Anchor bolts


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Threaded rods and studs


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Trapezoidal- and special nuts


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Hexagon head screws


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SB assemblies


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Precision turned parts


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Component assembly


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General:
There is no standard definition for the term "anchor bolts". Bolts that are brought into a foundation and then fixed to a structural steel work are commonly called "anchor bolts". Other terms are "foundation screws", "anchor screws", etc.

Dimensions
M 8 - M 100

Length:
50 mm - 6000 mm

Types:

  • double end studs (bars with thread on both sides)
  • rag bolts, masonry bolts DIN 529 (model A, B and C)
  • J-anchors
  • studs for welding DIN 525
  • hook bolts
  • special design as per customer requirements according to drawing or sample

Property classes/material:
4.8, 5.6, 8.8,10.9 stainless steel AISI 304 (A2-70), AISI 316 (A4-70) further materials on request

Surface treatment:
self colour, bright zinc plated (bzp), hotdip galvanized, micro layer corrosion protection systems e.g. Dacromet, Geomet, further surfaces on request

Specials:
Anchor bolts are needed and built in, in many different sizes and types. Due to our flexibility we are able to meet every demand of our customers. We supply anchor bolts for example:

  • with a shrinking hose
  • with a combination of conduit and shrinking hose
  • with bitumen coating
  • with mounted nuts and washers
  • with thread protection net

DIN:
DIN 976

Dimensions:
metric ISO thread M 6- M 120
fi ne pitch thread M 8x1 - M 64x4
UNC/UNF thread 5/16” - 1 ½”
trapezoidal thread TR 10x3 - TR 60x9
further threads on request

Length:
20 mm - 6000 mm

Property classes/material:
4.8, 5.6, 5.8, 8.8, 10.9, 12.9, steel, stainless steel AISI 304 (A2-70), AISI 316 (A4-70), brass special materials on request

Surface treatment:
self colour, bright zinc plated (bzp), hotdip galvanized, micro layer corrosion protection systems e.g. Dacromet, Geomet, further surfaces on request

Types:

  • type A (without chamfer)
  • type B (with chamfer)
  • slotted
  • with coned point
  • stamped or with coloured markings

further add-ons on request

In stock:
threaded rods – 4.8, 8.8, 10.9 and 12.9, AISI 304 (A2-70), AISI 316 (A4-70) in 1 m-, 2 m-, 3 m- length threaded studs – 4.8 M 8 and M 10, BZP up to 200 mm total length in standard sizes deliverable in small boxes

Stud bolts

DIN 835 stud, metal end – 2d
DIN 938 stud, metal end – 1d
DIN 939 stud, metal end – 1,25 d
DIN 940 stud, metal end – 2,5 d
DIN 949-1 studs with metric interference thread MFS;
Length of engagement =2d
DIN 949-2 studs with metric interference thread MFS;
Length of engagement =2,5d
special stud sizes according to your drawing or sample

Dimensions:
M 5 - M 100

Property classes/materials:
5.6, 5.8, 8.8, 10.9, steel, stainless steel AISI 304 (A2-70), AISI 316 (A4-70) further materials on request

Surface treatment:
self colour, bright zinc plated (bzp), thick film passivated, hot-dip galvanized, phosphated, micro layer corrosion protection systems e.g. Dacromet, Geomet.

In stock:
DIN 938 and DIN 939 in 5.8 and 8.8 from M 6 to M 24 in standard sizes deliverable in small boxes

Engineering studs

We manufacture engineering studs, stud bolts and double end studs according to your drawing or sample.

Dimensions:
M 6 - M 120

Length:
Up to 6000 mm

Property classes/materials:
4.8, 5.6, 5.8,10.9, stainless steel AISI 304 (A2-70), AISI 316 (A4-70) further materials on request

Surface treatment:
self colour, bright zinc plated (bzp), thick film passivated, hot-dip galvanized, phosphated, micro layer corrosion protection systems e.g. Dacromet, Geomet

Types:
reduced shaft with rolled thread double end studs with rolled or cutted thread different add-ons, e.g. with chamfer, stamped if required

Dimensions:

nuts:
Trapezoidal TR 10x3 – TR 50x8

special nuts and nut resembling parts:
up to ø 65 mm from the rod
up to ø 250 mm in the chuck

Materials:

trapezoidal nuts:
red bronze, free-cutting steel, S355J0/J2, stainless steel AISI 304 (A2), AISI 316 (A4) further materials on request

Special nuts and nut resembling parts:
free-cutting steel, quenched and tempered steel, steel with specified elevated temperature properties, stainless steel, aluminum, brass, copper, plastic further materials on request

Type:
turned

Finishing:
milling, grinding, drilling, thread cutting

Surface treatment:
all requested surfaces

DIN:
DIN EN ISO 4014 (DIN 931) hexagon head screw with shank
DIN EN ISO 4017 (DIN 933) hexagon head screw with thread up to head
DIN EN ISO 8765 (DIN 960) hexagon head screw with metrical fine pitch thread and shank
DIN EN ISO 8676 (DIN 961) hexagon head screw with fine pitch thread and thread up to head
DIN EN ISO 4762 (DIN 912) hexagon socket head cap screws

