UNF THREAD

UNF THREAD

UNF (Unified National Fine) threads are an American imperial thread standard known for their fine pitch, which provides increased strength, superior vibration resistance, and tighter tolerances compared to the coarser UNC (Unified National Coarse) threads. 

Key Characteristics

  • Thread Angle: UNF threads, as part of the Unified Thread Standard (UTS), use a symmetrical V-profile with a 60° flank angle, which is the same angle used for modern ISO metric threads.
  • Designation: They are designated by their nominal major diameter (in inches) followed by the number of Threads Per Inch (TPI). For example, a 1/4"-28 UNF thread has a 1/4-inch diameter and 28 threads per inch.
  • Pitch: They have a smaller pitch and a higher thread density than UNC threads, meaning more threads per unit of length.
  • Strength: The finer pitch results in a larger tensile stress area for a given diameter and a greater number of engaged threads, contributing to a stronger connection less prone to loosening under vibration.

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Code Description Price Quantity
ANNF025V 1/4 UNF PHILIDAS MK V SELF LOCK NUT
Out of Stock
Price Unavailable
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ANNF031I 5/16 UNF PHILIDAS IND LOCKING NUT ZINC
Out of Stock
Price Unavailable
-
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ANNF031V 5/16 UNF ALL METAL SELF LOCKING NUT
246 In Stock for despatch
£38.50 (exc VAT) per HUND
£46.20 (inc VAT)
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ANNF037V 3/8 UNF PHILIDAS MK V SELF LOCK NUT
1 In Stock for despatch
£171.25 (exc VAT) per HUND
£205.50 (inc VAT)
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ANNF044V 7/16 UNF PHILIDAS MK V SELF LOCK NUT
38 In Stock for despatch
Price Unavailable
-
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ANNF050V 1/2 UNF PHILIDAS MK V SELF LOCK NUT
132 In Stock for despatch
Price Unavailable
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ANNF056V 9/16 UNF PHILIDAS MK V SELF LOCK NUT
779 In Stock for despatch
Price Unavailable
-
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ANNF062V 5/8 UNF PHILIDAS MK V SELF LOCK NUT
57 In Stock for despatch
Price Unavailable
-
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ANNF062V-QUVT 5/8 UNF PHILIDAS MK V QUVT LOCKNUTS
Out of Stock
Price Unavailable
-
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ANNF075V 3/4 UNF PHILIDAS MK V SELF LOCK NUT
218 In Stock for despatch
Price Unavailable
-
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ANNF075V-SUVT 3/4 UNF PHILIDAS MK V SUVT LOCKNUTS
Out of Stock
Price Unavailable
-
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ANNF087V 7/8 UNF PHILIDAS MK V SELF LOCK NUT
Out of Stock
Price Unavailable
-
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ANNF10-32V 10-32 UNF PHILIDAS MK V SELF LOCK NUT
1500 In Stock for despatch
Price Unavailable
-
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ANNF100I 1" UNF PHILIDAS IND ALL METAL LOCK NUT ZINC
Out of Stock
£2,750.00 (exc VAT) per HUND
£3,300.00 (inc VAT)
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ANNF100V 1" UNF PHILIDAS ALL METAL LOCK NUT
1 In Stock for despatch
£2,750.01 (exc VAT) per HUND
£3,300.01 (inc VAT)
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ANNF112V 1.1/8 UNF PHILIDAS MK V SELF LOCK NUT
6 In Stock for despatch
Price Unavailable
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ANNF125V 1.1/4 UNF PHILIDAS MK V SELF LOCK NUT
5 In Stock for despatch
Price Unavailable
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ANNF150V 1.1/2 UNF PHILIDAS MK V SELF LOCK NUT
9 In Stock for despatch
Price Unavailable
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