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DIN 939 Double End Studs

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DIN 939 Double End Stud

DIN 939 Double End Studs are short cylindrical bars less than about 200 mm long. They are partially and unequally threaded—they consist of a short threaded section, referred to as the tap end, an unthreaded shoulder and a long threaded section, which is the nut end. DIN 939 features an "interference fit" at the tap end; thread tolerance is Sk6 (internal mating thread tolerance is specified as 6H). Right-hand threads are standard. Available in Class 8.8 steel, zinc plated and plain finish (plain finish can rust). The length of the tap end is about 1.25 times the stud diameter (denoted as ~1.25d); stud length is the combined length of the unthreaded shoulder and threaded nut end—not overall length.

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Code Product Qty. Package Qty. Carton
STA694-640 M10-1.5 x 50 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STB694-645 M10-1.5 x 55 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Zinc Plated
STA694-694 M10-1.5 x 120 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-615 M12-1.75 x 25 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-620 M12-1.75 x 30 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-625 M12-1.75 x 35 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-630 M12-1.75 x 40 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-635 M12-1.75 x 45 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-640 M12-1.75 x 50 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-645 M12-1.75 x 55 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA707-670 M12-1.75 x 80 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA726-625 M16-2.0 x 35 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA726-630 M16-2.0 x 40 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA726-635 M16-2.0 x 45 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STB726-635 M16-2.0 x 45 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Zinc Plated
STA726-655 M16-2.0 x 65 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA726-690 M16-2.0 x 100 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA726-694 M16-2.0 x 120 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA745-635 M20-2.5 x 45 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STB745-640 M20-2.5 x 50 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Zinc Plated
STA745-645 M20-2.5 x 55 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STB745-650 M20-2.5 x 60 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Zinc Plated
STA745-665 M20-2.5 x 75 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA745-675 M20-2.5 x 85 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
STA745-680 M20-2.5 x 90 mm Double End Stud (Tap End ~1.25d Long) DIN 939, Interference Fit, Class 8.8, Plain Finish (no rust protection)
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