Turned parts for direct screwing in plastics and die-cast products are the economic alternative to cold extrusion parts when small batch sizes (e.g. 1,000 pieces) are wanted.

Thread forming screws manufactured from turned parts – direct screwing also for small batch sizes

Our thread forming screws manufactured as turned parts replace cold extrusion parts which demand high output quantities to achieve a favourable unit price.

We manufacture every desired shape or geometry which you want to screw into another object – from any materials. We then put all the threads on the turned part at our factory. These are thread rolling or thread tapping threads as a rule.

This gives you another great advantage:

High tool costs are saved because no counter-thread is required in the workpiece (e.g. threaded insert, nut) as the parts are screwed directly into the workpiece. Only a specified tube is necessary to be able to screw directly.

  • Thread rolling screws (DIN 7500) for direct screwing into die-cast parts (die-cast aluminium, cast iron, cast steel)
  • Thread tapping screws (DIN 7513–7516)
  • KTG screws for direct screwing into plastics
  • Totally individual screws or other parts with thread

We manufacture turned parts on our precision lathes. Blanks are either cold extrusion parts, but normally turned parts or recut cold extrusion parts (therefore absolutely precise parts).

Turning is a production method for screws or other threaded parts from the materials steel, high-grade steel, aluminium, brass and other metals/alloys that are needed in smaller batch sizes.

All common sizes, drives, materials and surfaces from one supplier. Special sizes and shapes according to drawing or sample – also from us.

Turned parts for direct screwing are usually screwed into plastics to produce sub-assemblies. Users are e.g.:

  • Plastic processing industry
  • Automotive
  • Aircraft industry

a. Materials
All, e.g.:
Machine steel (11SMn30Pb)
Brass (CuZn alloys)
High-grade steel A2–1.4301
Aluminium

b. Strength classes
3.6 – 12.9

c. Thread types
All thread types, e.g. thread rolling (DIN7500), thread tapping (DIN 7513-7516) or PT and KTG for direct screwing into plastics can be manufactured at low cost.

d. Drive types
All common: PZ – PH – TX – slot – combi-slot and special solutions such as safety drives

e. Head types
All common

f. Dimensions
Rd. 2 mm to Rd. 10 mm
Lengths: 8-160 mm or on request

g. Additional processings
End processing: Shank slots, oval half dog point, coned half dog point, long dog point or other as required
Recutting

h. Surfaces
All galvanic processings are possible: galvanised (CrVI-free, RoHS-conform), nickel-plated, chromatised, Delta-Tone and Seal, Dacromet, Geomet etc. according to automotive and electrical industry specifications (VDA standard)

i. Coatings
Thread locks, thread seals (e.g. Tuflok, ScotchGrip, Precote, Loctite, wax coatings).
Samples according to VDA , PPAP on request

j. Heat treatment
All common: Annealing, carbonitriding, drawing, tempering, case hardening. Others on request

k. Batch sizes
Small and medium quantities (e.g. 1,000 pieces)

l. Documentations
Available for first sampling: Standard ISIR as cover sheet sampling; VDA Volume 2 Level 0-3; PPAP Level 1-3.

Recutting
Turned and milled parts

Your contact:
Peter Kubitz

Peter Kubitz

Purchasing manager / Key Account

Phone: +49 (0) 23 51 . 97 85 – 0
Fax: +49 (0) 23 51 . 7 85 30
Email: p.kubitz@eichhoff-schrauben.de

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