is optimised for wood substrates, delivering strong bite and resistance to pull-out in natural grain.
100mm heavy-duty long fixings for deep board assemblies and heavy timber frameworks.
Features & Benefits
- Material: Hardened carbon steel for strength and consistent driving torque.
- Corrosion resistance: Black phosphate coating resists rust and oxidation under dry interior conditions.
- Head design: Bugle head compresses gypsum and paper for a flush surface finish.
- Thread type: Coarse W-type thread offers fast drive and secure grip in timber.
- Point type: Sharp gimlet point ensures quick starting and reduced splitting.
- Nominal size: 100mm length.
- Box quantity: Supplied in a box of 500 for efficient coverage of high-volume projects.
Applications
- Multi-layer drywall assemblies: Ideal for extra-deep wall systems.
- Timber framing and joists: Strong hold for reinforced wall and ceiling structures.
- Heavy partition walls: Reliable fixing through deep substrate layers.
Installation Guidance
- Drive type: Use a Phillips No.2 bit for controlled installation.
- Speed setting: Drive at medium speed to avoid over-countersinking.
- Depth control: Seat screw head just below the paper surface without rupturing.
- Spacing: Maintain 250mm centres on walls and 150mm on ceilings.
Compliance & Performance
- Manufacturing reference: Produced in accordance with EN 14566 for drywall screws.
- Finish: Black phosphate coating provides corrosion protection for interior use.
- Safety: Always wear eye protection and ensure stable support when driving.
- Important note: Not suitable for exterior or high-moisture environments.
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