Duplex Stainless Steel Nuts

The Westfield Fasteners range of Stainless Nuts is presented below. These are designed to be used in conjunction with the equivalent sized metric bolts, screws and washers. Care must be taken when selecting the correct nut to purchase, as we offer metric left handed thread and metric fine pitch variants, which are incompatible with the default standard metric coarse. In grades A2, A4 and A4-80 to be used where good anti-corrosion properties are required.

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Fastener Material Key
A1	A1 Stainless Steel - Also known as grade 303. A general purpose grade of stainless steel but with better fabrication/machining properties than grade 304.
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.
A4-80	A4-80 Stainless Steel - Identical corrosion resistance to A4-70 but with a higher tensile strength equivalent to that of 8.8 high tensile steel.
A5	A5 Stainless Steel - A special stainless steel, also known as 316Ti and 1.4571. Similar to A4 but stabilised with titanium. Popularly employed in the chemical industry.
Alum	Aluminium - Aluminium is a lightweight, strong and corrosion resistant material. As the temperature lowers, aluminium actually increases in strength. It is also non-magnetic, carries a current and does not spark easily.
Duplex	Duplex Stainless Steel 1.4462 - A type of stainless steel which has greater corrosion resistance than A4 / 316 and a high tensile strength of minimum 700 N/mm2. Also known as 318LN.

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Full Hex Nuts Standard Pitch - DIN 934 (ISO 4032) in Duplex Stainless Steel 1.4462

image chamfer for Full Hex Nuts Standard Pitch - DIN 934 (ISO 4032)

Full Hex Nuts Standard Pitch - DIN 934 (ISO 4032) in Duplex Stainless Steel 1.4462

Hexagon full nut to DIN standard 934 with standard metric coarse pitch. Typically fitted with a spanner or ratchet with socket. The most popular nut type, and used for decades on all types of assemblies throughout the world. Can be used in conjunction with Hexagon Thin nuts in a "locking" formation for a more secure fitment. Fine pitch and left hand thread variants are also available immediately below this item. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

Duplex

All Metal Lock Nut (Inloc) Sim. ISO 7042 / DIN 980 in Duplex Stainless Steel 1.4462

image chamfer for All Metal Lock Nut (Inloc) Sim. ISO 7042 / DIN 980

All Metal Lock Nut (Inloc) Sim. ISO 7042 / DIN 980 in Duplex Stainless Steel 1.4462

Prevailing Torque Nuts are a type of all metal locking nut. Designed to lock and resist vibration or shock. Part of the top threads on the nut deform to create a locking action by increased friction, meaning they will not spin freely and torque via a spanner would be needed to fit and remove - hence the name Prevailing Torque. Ideal for applications that require protection against vibratory and other equally dynamic forces. Being All Metal, they do not suffer adversely from high temperatures or chemical contact like other materials such as plastic (used in Nyloc Nuts). Used frequently in Farming Machinery, Automotive and Production Processes.

Duplex

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