Double-End Stud DIN 939
Double-threaded stud with plain center shank for stud connections.
This is a dimension schematic, not a manufacturing drawing. Dimensions match the catalog data; request a quote with the part code to confirm before production.
Code & Size Table
Code, dimensions and tolerance for all 11 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| BAGA-939-01 | 4 | 30 | M4 | 6g | DIN 939 – double-ended stud |
| BAGA-939-02 | 4 | 40 | M4 | 6g | DIN 939 – long body |
| BAGA-939-03 | 5 | 39 | M5 | 6g | DIN 939 – double-ended stud |
| BAGA-939-04 | 5 | 49 | M5 | 6g | DIN 939 – long body |
| BAGA-939-05 | 6 | 48 | M6 | 6g | DIN 939 – double-ended stud |
| BAGA-939-06 | 6 | 63 | M6 | 6g | DIN 939 – long body |
| BAGA-939-07 | 8 | 61 | M8 | 6g | DIN 939 – double-ended stud |
| BAGA-939-08 | 8 | 81 | M8 | 6g | DIN 939 – long body |
| BAGA-939-09 | 10 | 74 | M10 | 6g | DIN 939 – double-ended stud |
| BAGA-939-10 | 10 | 94 | M10 | 6g | DIN 939 – long body |
| BAGA-939-11 | 12 | 92 | M12 | 6g | DIN 939 – double-ended stud |
Prices are for approved members.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. Deviations (mm) are given for the nominal diameter according to the ISO 286-2 tables; thread tolerances (6g/6H) are to ISO 965. For custom sizes/tolerances, contact us with the part code.
Manufacturing Scope
Double-End Stud DIN 939 is a Fasteners family precision-turned on a Goodway SW-20, covering 11 variants — diameters ⌀4–12 mm, lengths 30–94 mm, standard material Steel (also stainless steel, brass or aluminium). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀12 mm bar stock; its longest variant is BAGA-939-10 at 94 mm. Besides turning, the family requires thread turning (6 sizes from M4 to M12). All of it is completed in a single setup, without the part leaving the machine.
The most slender variant is BAGA-939-06: 63 mm long at ⌀6 mm, a length-to-diameter ratio of 10.5. This ratio is the very reason sliding-head lathes exist. The guide bushing supports the bar immediately beside the cutting point, so there is no deflection; the same part chatters and drifts in diameter on a conventional lathe.
Variants are machined to 6g tolerance; the smallest is BAGA-939-01 (⌀4 mm) and the largest BAGA-939-11 (⌀12 mm). The family includes threaded, multi-step variants. Custom sizes, tolerances or materials are produced to the part code on request.
Need a size that isn't listed? We machine to your drawing — CNC contract machining. How these parts are made: What is a Swiss-type lathe?
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