UNC THREAD

UNC THREAD

UNC (Unified National Coarse) threads are the most common American imperial thread standard for general-purpose fasteners. Known for their robust, deep thread form, UNC threads provide strong, durable connections that are less prone to cross-threading and are easy to assemble and disassemble. 

Key Characteristics

  • Thread Angle: UNC threads use a 60° symmetrical V-profile flank angle, the same as modern metric ISO threads.
  • Designation: They are designated by their nominal major diameter (in inches) and the number of Threads Per Inch (TPI). For example, a 1/4"-20 UNC thread has a 1/4-inch diameter and 20 threads per inch.
  • Pitch: They have a larger pitch (fewer threads per inch) compared to the Unified National Fine (UNF) series.
  • Tolerances: The coarse pitch allows for greater tolerances in manufacturing and plating processes and makes them more tolerant of slightly dirty or damaged threads.

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Code Description Price Quantity
HNNC037LP 3/8 UNC STEEL HEX THIN LOCK NUT ZINC PLATED
Out of Stock
£8.72 (exc VAT) per HUND
£10.46 (inc VAT)
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HNNC044LP 7/16 UNC STEEL HEX THIN LOCK NUT ZINC PLATED
Out of Stock
£16.91 (exc VAT) per HUND
£20.29 (inc VAT)
-
+
HNNC050L 1/2 UNC STEEL HEX THIN LOCK NUT
81 In Stock for despatch
£16.80 (exc VAT) per HUND
£20.16 (inc VAT)
-
+
HNNC050LP 1/2 UNC STEEL HEX THIN LOCK NUT ZINC PLATED
Out of Stock
£339.47 (exc VAT) per HUND
£407.36 (inc VAT)
-
+
HNNC062L 5/8 UNC HEX LOCK NUT
225 In Stock for despatch
£25.62 (exc VAT) per HUND
£30.74 (inc VAT)
-
+
HNNC062LP 5/8 UNC STEEL HEX THIN LOCK NUT ZINC PLATED
50 In Stock for despatch
£35.60 (exc VAT) per HUND
£42.72 (inc VAT)
-
+
HNNC075L 3/4 UNC STEEL HEX THIN LOCK NUT
6 In Stock for despatch
£53.24 (exc VAT) per HUND
£63.89 (inc VAT)
-
+
HNNC075LP 3/4 UNC STEEL HEX THIN LOCK NUT ZINC PLATED
44 In Stock for despatch
£82.93 (exc VAT) per HUND
£99.52 (inc VAT)
-
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HNNC087L 7/8 UNC HEX LOCK NUT
120 In Stock for despatch
£133.48 (exc VAT) per HUND
£160.18 (inc VAT)
-
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HNNC100L 1" UNC HEX LOCK NUT (HALF NUT)
10 In Stock for despatch
£810.00 (exc VAT) per HUND
£972.00 (inc VAT)
-
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HNNC125L 1.1/4 UNC HEX THIN LOCK NUTS
Out of Stock
£1,120.00 (exc VAT) per HUND
£1,344.00 (inc VAT)
-
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