UNC THREAD

Descriptions

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.

Specifications

No detailed specifications are available for this product.

Downloads

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Code	Description	Price	Quantity
SCSNC025050	1/4 UNC X 1/2 SOCKET CSK SCREW 100 In Stock for despatch	£37.80 (exc VAT) per HUND £45.36 (inc VAT)	- +
SCSNC025062	1/4 UNC X 5/8 SOCKET CSK SCREW Out of Stock	£27.77 (exc VAT) per HUND £33.32 (inc VAT)	- +
SCSNC025075	1/4 UNC X 3/4 SOCKET CSK SCREW 160 In Stock for despatch	£36.00 (exc VAT) per HUND £43.20 (inc VAT)	- +
SCSNC025100	1/4 UNC X 1" SOCKET CSK SCREW 1252 In Stock for despatch	£9.36 (exc VAT) per HUND £11.23 (inc VAT)	- +
SCSNC025125	1/4 UNC X 1.1/4 SOCKET CSK SCREW 1565 In Stock for despatch	Price Unavailable	- +
SCSNC025150	1/4 UNC X 1.1/2 SOCKET CSK SCREW Out of Stock	£42.70 (exc VAT) per HUND £51.24 (inc VAT)	- +
SCSNC025150P	1/4"UNC X 1.1/2" CSK SKT SCREWS ZINC PLATED Out of Stock	£90.10 (exc VAT) per HUND £108.12 (inc VAT)	- +
SCSNC025175	1/4 UNC X 1.3/4 SOCKET CSK SCREW Out of Stock	£67.20 (exc VAT) per HUND £80.64 (inc VAT)	- +
SCSNC025200	1/4" UNC X 2" SOCKET CSK SCREW Out of Stock	£55.10 (exc VAT) per HUND £66.12 (inc VAT)	- +
SCSNC025300	1/4 UNC X 3" SOCKET CSK SCREW Out of Stock	£281.20 (exc VAT) per HUND £337.44 (inc VAT)	- +
SCSNC031050	5/16UNC X 1/2 SOCKET CSK SCREW 50 In Stock for despatch	£35.30 (exc VAT) per HUND £42.36 (inc VAT)	- +
SCSNC031061	5/16 UNC X 5/8" SOCKET CSK SCREW Out of Stock	£52.56 (exc VAT) per HUND £63.07 (inc VAT)	- +
SCSNC031075	5/16"UNC X 3/4" SOCKET C/SUNK SCREWS 195 In Stock for despatch	£28.00 (exc VAT) per HUND £33.60 (inc VAT)	- +
SCSNC031100	5/16 UNC X 1" SOCKET CSK SCREW Out of Stock	£28.10 (exc VAT) per HUND £33.72 (inc VAT)	- +
SCSNC031125	5/16 UNC X 1.1/4 SOCKET CSK SCREW 34 In Stock for despatch	£37.00 (exc VAT) per HUND £44.40 (inc VAT)	- +
SCSNC031150	5/16 UNC X 1.1/2 SOCKET CSK SCREW 54 In Stock for despatch	£71.90 (exc VAT) per HUND £86.28 (inc VAT)	- +
SCSNC031300	5/16 UNC X 3" SOCKET CSK SCREW Out of Stock	£184.90 (exc VAT) per HUND £221.88 (inc VAT)	- +
SCSNC031350	5/16 UNC X 3.1/2 SOCKET CSK SCREW Out of Stock	£216.60 (exc VAT) per HUND £259.92 (inc VAT)	- +
SCSNC037075	3/8 UNC X 3/4 SOCKET CSK SCREW 44 In Stock for despatch	£66.50 (exc VAT) per HUND £79.80 (inc VAT)	- +
SCSNC037087	3/8 UNC X 7/8 SOCKET CSK SCREW Out of Stock	£136.30 (exc VAT) per HUND £163.56 (inc VAT)	- +
