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DIN 939 Fo Double End Stud

DIN 939 Fo Double End Studs are short rods with long and short threaded ends separated by an unthreaded shoulder. The long threaded end is called the nut end. The short threaded end is the tap end—its length is about 1.25 times the diameter of the stud (denoted as ~1.25d). The tap end of DIN 939 Fo studs has a non-interference "normal thread" fit and a thread tolerance of 6g; tolerance of mating internal threads is 6H. Right-hand threads are standard. Choose from Class 5.8 and 8.8, zinc plated and plain finish, which lacks corrosion protection. Stud length, which is 140 mm and less, is comprised of the nut end (long threaded section) and the unthreaded shoulder—the short tap end is not included in the length measurement. DIN 939, in contrast, has an "interference fit" tap end and a thread tolerance of Sk6.

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Code Product Qty. Package Qty. Carton  
STG618-606 M5-0.8 x 16 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Zinc Plated
STH618-606 M5-0.8 x 16 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STH618-610 M5-0.8 x 20 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STJ618-610 M5-0.8 x 20 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Zinc Plated
STF618-615 M5-0.8 x 25 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Plain Finish (no rust protection)
STG618-615 M5-0.8 x 25 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Zinc Plated
STH618-615 M5-0.8 x 25 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STF618-620 M5-0.8 x 30 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Plain Finish (no rust protection)
STG618-620 M5-0.8 x 30 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Zinc Plated
STH618-620 M5-0.8 x 30 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STJ618-625 M5-0.8 x 35 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Zinc Plated
STF618-630 M5-0.8 x 40 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Plain Finish (no rust protection)
STH618-630 M5-0.8 x 40 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STH618-635 M5-0.8 x 45 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STH636-606 M6-1.0 x 16 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STJ636-606 M6-1.0 x 16 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Zinc Plated
STH636-608 M6-1.0 x 18 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STG636-610 M6-1.0 x 20 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Zinc Plated
STH636-610 M6-1.0 x 20 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STJ636-610 M6-1.0 x 20 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Zinc Plated
STH636-615 M6-1.0 x 25 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)
STJ636-615 M6-1.0 x 25 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Zinc Plated
STF636-620 M6-1.0 x 30 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Plain Finish (no rust protection)
STG636-620 M6-1.0 x 30 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 5.8, Zinc Plated
STH636-620 M6-1.0 x 30 mm Double End Stud (Tap End ~1.25d Long) DIN 939Fo, without Interference Fit, Class 8.8, Plain Finish (no rust protection)

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