METRIC THREAD

METRIC THREAD

Metric threads, the most widely used general-purpose screw threads globally, are defined by the ISO Metric Screw Thread standard (ISO 68). They are characterized by a symmetric V-shape profile with a 60° flank angle. 

Designation System

A metric thread is designated by the letter M followed by its nominal major diameter in millimetres. If the pitch is not the standard "coarse" pitch, it is specified after the diameter, separated by an "x" (or a dash). 

  • M8: Refers to a coarse thread with a nominal diameter of 8 mm (and an implied standard pitch of 1.25 mm).
  • M8x1: Refers to a fine thread with a diameter of 8 mm and a pitch of 1 mm. 

Coarse vs. Fine Threads

Metric threads are available in two primary pitch types, which are not related to manufacturing quality. 

  • Coarse Threads:
    • Feature a larger pitch (distance between threads).
    • Are the more common and general-purpose type, widely available and suitable for most applications.
    • Allow for quick assembly and disassembly.
  • Fine Threads:
    • Have a smaller pitch, meaning more threads per unit of length.
    • Offer enhanced strength and better resistance to loosening from vibration.
    • Require a longer thread engagement and are often found in automotive and aerospace applications. 

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Code Description Price Quantity
ANM12 M12 ALL METAL LOCK NUTS DIN980V ZINC PLATED
Out of Stock
£48.90 (exc VAT) per HUND
£58.68 (inc VAT)
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ANM12DT M12 TURRET SELF LOCK NUT PLATED
36 In Stock for despatch
£424.90 (exc VAT) per HUND
£509.88 (inc VAT)
-
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ANM12G M12 ALL METAL LOCK NUTS GALV
80 In Stock for despatch
Price Unavailable
-
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ANM16-DIN980V M16 ALL METAL LOCK NUT CLASS10 BZP (STOVER NUT)12910.160.001
250 In Stock for despatch
£94.20 (exc VAT) per HUND
£113.04 (inc VAT)
-
+
ANM16G M16 ALL METAL LOCK NUTS GALV
74 In Stock for despatch
£1,000.00 (exc VAT) per HUND
£1,200.00 (inc VAT)
-
+
ANM20 M20 ALL METAL LOCK NUT GRD 8 ZINC
24 In Stock for despatch
£356.90 (exc VAT) per HUND
£428.28 (inc VAT)
-
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ANM20G M20 ALL METAL LOCK NUTS GALVANISED
25 In Stock for despatch
£480.00 (exc VAT) per HUND
£576.00 (inc VAT)
-
+
ANM24DT M24 TURRET SELF LOCK NUT PLATED
130 In Stock for despatch
£1,480.59 (exc VAT) per HUND
£1,776.71 (inc VAT)
-
+
ANM24G M24 ALL METAL LOCK NUTS GALV
Out of Stock
£95.00 (exc VAT) per EACH
£114.00 (inc VAT)
-
+
ANM30G M30 ALL METAL LOCK NUTS GALV
Out of Stock
£770.00 (exc VAT) per EACH
£924.00 (inc VAT)
-
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