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Model #103101

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#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

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BrandGrip-RiteGRK FastenersGRK FastenersGRK 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 Length2-1/2 in2-1/2 in4 in3-1/8 in
Size#8#9#10#10
Drive StylePhillipsStarStarStar
Head StyleBugle HeadBugle HeadBugle HeadBugle Head
Fastener/Connector MaterialSteelSteelSteelSteel
Interior/ExteriorExteriorExterior,InteriorExterior,InteriorExterior,Interior
View ProductView ProductView ProductView 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, 2021
0
Answers

Can this be used with pressure treated wood

Asked by NormanChiza April 19, 2021
1
Answer

Yes, 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, 2020
2
Answers

You 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, 2020
0
Answers

Can these be used on stucco for ledger panels

Asked by MV May 2, 2020
2
Answers

No, 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, 2020
2
Answers

Yes 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, 2018
2
Answers

It 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, 2018
3
Answers

Absolutely. 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, 2017
5
Answers

Yes, 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, 2016
6
Answers

T25

#9 x 2-1/2 in. Star Drive Bugle Head R4 Multi-Purpose Screw (100-per Pack) - page 2

Customer Reviews

  • 5
    out of 195 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 195 reviews
Used this to build a new stand for an aquarium in my living room. Has everything locked in place ...
Used this to build a new stand for an aquarium in my living room. Has everything locked in place very well. Very solid.
by SteveP
1 person found this helpful
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
3 people found this helpful
Screws worked well, no splitting of wood.
Screws worked well, no splitting of wood.
by Brewer01
1 person found this helpful
by 1803
by DENNY
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
The best screws ever.
The best screws ever.
by Jb
Awesome screws recommend...
Awesome screws recommend
by HomeDepotCustomer
Great screws cuts in to material fast....
Great screws cuts in to material fast.
by Perez
Be screw you could ever have. If you want to...
Be screw you could ever have. If you want to never end up screwed on job use these.
by GRK
Showing 1-10 of 195 reviews