What is the ideal screw length for assembling 2x4's at a right angle (90 degrees)?

2 1/2 is the right length . make sure to adjust your jig first.

will it fit a 3/8 inch pocket hole?

The Kreg SML-S250B-50 will work with the standard Kreg 3/8" pocket hole.

Are these authentic from Kreg? When I compare the packaging they look different.

Yes, Pattern is an authorized seller for KREG on Amazon. We work closely with them and provide their new and authentic products on Amazon. If you would like further confirmation, please contact the brand directly at 1 (800)-447-8638. Please let us know if you ever have a problem with any of the products you buy on Amazon through Pattern. We are happy to help.

I tried to use these to join 2x6 boards but the screw tip comes through the opposing side I have the bit collar set to the proper depth. Any ideas?

Are you setting the depth at the shoulder or at the tip? I set at the shoulder and it works for me. Try putting the jig at 1-1/2 inches and then putting the bit in the jig and setting the collar so the bit almost touches the base of the jig. The object is to have the bit exit the first piece of wood at the center of the wood (3/4" from each side for 1-1/2 inch 2*4) scott vmtwcom

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Kreg SML-C250B-50 Blue Kote Pocket Screws, 2 1/2-Inch, Coarse Thread, Maxi-Loc Head (50 Count)

Kreg SML-C250B-50 Blue Kote Pocket Screws, 2 1/2-Inch, Coarse Thread, Maxi-Loc Head (50 Count)

Product ID: 114317734

Details

Exterior finish
Blue
Head style
Multi-Lobe
Item dimensions L x W x H
5.1 x 7.6 x
Material
Steel
Thread size
8

🔩2.5-inch coarse thread

⚙️Maxi-Loc multi-lobe head

🛡️3-layer Blue-Kote rust resistance

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Description

🔧 Nail your next project with screws that mean business!

EFFORTLESS DRIVING - Coarse threads combined with self-tapping, square drive technology reduce slipping and speed up your build time.
PRO GRADE RELIABILITY - Crafted from premium alloy steel, these screws deliver consistent strength and longevity for professional woodworking.
READY FOR ANY PROJECT - 50-count pack gives you the perfect quantity for small to medium projects, making sure you never run out mid-build.
PRECISION POCKET HOLE FIT - Maxi-Loc washer-head design ensures tight, secure joints that pull wood pieces flawlessly together without pilot holes.
RUST RESISTANT DURABILITY - 3-layer Blue-Kote finish protects your projects from moisture and corrosion, perfect for outdoor or treated lumber applications.

Kreg SML-C250B-50 Blue-Kote Pocket Screws are 2.5-inch coarse thread, self-tapping wood screws featuring a rust-resistant 3-layer Blue-Kote coating and Maxi-Loc multi-lobe washer heads. Designed for strong, precise pocket-hole joints without pilot holes, these 50-count screws are ideal for damp or treated lumber, delivering professional-grade durability and ease of use.

Specifications

ASIN	B001717PGI
Best Sellers Rank	62,161 in DIY & Tools ( See Top 100 in DIY & Tools ) 880 in Screws (DIY & Tools)
Brand Name	Kreg
Colour	No Color
Compatible Groove Diameter	0.38 Inches
Customer Reviews	4.8 4.8 out of 5 stars (1,612)
Drive System	Slotted
Exterior Finish	Blue
Fastener Size	No. 2
Fastener Type	self-tapping screws,wood screws
Finish Types	blue
Global Trade Identification Number	00647096415785
Head Type	Flat
Included Components	Kreg SML-C250B-50 Blue-Kote WR Pocket Screws 2-1/2-Inch, 8 Coarse, Washer-Head, 50-Count
Item Diameter	4 Millimetres
Item Dimensions	5.1 x 7.6 x 12.7 centimetres
Item Type Name	Pocket Screws 2-1/2-Inch, 8 Coarse, Washer-Head, 50-Count
Item Weight	0.47 Pounds
Manufacturer	Kreg Tool Inc
Manufacturer Part Number	SML-C250B-50
Material Type	Steel
Metal	Alloy Steel
Model Number	SML-C250B-50
Number Of Items	1
Number of Pieces	50
Outside Diameter	6.3 Centimetres
Screw Head Style	Multi-Lobe
Screw Point Style	Self-Drill Point
Set Name	Kreg Blue-Kote Pocket-Hole Screws - SML-C250B-50
Set Screw Thread Type	Coarse Thread
Size	No Size
Thread Class	1B
Thread Coverage	Fully Threaded
Thread Size	8
Thread Style	Right Hand
Thread Type	UNC
UPC	732233440918 647096415785 752913205224
Unit Count	50.0 count

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4540 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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