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.

No detailed specifications are available for this product.

There are no downloads for this product.

Code Description Price Quantity
SBHNC025037 1/4 UNC X 3/8 SOCKET BUTTON SCREW
150 In Stock for despatch
£21.60 (exc VAT) per HUND
£25.92 (inc VAT)
-
+
SBHNC025050 1/4 UNC X 1/2 SOCKET BUTTON SCREW
23 In Stock for despatch
£10.20 (exc VAT) per HUND
£12.24 (inc VAT)
-
+
SBHNC025050P 1/4 UNC X 1/2 SOCKET BUTTON SCREW ZINC PLATED
Out of Stock
£46.80 (exc VAT) per HUND
£56.16 (inc VAT)
-
+
SBHNC025062 1/4 UNC X 5/8 SOCKET BUTTON SCREW
Out of Stock
£20.44 (exc VAT) per HUND
£24.53 (inc VAT)
-
+
SBHNC025075 1/4 UNC X 3/4 SOCKET BUTTON SCREW
126 In Stock for despatch
£32.20 (exc VAT) per HUND
£38.64 (inc VAT)
-
+
SBHNC031050 5/16 UNC 18TPI X 1/2" SOCKET BUTTON HD SCREW
175 In Stock for despatch
£41.50 (exc VAT) per HUND
£49.80 (inc VAT)
-
+
SBHNC031062 5/16 UNC 18TPI X 5/8" SOCKET BUTTON HD SCREW
94 In Stock for despatch
£33.30 (exc VAT) per HUND
£39.96 (inc VAT)
-
+
SBHNC031075 5/16"UNC X 3/4" SOCKET BUTTON HEAD SCREWS
60 In Stock for despatch
£52.70 (exc VAT) per HUND
£63.24 (inc VAT)
-
+
SBHNC037100 3/8 UNC X 1" SOCKET BUTTON SCREW
Out of Stock
£44.10 (exc VAT) per HUND
£52.92 (inc VAT)
-
+
SBHNC037200 3/8 UNC X 2" SOCKET BUTTON SCREW
8 In Stock for despatch
Price Unavailable
-
+
SBHNC04050 No4 UNC X 1/2 SOCKET BUTTON SCREW
Out of Stock
£50.00 (exc VAT) per HUND
£60.00 (inc VAT)
-
+
SBHNC04050P No4 UNC X 1/2 SOCKET BUTTON SCREW ZINC PLATED
Out of Stock
£66.70 (exc VAT) per HUND
£80.04 (inc VAT)
-
+
SBHNC050125 1/2 UNC X 1.1/4 SOCKET BUTTON SCREW
23 In Stock for despatch
£229.70 (exc VAT) per HUND
£275.64 (inc VAT)
-
+
SBHNC050200 1/2 UNC X 2" SOCKET BUTTON SCREW
25 In Stock for despatch
£166.30 (exc VAT) per HUND
£199.56 (inc VAT)
-
+
SBHNC06025 No6 UNC X 1/4 SOCKET BUTTON SCREW
150 In Stock for despatch
£13.10 (exc VAT) per HUND
£15.72 (inc VAT)
-
+
SBHNC06050 No6 UNC X 1/2 SOCKET BUTTON SCREW
80 In Stock for despatch
£17.20 (exc VAT) per HUND
£20.64 (inc VAT)
-
+
SBHNC06062 No6 UNC X 5/8 SOCKET BUTTON SCREW
Out of Stock
£18.30 (exc VAT) per HUND
£21.96 (inc VAT)
-
+
SBHNC08025 No8 UNC X 1/4 SOCKET BUTTON SCREW
150 In Stock for despatch
£51.50 (exc VAT) per HUND
£61.80 (inc VAT)
-
+
SBHNC08037 No8 UNC X 3/8 SOCKET BUTTON SCREW
200 In Stock for despatch
£19.80 (exc VAT) per HUND
£23.76 (inc VAT)
-
+
SBHNC08075 No8 UNC X 3/4 SOCKET BUTTON SCREW
Out of Stock
£14.80 (exc VAT) per HUND
£17.76 (inc VAT)
-
+
SBHNC10025 No10 UNC X 1/4 SOCKET BUTTON SCREW
180 In Stock for despatch
£21.20 (exc VAT) per HUND
£25.44 (inc VAT)
-
+
SBHNC10037 No10 UNC X 3/8 SOCKET BUTTON SCREW
223 In Stock for despatch
£27.50 (exc VAT) per HUND
£33.00 (inc VAT)
-
+
SBHNC10050 No10 UNC X 1/2 SOCKET BUTTON SCREW
Out of Stock
£37.60 (exc VAT) per HUND
£45.12 (inc VAT)
-
+