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Window Fabrication Screws Countersunk with Ribs PH Self-Tapping Thread Self-Drilling Point Martensitic Stainless Steel Silver Organic (1000 pcs)

3.9 x 16mm Window Fabrication Screws - Countersunk - Martensitic Stainless Steel & Silver Organic (Box Of 1000) - 121SS

£55.94 ex. VAT £46.62

Features and Benefits:

🔩 Self-Drilling Point + Self-Tapping Thread — drills into steel or aluminium reinforcement and cuts its own threads in one step
⏺ Countersunk Head with Ribs — ensures flush finish under hardware and better countersinking grip
🛡 Martensitic Stainless Steel Material — ideal for use in corrosive or outdoor environments
✨ Silver Organic Coating — attractive metallic finish with extra corrosion resistance
🏗 Perfect for Reinforced Frames — engineered for use with frames containing steel/aluminium reinforcement

Description:
These window fabrication screws deliver exceptional performance when mounting hardware onto reinforced frames. The self-drilling point allows piercing of steel or aluminium without needing a pilot hole, while the self-tapping thread secures the material firmly. The countersunk head, enhanced with ribs, ensures a clean, flush installation under hinges, handles, or locking mechanisms. Constructed from martensitic stainless steel and finished in silver organic coating, these screws resist corrosion in damp or harsh environments. Designed especially for window fabricators, glaziers, and installers working with PVC, aluminium or composite frames reinforced internally, these fasteners combine reliability with a professional aesthetic.

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Delivery Fee:
- £3.79 delivery for orders under £30
- Free delivery for orders over £30
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- 2:30pm
Delivery Time: Before 6pm Monday-Friday

Next Business Day Delivery

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- £7.50
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Delivery Time: Before 6pm Monday-Friday

Pre-12 Next Business Day Delivery

Delivery Fee: £16.99 delivery for all pre-12 orders (Weekend Only)
Order By:
- 2:30pm
Delivery Time: Before 12pm Monday-Friday

Remote Areas Delivery

Delivery Fee:
- £3.99
Order By:
- 2:30pm
Delivery Time: Standard delivery (2-4 days)

Weekend Delivery

Delivery Fee:
- £19.99
Order By:
- 2:30pm Friday
Delivery Time: Before 6pm Saturday

Good To Know

For orders to some addresses, especially in the Highlands of Scotland and Offshore, next day delivery options are not available and delivery can take several days. Saturday delivery is not available for remote areas.

Items over 30kg: Items over 30kg can only be delivered from Monday to Friday. If ordered before 3pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.

Window Fabrication Screws Countersunk with Ribs PH Self-Tapping Thread Self-Drilling Point Martensitic Stainless Steel Silver Organic (1000 pcs)

Frequently bought together

Window Fabrication Screws Countersunk with Ribs PH Self-Tapping Thread Self-Drilling Point Martensitic Stainless Steel Silver Organic (1000 pcs)

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£0.09

500x M12 301 Stainless Steel Single Coil Square Spring Washers

£23.50

Total price:

Free delivery on orders over £30
30-day easy returns
Download datasheet (PDF)

BRAND: TIMCO

Window Fabrication Screws Countersunk with Ribs PH Self-Tapping Thread Self-Drilling Point Martensitic Stainless Steel Silver Organic (1000 pcs)

Name: Window Fabrication Screws Countersunk with Ribs PH Self-Tapping Thread Self-Drilling Point Martensitic Stainless Steel Silver Organic (1000 pcs)
Brand: TIMCO
SKU: 121SS
Price: 56.66 GBP
Availability: InStock

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£56.66 inc VAT

£47.22 ex VAT

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Frequently bought together

Window Fabrication Screws Countersunk with Ribs PH Self-Tapping Thread Self-Drilling Point Martensitic Stainless Steel Silver Organic (1000 pcs)

£56.66

1x M12 FORM A FLAT WASHER DIN 125 A2 Stainless Steel 304

£0.09

500x M12 301 Stainless Steel Single Coil Square Spring Washers

£23.50

Total price:

Features and Benefits:

🔩 Self-Drilling Point + Self-Tapping Thread — drills into steel or aluminium reinforcement and cuts its own threads in one step
⏺ Countersunk Head with Ribs — ensures flush finish under hardware and better countersinking grip
🛡 Martensitic Stainless Steel Material — ideal for use in corrosive or outdoor environments
✨ Silver Organic Coating — attractive metallic finish with extra corrosion resistance
🏗 Perfect for Reinforced Frames — engineered for use with frames containing steel/aluminium reinforcement

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Pre 12 Delivery

Next working day, by midday

All orders: £16.99

Pre 10.30 Delivery

Next working day, by 10:30am

All orders: £19.99

Weekend Delivery

Saturday & Sunday

Orders under £30: £13.99
Orders over £30: £7.50

Remote Areas Delivery

Highlands, islands & remote postcodes

Orders under £30: £5.49
Orders over £30: £3.00

Orders before 2pm Mon–Fri dispatch same day. Remote-area surcharges apply to Highlands, islands & selected postcodes. All prices include VAT.

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Frequently bought together

Window Fabrication Screws Countersunk with Ribs PH Self-Tapping Thread Self-Drilling Point Martensitic Stainless Steel Silver Organic (1000 pcs)

Frequently bought together

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