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Recommended Thread Dia / T.p.i / Minimum Bore Dia
RC ( BSPT )
Maximum drill diameter Hole forms 1 to 2, RC threads are best recommended. 6H 5H 4H UFO 60.6 60.6 60.5 58.2 58.1 58 60.2 60.1 60 61.2 61.1 61 2. Cylindrical drilling with reamer to form taper thread 1. Cylindrical drilling without reamer 62.2 62.1 62 62.6 62.6 62.5 61.2 61.1 61 62.2 62.1 62 63.2 63.1 63 63.6 63.6 63.5 62.2 62.1 62 64.2 64.1 64 65.2 65.1 65 66.2 66.1 66 6

Recommended Preparatory Drill Diameter

M62 x 1.50 M64 x 6.00 M64 x 4.00 M64 x 3.00 M64 x 2.00 M64 x 1.50 M65 x 4.00 M65 x 3.00 M65 x 2.00 M65 x 1.50 M68 x 6.00 M68 x 4.00 M68 x 3.00 M68 x 2.00 M68 x 1.50 M70 x 6.00 M70 x 4.00 M70 x 3.00 M70 x 2.00 M72 x 6.00 M72 x 4.00 M72 x 3.00 M72 x 2.00 M75 x 4.00 M75 x 3.00 M75 x 2.00 M76 x 2.00 M80 x 6.00 M80 x 4.00 M80 x 3.00 M80 x 2.00 M85 x 6.00
Size

Maximum drill diameter 6H 5H 4H 40.79 40.65 40.55 41.27 41.14 41.04 42.25 42.15 42.06 43.21 43.13 43.07 43.67 43.61 43.56 44.15 44.10 44.06 44.67 44.61 44.56 43.29 43.14 43.03 44.27 44.14 44.04 45.25 45.15 45.06 46.21 46.13 46.07 46.67 46.61 46.56 47.15 47.10 47.06 45.29 45.14 45.03 47.25 47.15 47.06 48.21 48.13 48.07 48.67 48.61 48.56 49.15 49.10 49.10 47.20 47

Size M45 x 4.50 M45 x 4.00 M45 x 3.00 M45 x 2.00 M45 x 1.50 M45 x 1.00 M46 x 1.50 M48 x 5.00 M48 x 4.00 M48 x 3.00 M48 x 2.00 M48 x 1.50 M48 x 1.00 M50 x 5.00 M50 x 3.00 M50 x 2.00 M50 x 1.50 M50 x 1.00 M52 x 5.00 M52 x 4.00 M52 x 3.00 M52 x 2.00 M52 x 1.50 M55 x 4.00 M55 x 3.00 M55 x 2.00 M55 x 1.50 M56 x 5.50 M56 x 4.00 M56 x 3.00 M56 x 2.00 M56 x 1.50

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