Parts can be joined easily and inexpensively with bolts or pins. The connection can be undone again without destruction.

Useful bolts for every fastening problem

Bolts are cylindrical connecting elements with or without head, with or without thread. Parts can be joined easily and inexpensively with bolts or pins.

Bolts have clearance and can move in the hole. They are suitable for loose and tight connections, joint connections, bearings, guides, centrings, retainers and for securing the parts against overloading.

For loose connections and for accommodation of axial forces, bolts are usually secured against moving or twisting by locking elements such as cotter pins, locking rings or cross pins.

A harder material is normally chosen for bolts than for the parts to avoid the risk of pitting and excessive wear. Standard bolts are made from free machine steel.

The advantage over pins, rivets and welded connections is that bolt connections can be undone again without destruction. They are especially suitable for connections which need to be undone quickly and frequently (for example scaffolding, securing of loads).

  • Bolt with head (according to EN 22340)
  • Bolt without head (according to EN 22341)
  • Stud bolts (stress bolts) (according to DIN 2510)
  • Blocking pins
  • Fox bolts (according to DIN 1434 etc.)
  • Spacer bolts
  • Threaded bolts, threaded pins, stud bolts, threaded rods (according to DIN 913-916, 939, 976, 2510)
  • Double-threaded bolts with rolled-on thread on one or both sides

We manufacture bolts as double-stroke cold extrusion parts.

All standard parts and bolts according to drawing from one supplier.

Automotive industry, mechanical engineering, metalwork and many more

a. Materials
All common: Steel, high-grade steel A2 and A4, brass, copper, aluminium and other light metals

b. Strength classes
3.6 – 12.9

c. Thread types
All common

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
Threaded bolts: M3 to M6 | to 1000 mm
Double-threaded bolts: M2.6 to M10 | to 1000 mm

g. Additional processings
Cutting

h. Surfaces
All common: 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
from 30,000 pcs. (smaller quantities by agreement)

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

Press-in bolts

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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