SCSNC037100	3/8 UNC X 1" SOCKET CSK SCREW 87 In Stock for despatch	£54.50 (exc VAT) per HUND £65.40 (inc VAT)	- +
SCSNC037125	3/8 UNC X 1.1/4 SOCKET CSK SCREW 323 In Stock for despatch	£107.49 (exc VAT) per HUND £128.99 (inc VAT)	- +
SCSNC037150	3/8 UNC X 1.1/2 SOCKET CSK SCREW 41 In Stock for despatch	£134.40 (exc VAT) per HUND £161.28 (inc VAT)	- +
SCSNC037200	3/8 UNC X 2" SOCKET CSK SCREW Out of Stock	£139.70 (exc VAT) per HUND £167.64 (inc VAT)	- +
SCSNC04062	NO4-40UNC X 5/8" SOCKET CSK SCREW Out of Stock	£18.98 (exc VAT) per HUND £22.78 (inc VAT)	- +
SCSNC044150P	7/16 UNC X 1.1/2 SOCKET CSK SCREW ZINC 48 In Stock for despatch	Price Unavailable	- +
SCSNC044250	7/16 UNC X 2.1/2 SOCKET CSK SCREW Out of Stock	£2,150.00 (exc VAT) per HUND £2,580.00 (inc VAT)	- +
SCSNC050075	1/2 UNC X 3/4 SOCKET CSK SCREW 20 In Stock for despatch	Price Unavailable	- +
SCSNC050100	1/2 UNC X 1" SOCKET CSK SCREW 73 In Stock for despatch	£78.92 (exc VAT) per HUND £94.70 (inc VAT)	- +
SCSNC050100P	1/2 UNC X 1" SOCKET CSK SCREW ZINC PLATED 87 In Stock for despatch	£391.32 (exc VAT) per HUND £469.58 (inc VAT)	- +
SCSNC050125	1/2 UNC X 1.1/4 SOCKET CSK SCREW 168 In Stock for despatch	£81.90 (exc VAT) per HUND £98.28 (inc VAT)	- +
SCSNC050150	1/2 UNC X 1.1/2 SOCKET CSK SCREW 14 In Stock for despatch	£116.62 (exc VAT) per HUND £139.94 (inc VAT)	- +
SCSNC050175	1/2"UNC X 1.3/4" CSK HEAD SOCKET SCREW 100 In Stock for despatch	£144.70 (exc VAT) per HUND £173.64 (inc VAT)	- +
SCSNC050200	1/2 UNC X 2" SOCKET CSK SCREW 88 In Stock for despatch	£161.60 (exc VAT) per HUND £193.92 (inc VAT)	- +
SCSNC050225	1/2 UNC X 2.1/4 SOCKET CSK SCREW 50 In Stock for despatch	£141.30 (exc VAT) per HUND £169.56 (inc VAT)	- +
SCSNC050300	1/2 UNC X 3" SOCKET CSK SCREW Out of Stock	£974.00 (exc VAT) per HUND £1,168.80 (inc VAT)	- +
SCSNC050400	1/2 UNC X 4" SOCKET CSK SCREW Out of Stock	£421.20 (exc VAT) per HUND £505.44 (inc VAT)	- +
SCSNC05075	1/2 UNC X 3/4 SOCKET CSK SCREW Out of Stock	£119.90 (exc VAT) per HUND £143.88 (inc VAT)	- +
SCSNC06025	NO6 UNC X 1/4 SOCKET CSK SCREW 40 In Stock for despatch	£13.68 (exc VAT) per HUND £16.42 (inc VAT)	- +
SCSNC06031	NO6 UNC X 5/16 SOCKET CSK SCREW Out of Stock	£6.20 (exc VAT) per HUND £7.44 (inc VAT)	- +
SCSNC06037	NO6 UNC X 3/8 SOCKET CSK SCREW 186 In Stock for despatch	£14.00 (exc VAT) per HUND £16.80 (inc VAT)	- +
SCSNC06050	NO6 UNC X 1/2 SOCKET CSK SCREW Out of Stock	£28.10 (exc VAT) per HUND £33.72 (inc VAT)	- +
