#9 x 2-1/2 in. Star Drive Bugle Head R4 Multi-Purpose Screw (100-per Pack)
- Faster Drive for Improved Productivity
- Fast Bite Tip provides a fast start for one-step installation
- For interior / exterior use
- See More Details
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Product Overview
GRK's R4 Self Countersinking screw has 6 self-contained cutting pockets which act like a router and transport the drill dust away from the edge of the screw hole. They also widen the countersink hole only around the head shape. The screw head top closes the hole exactly, leaving no damaged fibers around the wider area of the head.
- For use in wood, particle-board, cement fiberboard, plastic, sheet metal
- Self-tapping
- No pre-drilling
- No stripped heads
- Common project applications: remodeling, fencing, storage, cabinets, framing
- Note: product may vary by store
Info & Guides
Compare Similar Wood Screws
Top Rated | |  |  | |
| Brand | Grip-Rite | GRK Fasteners | GRK Fasteners | GRK Fasteners |
| Name | #9 x 2-1/2 in. Philips Bugle-Head Coarse Thread Sharp Point Polymer Coated Exterior Screws (1 lb./Pack) | #9 x 2-1/2 in. Star Drive Bugle Head R4 Multi-Purpose Screw (100-per Pack) | #10 x 4 in. R4 Self-Countersinking Flat-Head Multi-Purpose Screw (50 per Pack) | #10 x 3-1/8 in. Star Drive Bugle Head R4 Multi-Purpose Wood Screw (70-Pack) |
| Price | ||||
| Ratings | (639) | (194) | (137) | (134) |
| Screw Length | 2-1/2 in | 2-1/2 in | 4 in | 3-1/8 in |
| Size | #8 | #9 | #10 | #10 |
| Drive Style | Phillips | Star | Star | Star |
| Head Style | Bugle Head | Bugle Head | Bugle Head | Bugle Head |
| Fastener/Connector Material | Steel | Steel | Steel | Steel |
| Interior/Exterior | Exterior | Exterior,Interior | Exterior,Interior | Exterior,Interior |
| View Product | View Product | View Product | View Product |
Compare Similar Wood Screws
| Top Rated | | | | |
| Brand | Grip-Rite | GRK Fasteners | GRK Fasteners | GRK Fasteners |
| Name | #9 x 2-1/2 in. Philips Bugle-Head Coarse Thread Sharp Point Polymer Coated Exterior Screws (1 lb./Pack) | #9 x 2-1/2 in. Star Drive Bugle Head R4 Multi-Purpose Screw (100-per Pack) | #10 x 4 in. R4 Self-Countersinking Flat-Head Multi-Purpose Screw (50 per Pack) | #10 x 3-1/8 in. Star Drive Bugle Head R4 Multi-Purpose Wood Screw (70-Pack) |
| Price | ||||
| Ratings | (639) | (194) | (137) | (134) |
| Screw Length | ||||
| Size | ||||
| Drive Style | ||||
| Head Style | ||||
| Fastener/Connector Material | ||||
| Interior/Exterior | ||||
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
Screw Length
2-1/2 in
Thread Pitch
0
Details
Color Family
Yellow
Drive Style
Star
Fastener Plating
Polymer
Fastener Type
Wood Screw
Fastener/Connector Material
Steel
Features
ACQ Rated,Coated,Self Drilling,Self Tapping
Finish
Climatek coating
Finish Family
Yellow
Head Style
Bugle Head
Included
Driver Bit
Interior/Exterior
Exterior,Interior
Materials Fastened
Wood to Wood
Measurement Standard
SAE
Package Quantity
100
Product Weight (lb.)
0.01 lb
Returnable
90-Day
Size
#9
Warranty / Certifications
Manufacturer Warranty
No
Questions & Answers
11Questions23Answers
Can i use these to secure a deck to a house?
Asked by J1 May 9, 20210
AnswersCan this be used with pressure treated wood
Asked by NormanChiza April 19, 20211
AnswerYes, these fasteners are coated with the GRK Climatek coating that is approved for use in pressure treated lumber.
Can these be used for pocket holes?
Asked by JCL June 30, 20202
AnswersYou can getaway with it,but, the pocket hole but leaves the hole flush which helps the washer of pocket screw.grk is conical
Do they make fasteners that cannot be removed once installed
Asked by TJ June 14, 20200
AnswersCan these be used on stucco for ledger panels
Asked by MV May 2, 20202
AnswersNo, these are wood screws.
Are #9 screws ideal size for 2x4? I am new to DIY projects and wood working in general
Asked by HomeDepotCustomer January 16, 20202
AnswersYes they work great, but ideal depends on your project. Remember screws are not designed for framing, they are a harder metal than nails and are somewhat brittle and can break easily, they will not flex as a nail would. But as a general fastener they do work very well, they start very easy and have a very good grip. I have used them to pull a twisted or warped 2×4 straight followed with a couple 3 1/2 framing nails.
Can this screw be used for plywood sheathing for exterior walls?
Asked by ruminir November 21, 20182
AnswersIt can be used for any wood to wood fastening task, but I would suggest a somewhat shorter length unless there is some factor I am unaware of in your situation.
How well to they stand up to corrosion? Do they have a corrosion warranty?
Asked by neilfcars February 10, 20183
AnswersAbsolutely. I use them for outdoor furniture, decks and fences. They never stain the wood like some types of screws.
Can these screws be used in framing as in sheds and small portable type cabins? I used them on a ...
Asked by Poetrkc February 7, 20175
AnswersYes, but I would choose to use a screw that has a head that will NOT chew it's way down through the wood. Screws without that chewing feature will tend to pull two pieces of wood more tightly together. The GRK fasteners seem to result in loosely-attached joins.
What's the size of the Torx bit?
Asked by BobC46 June 10, 20166
AnswersT25
Customer Reviews
May 3, 2018
I really like these screws and consider them to be well worth the extra money. The star drive tip...
I really like these screws and consider them to be well worth the extra money. The star drive tip never slips or comes out of the screw while it is being driven, nor does the screw head ever become damaged or stripped. This is a wonderful thing after a lifetime of struggling with phillips head screws. Note that you do not have to press down with all your might to keep the tip engaged as you often do with phillips head screws; you just hold the drill and let the screw do most of the work.
by John
May 3, 2021
GRK screws in general and these #9 2.5” long screws...
GRK screws in general and these #9 2.5” long screws are my 1st choice for most of my DIY wood-related projects, especially those involving 2x4’s.
They have superior bite when starting to drive in the piece and do a great job funneling the debris. Rarely ever need to pre-drill with them which is a huge plus when rushed for time. Work so well you need to be cautious that you don’t actually plunge through the board.
by HandyMan
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