Stud Bolts

Description:

STUD BOLTS & NUTS

TBJ Africa supplies stud bolts & nuts in a variety of materials from carbon and stainless steels to exotic nickel alloys.

The Stud bolt & Nuts are used in applications where corrosion, creep, heat resistance and strength are often vital. Due to the criticality of these items, quality is of paramount importance and therefore all materials are fully traceable back to original mill certificates. Having such a wide range of materials TBJ Africa is able to offer an immediate response for products required in “breakdown” situations.

Dedicated Stocks: – Due to the requirements of various clients procuring same standard fasteners on a regular basis TBJ has dedicated stocks of finished or semi-finished fasteners.

Manufacturing Process

Preheated Steel is used by our manufacturer. Thread rolling guarantees quality of profiles, smooth finish and resistance to seizing. The parts are all marked with grade identification symbols and the manufacturer’s trademark. The nuts are hot-forged and treated before tapping.

Materials

Petrochemical carbon steel grades – B7; B7M; L7; L7M; B16; L43; 2H, 2HM; 4; 7; 7M

Petrochemical stainless grades – B6; B8; B8 cl2; B8M; B8M cl2; B8T; B8C; 6; 8; 8A; 8M; 8MA; 8T; 8C

Stainless Grade – 304; 316; 321; 310; 410; 431

Exotic Alloys – Inconel; Monel; Hastelloy; Titanium; Nickel Ali Bronze, and more.

Thread-forms & Dimensions

• All types of thread forms can be supplied although imperial and metric are most common.
• Metric Course
• Metric Fine
• BSW/BSF
• UNC/UNF
• UNS-8TPI
• From M3 to M180 (1/8” to 6” Diameter)

Bolts

Hex Head; Carriage; Eye; Stripper; Square Head; Lag; Stove; Tap Toggle

Nuts

Hex; Lock; Keps; Clinch; Cap; Square; Press; Wing; Flange; Weld; Specials

Washers

Flat; Split Lock; Shoulder; Star; Finishing; Fibre; Nylon; Special

Cap Screws

Hex Head; Socket Head; Button; Flat

Coatings

Our client’s fasteners typically need to be protected to improve the anti-corrosion properties. Our manufacturers offer numerous coatings including electrolytic and chemical coatings:

Electrolytic :

Zinc Plating; Nickel Plating; Chromium Plating; Copper Plating; Aluminium Plating; Cadmium Plating

Chemical & Other:

Mn/Zn Phosphating; Electroless Nickel Plating; Hot Dipped Galvanised; Xylan

Testing

• Visual and Dimensional Examination

• Metallurgical Tests:

Chemical Analysis on heat and on the final product

Tensile Strength Tests

Hardness Tests

Low and room temperature impact tests

Stress Rapture Tests

• Supplementary Tests, when required:

High Temperature Tests

Impact Tests