SKU: 12373242779

JG Timberfast Structural Screw Green Flush Head 6.3mm

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Description

JG Timberfast Structural Screw Green Flush Head 6.3mmJG Timberfast structural screws in 6. 3mm diameter offer a flush Torx head design built for timber frame construction, decking, and outdoor structural fixing. The green corrosion resistant coating makes them suitable for use with treated timber and exposed environments across all standard applications. Specifications Property Detail Brand JG Timberfast Nominal Diameter 6. 3mm Available Lengths 75mm, 100mm, 125mm, 150mm Drive Type Torx (flush head)

JG Timberfast structural screws in 6.3mm diameter offer a flush Torx head design built for timber frame construction, decking, and outdoor structural fixing. The green corrosion-resistant coating makes them suitable for use with treated timber and exposed environments across all standard applications.

Specifications

Property Detail
Brand JG Timberfast
Nominal Diameter 6.3mm
Available Lengths 75mm, 100mm, 125mm, 150mm
Drive Type Torx (flush head)
Head Profile Flush / countersunk
Coating / Finish Green corrosion-resistant coating
Suitable For Treated and untreated structural timber

What it's used for

  • Timber frame construction and structural joinery connections
  • Decking board fixing and subframe assembly
  • Fencing components including rails, posts, and gravel boards
  • General outdoor carpentry where a flush, neat finish is required

Fitting and handling

The Torx drive reduces cam-out during installation, which is useful when fixing at pace through hardwoods or dense treated timber. No pre-drilling is required in most softwood applications, but pilot holes are recommended in hardwood or close to timber edges to prevent splitting. Store unused screws in a dry location, as the green coating is corrosion-resistant rather than fully rustproof in prolonged standing water.

FAQ

Are these screws suitable for use with pressure-treated timber?

Yes. The green coating on JG Timberfast 6.3mm structural screws is designed to resist the corrosive chemicals found in modern pressure-treated and tanalised timber, making them a practical choice for outdoor structural work.

What Torx bit size do I need for 6.3mm Timberfast screws?

JG Timberfast 6.3mm screws typically require a T30 Torx bit. Check the specific product packaging to confirm, as drive sizes can vary between batches or product ranges.

Which length should I choose for decking boards?

For standard 32mm or 38mm decking boards fixed to a softwood joist, the 100mm length is a common choice, giving good pull-through resistance without over-penetrating the joist. For thicker boards or where greater structural load is expected, the 125mm or 150mm options provide additional holding strength.

Pair these screws with structural and decking timber from our decking collection at Nottage Timber Merchants. We supply trade and retail customers across Bridgend and South Wales, with next-day delivery available to many local areas.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 12373242779

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4.2 ★★★★★
Based on 19 reviews
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Verified Purchase
C. H.
Whiting, US
★★★★★ 5
Great value for the price, highly recommend
Color: Dogwood & Calming, Size: Medium
Our dog loves these and chews them down to nothing. They are a great value for the money and the use your dog gets out of them. The size is just right for our doberdor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
L
Verified Purchase
LC
Phoenix, US
★★★★★ 3
Our dog loves it but it wasn’t durable enough to last
Color: Dogwood Jack, Size: Large, Color: Dogwood Jack, Size: Large
Our lab took to it as soon as we gave it to her. Perfect size for our 80 lb yellow lab. However, now that it’s in about 10 days, she’s able to break off chunks from this bone that are dime size or larger, and we have to throw it away
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Reviewed in the United States on May 1, 2026
M
Verified Purchase
Matthew Anderson
Los Angeles, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
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Reviewed in the United States on February 18, 2026
T
Verified Purchase
terlynn4
Chelsea, US
★★★★★ 5
Long lasting and safer alternative to sticks
Color: Dogwood & Calming, Size: Medium
These are great, very durable, and have lasted a very long time. Much safer for my dogs than the random sticks they find in the yard. They do get shorter with chewing eventually, but they don't break off in little chunks like I've seen with some nylon chews, and they don't splinter like wood. Medium size works well for both my 16 lb Cavalier and my 60 lb Pyrenees/Golden mix. They're both moderate-to-aggressive chewers, though size obviously affects how much damage they can do. I wish you could buy the hemp chew separately because that one is very much a favorite in my house, so after 2 years and 2 purchases, I have barely any left of the remaining hemp chew, but still 2 of the dogwood chews that neither dog is as interested in anymore. I'd love to buy a couple more of just the hemp one.
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Reviewed in the United States on April 30, 2026
S
Verified Purchase
Shannon Brace
Houston, US
★★★★★ 5
Your dog will thank you.
Color: Dogwood & Fresh Breath, Size: Large
My dogs loves to chew on these. They make a small mess but not as bad as other chews. They are food for keeping teeth clean.
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Reviewed in the United States on May 31, 2026

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