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Westfield Fasteners Ltd Telephone: 01844201133, Email: enquiries@westfieldfasteners.co.uk
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Gr.5 Zinc Plated Steel Imperial Nuts & Bolts

Our range of Imperial Nuts and Bolts is shown below. Manufactured to United States standards with Unified Coarse Pitch (UNC) and Unified Fine Pitch (UNF) available. All items measured in Imperial sizes (Inch). Our Imperial Nuts and Bolts are available in A2 and A4 grades of stainless steel and also zinc plated options.
Fastener Material Key
A2
A2 Stainless Steel - Also known as grade 304 or 18/8. A general purpose grade of stainless steel.
A4
A4 Stainless Steel - Also known as grade 316 or 18/8/3. A higher corrosion resistant, marine grade of stainless steel.
BZP
Bright Zinc Plated (BZP) Steel - Non-stainless standard steel grade offering a basic level of corrosion resistance.
BZP-G5
Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel - Equivalent to ISO class 8, a general purpose high tensile grade with a basic level of corrosion resistance.
BZP-TH
Through (Thru) Hardened Bright Zinc Plated Steel - Carburised or through hardened washer in Bright Zinc Plate finish that has been treated to improve strength.
MZP
Mechanically Plated Zinc Steel - Mechanically applied zinc plating, useful to help prevent hydrogen embrittlement.
ZnFlk
Organic Zinc Flake Coated Steel - Steel parts coated with superior mechanically applied zinc with corrosion resistance lasting 480 hours in the salt spray test.

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