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Pin: parallel with internal thread

DIN 7979

DIN 7979 - Parallel pins with internal thread

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Outdated standard

Withdrawn German standard for parallel pins with internal thread, the predecessor of ISO 8733 and ISO 8735 with a wider range, up to d 80 mm and M42. An extractor screw or a slide hammer in the tapped hole of one end pulls the pin out. The pin is a ground cylinder toleranced m6; the tapped end has a short chamfer and a counterbore with a 120 degree countersink that protects the thread. The two forms differ at the plain end: form C is made of unhardened free-cutting steel 9SMnPb28K and has a 15 degree chamfer on that end, form D is hardened to 60 HRC ± 2 HRC and has a crowned end with a radius equal to the diameter and a short 15 degree lead. Covers nominal diameters from 6 to 80 mm with threads M4 to M42 and lengths from 16 to 200 mm. The 1977 edition was replaced by DIN EN 28733 and DIN EN 28735 in 1992 and today by DIN EN ISO 8733 for the unhardened pin and DIN EN ISO 8735 for the hardened pin.

DIN 7979

Geometry

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Pin diameter
Pin length
Internal thread diameter
Thread pitch
Internal thread length
Drill depth, min
Counterbore diameter
Counterbore depth
Threaded end chamfer
Point chamfer
End crown radius
Product Type Pin diameter, mm Pin length, mm Internal thread diameter, mm Thread pitch, mm Internal thread length, mm Drill depth, min, mm Counterbore diameter, mm Counterbore depth, mm Threaded end chamfer, mm Threaded end chamfer angle Point chamfer, mm Point chamfer angle End crown radius, mm
DIN 7979 parallel pin C 50x130 C C 50 130 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin C 50x140 C C 50 140 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin C 50x150 C C 50 150 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin C 50x160 C C 50 160 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin C 50x170 C C 50 170 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin C 50x180 C C 50 180 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin C 50x190 C C 50 190 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin C 50x200 C C 50 200 24 3 36 50 25 2.5 6.3 x15 8 x15 —
DIN 7979 parallel pin D 50x110 D D 50 110 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x120 D D 50 120 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x130 D D 50 130 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x140 D D 50 140 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x150 D D 50 150 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x160 D D 50 160 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x170 D D 50 170 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x180 D D 50 180 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x190 D D 50 190 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin D 50x200 D D 50 200 24 3 36 50 25 2.5 6.3 x15 10 x15 50
DIN 7979 parallel pin C 60x130 C C 60 130 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin C 60x140 C C 60 140 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin C 60x150 C C 60 150 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin C 60x160 C C 60 160 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin C 60x170 C C 60 170 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin C 60x180 C C 60 180 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin C 60x190 C C 60 190 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin C 60x200 C C 60 200 30 3.5 40 56 31 3.2 8 x15 10 x15 —
DIN 7979 parallel pin D 60x130 D D 60 130 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin D 60x140 D D 60 140 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin D 60x150 D D 60 150 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin D 60x160 D D 60 160 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin D 60x170 D D 60 170 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin D 60x180 D D 60 180 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin D 60x190 D D 60 190 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin D 60x200 D D 60 200 30 3.5 40 56 31 3.2 8 x15 12 x15 60
DIN 7979 parallel pin C 70x150 C C 70 150 36 4 54 71 37 4 10 x15 12 x15 —
DIN 7979 parallel pin C 70x160 C C 70 160 36 4 54 71 37 4 10 x15 12 x15 —
DIN 7979 parallel pin C 70x170 C C 70 170 36 4 54 71 37 4 10 x15 12 x15 —
DIN 7979 parallel pin C 70x180 C C 70 180 36 4 54 71 37 4 10 x15 12 x15 —
DIN 7979 parallel pin C 70x190 C C 70 190 36 4 54 71 37 4 10 x15 12 x15 —
DIN 7979 parallel pin C 70x200 C C 70 200 36 4 54 71 37 4 10 x15 12 x15 —
DIN 7979 parallel pin D 70x150 D D 70 150 36 4 54 71 37 4 10 x15 14 x15 70
DIN 7979 parallel pin D 70x160 D D 70 160 36 4 54 71 37 4 10 x15 14 x15 70
DIN 7979 parallel pin D 70x170 D D 70 170 36 4 54 71 37 4 10 x15 14 x15 70
DIN 7979 parallel pin D 70x180 D D 70 180 36 4 54 71 37 4 10 x15 14 x15 70
DIN 7979 parallel pin D 70x190 D D 70 190 36 4 54 71 37 4 10 x15 14 x15 70
DIN 7979 parallel pin D 70x200 D D 70 200 36 4 54 71 37 4 10 x15 14 x15 70
DIN 7979 parallel pin C 80x170 C C 80 170 42 4.5 63 82 43 5 12 x15 14 x15 —
DIN 7979 parallel pin C 80x180 C C 80 180 42 4.5 63 82 43 5 12 x15 14 x15 —
DIN 7979 parallel pin C 80x190 C C 80 190 42 4.5 63 82 43 5 12 x15 14 x15 —
DIN 7979 parallel pin C 80x200 C C 80 200 42 4.5 63 82 43 5 12 x15 14 x15 —
DIN 7979 parallel pin D 80x170 D D 80 170 42 4.5 63 82 43 5 12 x15 16 x15 80
DIN 7979 parallel pin D 80x180 D D 80 180 42 4.5 63 82 43 5 12 x15 16 x15 80
DIN 7979 parallel pin D 80x190 D D 80 190 42 4.5 63 82 43 5 12 x15 16 x15 80
DIN 7979 parallel pin D 80x200 D D 80 200 42 4.5 63 82 43 5 12 x15 16 x15 80