Fastener Manufacturing — Socket Cap Screws, Set Screws, Studs & Custom Bolts
DIN 912 socket cap, DIN 7991 countersunk, DIN 913-915 set screws, studs & custom bolts: 16 families, 171 types. ⌀1–20 mm CNC Swiss turning. Get a quote.
Part Families
Socket Head Cap Screw DIN 912
Cylinder head hex socket cap screw for high-strength fastening.
⌀4.5–18 · L 14–65 mm
11 types
Cheese Head Screw DIN 84
Slotted cheese head screw for precision assembly applications.
⌀3.8–13 · L 10–43.9 mm
11 types
Countersunk Screw DIN 7991
Hex socket countersunk screw with 90 degree flush-mount head.
⌀5.5–20 · L 13.7–49.4 mm
11 types
Set Screw Cone Point DIN 914
Hex socket cone-point set screw that bites into shaft for locking.
⌀3–10 · L 7.5–29 mm
11 types
Set Screw Flat Point DIN 913
Hex socket flat-point set screw for clamping without surface damage.
⌀3–12 · L 6–30 mm
12 types
Set Screw Dog Point DIN 915
Hex socket dog-point set screw for locating into a mating bore.
⌀3–10 · L 9.5–34 mm
11 types
Double-End Stud DIN 939
Double-threaded stud with plain center shank for stud connections.
⌀4–12 · L 30–94 mm
11 types
Knurled Thumb Screw
Hand-tightened knurled head screw for tool-free adjustments.
⌀8–18 · L 15–48 mm
11 types
Flanged Bolt
Fastening bolt with an integrated wide flange under the head that distributes bearing load.
⌀12–20 · L 17.5–40 mm
10 types
Chamfer-Tip Bolt
Hex-headed precision bolt with a cone-chamfered thread tip for easy thread starting.
⌀6.4–19.6 · L 13–47 mm
11 types
Shoulder Bolt
Bolt with a precision-ground cylindrical shoulder and smaller threaded end acting as a pivot pin.
⌀6.4–16 · L 21–62 mm
10 types
Double-End Stud
Stud threaded on both ends with a plain shank between, one end seated into the body.
⌀4–10 · L 28–100 mm
10 types
Tap-End Stud
Long stud with a short interference-fit thread on one end and a longer nut thread on the other.
⌀5–12 · L 43–138 mm
10 types
Set Screw
Headless fully threaded set screw with internal hex drive and cone point to lock a shaft.
⌀3–10 · L 6–20 mm
11 types
Dowel Support Screw
Stepped screw with a precision cylindrical dowel end and a threaded end for locating and support.
⌀4–10 · L 20–57 mm
10 types
Knurled Thumb Screw
Screw with a knurled cylindrical head gripped and tightened by hand for tool-free assembly.
⌀8–18 · L 13–37 mm
10 types
Enter ⌀ and L to list matching variants with code and tolerance.
Search this category by sizeFasteners are threaded precision-turned parts that removably join two components in machinery, mold, automotive and general assembly work. This category holds 16 families and 171 types: DIN 912 socket head cap screws, DIN 84 cheese head screws, DIN 7991 countersunk screws, DIN 914 cone-point, DIN 913 flat-point and DIN 915 dog-point set screws, DIN 939 studs, double-end and long studs, flanged, chamfered-end and shoulder bolts, plus knurled thumb screws. We machine steel, stainless steel, brass and aluminium; on outer diameters and threads we hold h6/H7 class, ±0.01 mm is targeted on critical diameters, and we control end chamfers and knurls. Every part is turned on a Goodway SW-20 CNC Swiss lathe within a ⌀1–20 mm bar range in a single setup. Beyond the 171 standard types we also produce custom sizes from a technical drawing or a sample. Pricing is by quotation: send your drawing or sample and we prepare a quote based on dimensions, tolerance and quantity.
Threading defines this category: 171 of the 171 variants (100%) carry a thread. The full operation mix is 171× thread turning, 31× hex flat milling, 32× taper turning, 21× knurling, all of it completed in one setup on parts 6–138 mm long.
Everything here is held to 3 tolerance classes (6g, f7, h6), and 100% of the variants map to a DIN or ISO standard. The highest length-to-diameter ratio in the category belongs to BAGB-TES-04 at L/D 12.2 — the slenderness a sliding-head lathe is built for.
Every part is CNC-turned to your drawing — series, small batches and custom turned parts. Send your drawing (PDF/DWG/STEP) for a quote.
Frequently Asked Questions
Parts are turned from bar stock on a Goodway SW-20 CNC Swiss lathe. The guide bushing keeps deflection minimal on slender, long parts, and threads, end chamfers and knurls are machined in one setup. This gives high repeatability and dimensional stability on socket screws, set screws and studs.
We machine steel, stainless steel, brass and aluminium. Material is chosen by application: stainless for corrosive environments, brass for conductivity or appearance, aluminium for light weight, steel for general strength. We confirm the exact grade with you during the quotation stage.
Since the SW-20 tops out at ⌀20 mm, we produce within a ⌀1–20 mm bar range. h6/H7 class is standard on outer diameters and fit surfaces; ±0.01 mm is targeted on critical diameters, and we can supply a measurement report. Thread standard (metric/DIN) and tolerance class follow your technical drawing.
Yes. Alongside the 171 standard types we produce custom dimensions, threads, point styles and head forms from a drawing or a sample. If you have no drawing, we measure your sample and reproduce it. Our workshop in Düzce has done precision turning since 2009.
Prototypes and samples start at a single piece; for series work the unit price drops as quantity rises. Lead time depends on material supply, quantity and part complexity, and is stated clearly in the quote. We serve both domestic and export orders.
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