Gr.5 Zinc Plated Steel UNF Bolts

Our range of UNF Bolts are listed below. A full range of American (Imperial) specification stainless steel/hardened steel variants in A2 (304), A4 (316) grades and Zinc Plated hardened steel. Available in UNF and UNC forms. Always take care to ensure you have the correct size combinations as its easy to get thread types and pitches confused meaning incompatibility issues and disappointment when your order arrives.

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UNF Nuts

Imperial Washers

Imperial Grub Screws

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.
MZP	Mechanically Plated Zinc Steel - Mechanically applied zinc plating, useful to help prevent hydrogen embrittlement.

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UNF Hex Head Setscrews ASME B18.2.1 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

image chamfer for UNF Hex Head Setscrews ASME B18.2.1

UNF Hex Head Setscrews ASME B18.2.1 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

Commonly referred to as a setscrew and longer versions are referred to in the United States as a tap bolt. A standard spanner or ratchet is typically used to fit this product. Used for decades on all types of assembly throughout the world. The hex drive allows a higher torque to be applied. Produced to ASME B18.2.1.

BZP-G5

5/16

7/16

9/16

UNF Hex Head Bolts ASME B18. 2.1 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

image chamfer for UNF Hex Head Bolts ASME B18. 2.1

UNF Hex Head Bolts ASME B18. 2.1 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

The most common type of fastener, a hex head bolt is designed to be tightened with a standard spanner or ratchet and socket. Popularly used in all assemblies, a standard hex bolt is a staple across the world. Manufactured to ASME B18. 2.1, and includes an unthreaded 'shoulder' or portion of the shank. A hex drive permits a greater torque load to be applied to the joint over most other drive types.

BZP-G5

5/16

7/16

9/16

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