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Product Details

High Speed Steel Countersinks are excellent for cutting wood, plastics and metal. They are available with included angle of 60, 82, 90, 100 or 120 degrees. 82 degrees is the Standard size unless otherwise requested.

The four-blade construction have shorter, more rugged blades to reduce breakage and are designed to Countersink in metals and hardwoods. They are adjustable up and down on twist drills and are held in place by two hex-socket set screws which tighten into the flute of the drill.

Tech Specs
Part NumberCutting DiameterDrill Hole SizeOverall Length
H3S1/43/323/4
H4S5/167/643/4
H5S3/81/87/8
H6S3/89/647/8
H7S3/85/327/8
H8S3/811/647/8
H9S3/83/167/8
H913S3/813/647/8
H97S3/87/327/8
H10S7/1613/647/8
H125S1/25/327/8
H92S1/23/167/8
H102S1/213/647/8
H12S1/27/327/8
H14SW1/21/47/8
H143S5/83/161-1/16
H16S5/81/41-1/16
H169S5/89/321-1/16
H18SW5/85/161-1/16
H244S3/41/41-1/8
H245S3/45/161-1/8
H24S3/43/81-1/4
H285S7/85/161-1/4
H286S7/83/81-1/4
H287S7/87/161-3/8
H328S11/21-1/2

Reviews for Type H High Speed Steel Countersinks

2 of 2 Reviews

September 25, 2020

Perfect Flush Countersink
By Tom Blake Surfboard from Suffolk County, NY

Verified Purchase

I needed to predrill 100 holes for installing #6×¾" silicon bronze wood screws. The design required a flush mount, not too deep or too shallow. This super sharp countersink, along with the matching depth stop collar, provided the required predrill. It was a bit tricky to lock the stop collar as it kept shifting when tightening the set screws. The flutes in the countersink are at an angle to the cutting edge. I finally removed the set screw and looked through the machined hole to align it to the countersink. That worked a treat! I am very happy with the bit. W.L.Fuller makes a quality product!

Bottom Line Yes, I would recommend to a friend

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October 3, 2008

Clogs!
By violin dude from NYC

Clogs like crazy with the stop ring in Ipe. Had to remove stop to use. Size is for free part of screw not beyond...for that you'll need a smaller bit.

Bottom Line No, I would not recommend to a friend

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