Dimensions:
M6 8mm – 100mm
M8 12mm – 120mm
M10 16mm – 300mm
M12 20mm – 300mm
M14 25mm – 300mm
M16 25mm – 300mm
M18 30mm – 300mm
M20 45mm – 200mm
M24 45mm – 200mm
M27 50mm – 200mm
M30 50mm - 200mm

Property classes/material:
8.8 10.9, 12.9 (4.8, 5.8, 6.8 on request)

Finishing:
turning, drilling, grinding

Surfaces:
Raw, electrolytically hot dip galvanised, thick film passivated, phosphated, zinc-nickel, zinc flake coating i.e. Geomet® 321/500. Other surfaces acc. to VDA 235 - 104 upon request.

Avaliable from stock:
Prevalent dimensions of DIN 912, 931, 933 in class 10.9 and 12.9.

Packaging:
Delivery is possible in any desired packaging unit.

Others:
Optoelectronic sorting

CE labeled

DIN:
DIN EN ISO 4014 - Hexagon head screw with shank
DIN EN ISO 4017 - Hexagon head screw with thread up to head
DIN EN ISO 4032 - Hexagon nut (style 1)

Dimensions:
M12 25mm – 160mm
M16 30mm – 200mm
M20 35mm – 220mm
M24 40mm – 220mm
M27 50mm – 220mm

Property class:
8.8 U

Surface:
Hot-dip galvanized (HDG)

Available from stock:
from M12 to M24 in standard sizes

DIN EN 15048, minus 40°C

GRAEWE’s new product range – SB-assemblies for Structural Bolting – includes hot-dip galvanised hexagonal bolts to EN ISO 4014 and 4017 in grade 8.8 and dimensions from M12 to M27, with CE marking according to the Construction Products Regulation. DIN EN 15048 regulates the requirements for assemblies for non-preloaded fixing connections. The use of bolt and nut assemblies in steel constructions simplifies the proof of suitability of fixing connections. Assemblies consist of a matching bolt and nut with the same coating. All requirements for hot-dip galvanised grade 8.8 fasteners require a choice of special materials for the manufacturing process. The tempering temperature needs to be clearly above the minimum value and in addition the bolt needs to absorb the prescribed tensile force, despite the lower tensile stress area due to undersize/minus allowance.

Differing thread tolerances between bolts and nuts also have an influence on the tensile strength of the assembly. The functionality of GRAEWE bolt and nut assemblies is precisely and comprehensively determined through tensile tests. GRAEWE also carries out a notch impact test at -40°C in its own laboratory, in order to guarantee the quality in cold conditions. Additionally, all prescribed requirements and additional tests are guaranteed and documented accordingly. The hot-dip galvanised hexagon bolts of SB sets are marked with GRAEWE’s manufacturer label, 8.8 – for the grade, SB – for structural bolting, and U – for thread tolerance 6az before coating. For later reconstruction of the manufacturing process GRAEWE bolts receive an additional marking. As a reputed and successful producer of bolts, GRAEWE manufactures hexagon head and hexagon socket bolts in diameters M6 – M27 and lengths of 12mm – 320mm. A comprehensive stock and efficient logistics guarantee fast availability even for smaller orders. In addition to the fastener trade, GRAEWE also serves key industries such as automotive, civil engineering, wind energy, agricultural equipment, as well as steel construction and mechanical engineering.

Dimensions:
up to ø 65 mm from the rod
up to ø 250 mm in the chuck
Complex processing is possible through the use of driven tools and rear treatment. Line production can be economically realised through fully automatic conveyance such as gantry loader and bar loading magazine.

Materials:
Free cutting steel, quenched and tempered steel, high tensile steel, stainless steel, aluminum, brass, copper, plastic. Other materials upon request.

Finishing:
Grinding, milling, drilling, bending, tapping, thread rolling, broaching.

Heat treatment:
All prevalent procedures:
Hardening and tempering, case- induction- nitrogen hardening. Other procedures upon request.

Surfaces:
Electrolytically galvanised, zinc flake coating i.e. Geomet® 321/500, anodizing, phosphatizing, nitrocarborizing, Tenifer® treatment. Other surfaces upon request.

General information:
We manufacture your system upon request ready for assembly and sale. We complete our components into units according to particular customer requirements. Our extensive range of production comprises among other things simple assembly work up to sophisticated welding units. A qualified network of selected cooperation partners and suppliers enable us to also deliver complex units. Inspections and performance tests are accomplished and documented according to your individual requests.

Procedure:
Mounting, bonding, welding, minting, grouting, bending, screwing, drilling, riveting.

Heat treatment:
All prevalent procedures:
Hardening and tempering, case-induction- nitrogen hardening. Other procedures upon request.

Surfaces:
Electrolytically galvanised, zinc flake coating i.e. Geomet® 321/500, anodizing, phosphatizing, nitrocarborizing, Tenifer® treatment. Other surfaces upon request.

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