The Solution To All Of Your Industrial Fastener Requirements

Hot forged, cold formed or machined bolting products, in all materials and grades and to your exact specification.

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

induction hot forging


Special fastener manufacture in most materials and grades to your specification

More »

cnc machining precision

CNC Machining

Precision manufacture, high tensile steel, stainless steel and exotics

More »
threading machine cut thread bolts


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

More »
blanks - hexagon, square head, csk nib, cup square

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.

large diameter bolts manufacturer
bolts in steel, stainless steel, brass, copper, super duplex

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.

manufacture of special head shapes
smith bullough warehouse

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
special fasteners