Gr.5 Zinc Plated Steel UNF Bolts, Nuts and Washers

The UNF (Unified Fine) threads are part of the Unified Thread Standard (UTS), most commonly employed throughout the United States and Canada. The threaded products on this page utilise this fine pitch UNF standard. The washers available on this page are all designed to be used with inch based fasteners.

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UNF Nuts

UNF Bolts

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

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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

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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

UNF Full Hex Nuts ASME B18.2.2 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

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UNF Full Hex Nuts ASME B18.2.2 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

Hexagon full nut to ASME B18.6.3. Typically fitted with a spanner or ratchet with socket. The most popular nut type, and used for decades on all types of assembly throughout the world.

BZP-G5

5/16

7/16

9/16

1-1/8

1-1/4

1-1/2

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