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Product Details

Fuller Type B Counterbores are designed to cut clean holes in softwood. Four flute counterbores for the flat under the head of nails, spikes, and bolts to sink the heads under the surface, or deep enough for wood plug to cover the head. Hardened for long life. Can be used in electric hand drill, drill press, or hand bit brace. Use with a stop collar to control cut depth.

Tech Specs
Part NumberCutting DiameterOverall LengthDrill Size
B35/813/16
B375/817/32
B345/811/4
B3175/8117/64
B395/819/32
B3105/81-1/85/16
B433/413/16
B473/417/32
B43/411/4
B493/419/32
B53/41-1/85/16
B5113/41-1/811/32
B563/41-1/43/8
B647/81-1/81/4
B6104/81-1/85/16
B67/81-1/43/8
B677/81-3/87/16
B687/81-1/21/2
B7411-1/81/4
B7511-1/85/16
B7611-1/43/8
B711-3/87/16
B7811-1/21/2
B851-1/81-1/85/16
B861-1/81-1/43/8
B871-1/81-3/87/16
B81-1/81-1/21/2
B891-1/81-5/89/16
B961-1/41-1/43/8
B971-1/41-3/87/16
B981-1/41-1/21/2
B91-1/41-5/89/16
B9101-1/425/8
B9121-1/42-1/43/4
B1061-3/81-3/83/8
B1071-3/81-3/87/16
B1081-3/81-1/21/2
B1091-3/81-5/89/16
B101-3/825/8
B10121-3/82-1/43/4
B1261-1/21-1/23/8
B1271-1/21-1/27/16
B1281-1/21-1/21/2
B1291-1/21-5/89/16
B12101-1/225/8
B121-1/22-1/43/4