Non-Standard & Special Fastener Manufacture

Whether hot forged, cold formed, mild steel, high tensile, metric or imperial - Smith Bullough has a solution to meet your industrial fastener requirements.

Metric & Imperial Fasteners


Metric, BSF, BSW, BA, UNC, UNF

Large stocks of Metric & Imperial Bolts and Screws in Metric, BSW (Whitworth), BSF, BA, UNC and UNF threadforms.

Non-Standard Bolting


Rapid Delivery from Blanks

Smith Bullough manufacture non standard lengths and thread lengths from ex-stock blanks.

Special Bolt Manufacture


Forging & Machining

Cold and hot forged special bolts, fasteners & fixings are manufactured in various materials. Machining options further extend our dimensional range and capabilities.

Specialist Fastener Manufacturing


Special fastener manufacture in most materials and grades to your specification

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CNC Machining

Precision manufacture, high tensile steel, stainless steel and exotics

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Rapid response in all threadforms including Metric, BSW, BSF, UNC, UNF

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Rapid response in Metric, BSW, BSF, UNC, UNF

We specialise in standard imperial fasteners and non-standard metric.

Vast blank stocks ensure a rapid response in all threadforms.

BIG in Fastener Manufacturing

Metric headed parts are produced from M6 up to M64 in diameter, and up to 1000mm long.

Imperial headed parts range from 1/4" to 2" diameter, and up to 40" long.

Studding can be manufactured up to 6 metres long.

Materials - Steel, Stainless & Exotics

Smith Bullough manufacture fasteners in most materials, including:

  • Carbon Steel - Grades 4.6 - 14.9; R, S, T, V; SAE8
  • Stainless Steel - A2, A4, B8/M
  • Super Duplex - UNS S31254, S32750, S32760
  • Exotic Alloys - Hastelloy, Monel, Inconel, Nitronic, Titanium, 660
  • Non-Ferrous - Hiduron, Cupro Nickel, Aluminium, Phosphor Bronze, Copper

Special Head Shapes

Special head shapes are manufactured to customer specification or drawing using induction-heated hot forging. Closely controlled temperature ensures dimensional accuracy and optimal material movement.

Tooling is designed and manufactured in-house.

Stocks of BSW & BSF

Large stocks of Whitworth (BSW) & BSF threaded bolting product make us the established market leader in the supply of these ranges to the distribution trade.

Surface Finishes

Surface finishes are provided by approved subcontractors, and include:

  • Zinc Plating
  • Galvanising
  • Sherardising
  • Geomet
  • Delta
  • Xylan