SCSNC062150	5/8 UNC X 1.1/2 SOCKET CSK SCREW Out of Stock	£338.46 (exc VAT) per HUND £406.15 (inc VAT)	- +
SCSNC062150P	5/8 UNC X 1.1/2 SOCKET CSK SCREW ZINC PLATED 30 In Stock for despatch	£343.50 (exc VAT) per HUND £412.20 (inc VAT)	- +
SCSNC062225	5/8"UNC X 2.1/4" CSK HEAD SOCKET SCREW 75 In Stock for despatch	£411.20 (exc VAT) per HUND £493.44 (inc VAT)	- +
SCSNC062250	5/8"UNC X 2.1/2" CSK HD SOCKET SCREWS 50 In Stock for despatch	£850.00 (exc VAT) per HUND £1,020.00 (inc VAT)	- +
SCSNC075150	3/4 UNC X 1.1/2" SOCKET CSK SCREW 28 In Stock for despatch	£649.60 (exc VAT) per HUND £779.52 (inc VAT)	- +
SCSNC075200	3/4 UNC X 2" SOCKET CSK SCREW Out of Stock	£853.30 (exc VAT) per HUND £1,023.96 (inc VAT)	- +
SCSNC075225	3/4 UNC X 2.1/4 SOCKET CSK SCREW 11 In Stock for despatch	Price Unavailable	- +
SCSNC075300	3/4 UNC X 3" SOCKET CSK SCREW 3 In Stock for despatch	£1,120.00 (exc VAT) per HUND £1,344.00 (inc VAT)	- +
SCSNC08050	NO8 UNC X 1/2 SOCKET CSK SCREW 100 In Stock for despatch	£22.00 (exc VAT) per HUND £26.40 (inc VAT)	- +
SCSNC08062	NO8 UNC X 5/8 SOCKET CSK SCREW Out of Stock	£19.10 (exc VAT) per HUND £22.92 (inc VAT)	- +
SCSNC08075	NO8 UNC X 3/4 SOCKET CSK SCREW Out of Stock	£34.70 (exc VAT) per HUND £41.64 (inc VAT)	- +
SCSNC087300	7/8"UNC X 3" CSK HEAD SOCKET SCREW 20 In Stock for despatch	£1,990.00 (exc VAT) per HUND £2,388.00 (inc VAT)	- +
SCSNC087700	7/8 UNC X 7" SOCKET CSK SCREW Out of Stock	£13,719.60 (exc VAT) per HUND £16,463.52 (inc VAT)	- +
SCSNC10037	NO10 UNC X 3/8 SOCKET CSK SCREW 85 In Stock for despatch	£30.00 (exc VAT) per HUND £36.00 (inc VAT)	- +
SCSNC10050	NO10 UNC X 1/2 SOCKET CSK SCREW 205 In Stock for despatch	£21.80 (exc VAT) per HUND £26.16 (inc VAT)	- +
SCSNC10062	NO10 UNC X 5/8 SOCKET CSK SCREW 6 In Stock for despatch	Price Unavailable	- +
SCSNC10075	NO10 UNC X 3/4 SOCKET CSK SCREW 118 In Stock for despatch	£26.20 (exc VAT) per HUND £31.44 (inc VAT)	- +
SCSNC100800	1" UNC X 8" SOCKET CSK SCREW Out of Stock	£7,026.60 (exc VAT) per HUND £8,431.92 (inc VAT)	- +
SCSNC10087	NO10 UNC X 7/8 SOCKET CSK SCREW Out of Stock	£22.50 (exc VAT) per HUND £27.00 (inc VAT)	- +
SCSNC12050	NO12 UNC X 1/2 SOCKET CSK SCREW Out of Stock	£336.10 (exc VAT) per HUND £403.32 (inc VAT)	- +
SCSNC12050P	NO12 UNC X 1/2 SOCKET CSK SCREW ZINC PLATED Out of Stock	£427.20 (exc VAT) per HUND £512.64 (inc VAT)	- +

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