UNF THREAD

Descriptions

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.

Specifications

No detailed specifications are available for this product.

Downloads

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Code	Description	Price	Quantity
SCNF025025	1/4 UNF X 1/4 SOCKET CAPSCREW 92 In Stock for dispatch	Price Unavailable	- +
SCNF025050	1/4 UNF X 1/2 SOCKET CAPSCREW Out of Stock	£76.70 (exc VAT) per HUND £92.04 (inc VAT) per HUND	- +
SCNF025062	1/4 UNF X 5/8 SOCKET CAPSCREW 12 In Stock for dispatch	£30.40 (exc VAT) per HUND £36.48 (inc VAT) per HUND	- +
SCNF025075	1/4 UNF X 3/4 SOCKET CAPSCREW 29 In Stock for dispatch	£25.00 (exc VAT) per HUND £30.00 (inc VAT) per HUND	- +
SCNF025087	1/4 UNF X 7/8 SOCKET CAPSCREW 1936 SERIES Out of Stock	£36.40 (exc VAT) per HUND £43.68 (inc VAT) per HUND	- +
SCNF025100	1/4 UNF X 1" SOCKET CAPSCREW 108 In Stock for dispatch	£40.40 (exc VAT) per HUND £48.48 (inc VAT) per HUND	- +
SCNF025125	1/4 UNF X 1.1/4 SOCKET CAPSCREW 300 In Stock for dispatch	£33.80 (exc VAT) per HUND £40.56 (inc VAT) per HUND	- +
SCNF025150	1/4 UNF X 1.1/2 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF025175	1/4 UNF X 1.3/4 SOCKET CAPSCREW Out of Stock	£28.10 (exc VAT) per HUND £33.72 (inc VAT) per HUND	- +
SCNF025200	1/4 UNF X 2" SOCKET CAPSCREW 80 In Stock for dispatch	£44.70 (exc VAT) per HUND £53.64 (inc VAT) per HUND	- +
SCNF025250	1/4 UNF X 2.1/2 SOCKET HEAD CAPSCREWS 190 In Stock for dispatch	£51.10 (exc VAT) per HUND £61.32 (inc VAT) per HUND	- +
SCNF025300	1/4 UNF X 3" SOCKET CAPSCREW Out of Stock	£1,500.00 (exc VAT) per HUND £1,800.00 (inc VAT) per HUND	- +
SCNF031050	5/16 UNF X 1/2 SOCKET CAPSCREW Out of Stock	£161.50 (exc VAT) per HUND £193.80 (inc VAT) per HUND	- +
SCNF031075	5/16 UNF X 3/4 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF031075P	5/16"UNF X 3/4" SOCKET HEAD CAPSCREW ZINC COATED 44 In Stock for dispatch	£76.10 (exc VAT) per HUND £91.32 (inc VAT) per HUND	- +
SCNF031087	5/16 UNF X 7/8 SOCKET CAPSCREW 6 In Stock for dispatch	Price Unavailable	- +
SCNF031100	5/16 UNF X 1" SOCKET CAPSCREW 304 In Stock for dispatch	£48.80 (exc VAT) per HUND £58.56 (inc VAT) per HUND	- +
SCNF031100PL	5/16 UNF X 1" SOCKET CAPSCREW PATCH LOCKED Out of Stock	£255.50 (exc VAT) per HUND £306.60 (inc VAT) per HUND	- +
SCNF031125	5/16 UNF X 1.1/4 SOCKET CAPSCREW Out of Stock	£23.89 (exc VAT) per HUND £28.67 (inc VAT) per HUND	- +
SCNF031150	5/16 UNF X 1.1/2 SOCKET CAPSCREW 200 In Stock for dispatch	£58.60 (exc VAT) per HUND £70.32 (inc VAT) per HUND	- +
SCNF031150P	5/16 UNF X 1.1/2 SOCKET CAPSCREW ZINC PLATED Out of Stock	£126.70 (exc VAT) per HUND £152.04 (inc VAT) per HUND	- +
SCNF031175	5/16 UNF X 1.3/4 SOCKET CAPSCREW 61 In Stock for dispatch	£57.82 (exc VAT) per HUND £69.38 (inc VAT) per HUND	- +
SCNF031200	5/16 UNF X 2" SOCKET CAPSCREW 20 In Stock for dispatch	£69.26 (exc VAT) per HUND £83.11 (inc VAT) per HUND	- +
SCNF031225	5/16 UNF X 2.1/4 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF031250	5/16 UNF X 2.1/2 SOCKET CAPSCREW 1 In Stock for dispatch	Price Unavailable	- +
SCNF031300	5/16 UNF X 3" SOCKET CAPSCREW 36 In Stock for dispatch	£94.20 (exc VAT) per HUND £113.04 (inc VAT) per HUND	- +
SCNF037050	3/8 UNF X 1/2 SOCKET CAPSCREW 198 In Stock for dispatch	£104.30 (exc VAT) per HUND £125.16 (inc VAT) per HUND	- +
SCNF037062	3/8 UNF X 5/8 SOCKET CAPSCREW 200 In Stock for dispatch	£93.50 (exc VAT) per HUND £112.20 (inc VAT) per HUND	- +
SCNF037075	3/8 UNF X 3/4 SOCKET CAPSCREW 28 In Stock for dispatch	£109.80 (exc VAT) per HUND £131.76 (inc VAT) per HUND	- +
SCNF037087	3/8 UNF X 7/8 SOCKET CAPSCREW 25 In Stock for dispatch	Price Unavailable	- +
SCNF037100	3/8 UNF X 1" SOCKET CAPSCREW 1 In Stock for dispatch	£89.70 (exc VAT) per HUND £107.64 (inc VAT) per HUND	- +
SCNF037125	3/8 UNF X 1.1/4 SOCKET CAPSCREW Out of Stock	£135.50 (exc VAT) per HUND £162.60 (inc VAT) per HUND	- +
SCNF037150	3/8 UNF X 1.1/2 SOCKET CAPSCREW 103 In Stock for dispatch	£131.00 (exc VAT) per HUND £157.20 (inc VAT) per HUND	- +
SCNF037175	3/8 UNF X 1.3/4 SOCKET CAPSCREW 20 In Stock for dispatch	£133.10 (exc VAT) per HUND £159.72 (inc VAT) per HUND	- +
SCNF037175UNB	3/8 UNF X 1.3/4 SOCKET CAPSCREW UNBRAKO 18 In Stock for dispatch	£326.40 (exc VAT) per HUND £391.68 (inc VAT) per HUND	- +
SCNF037200	3/8 UNF X 2" SOCKET CAPSCREW 44 In Stock for dispatch	£111.18 (exc VAT) per HUND £133.42 (inc VAT) per HUND	- +
SCNF037200UNB	3/8 UNF X 2" SOCKET CAPSCREW UNBRAKO Out of Stock	£348.63 (exc VAT) per HUND £418.36 (inc VAT) per HUND	- +
SCNF037225	3/8"UNF X 2.1/4" SOCKET HEAD CAPSCREW 38 In Stock for dispatch	£100.30 (exc VAT) per HUND £120.36 (inc VAT) per HUND	- +
SCNF037250	3/8 UNF X 2.1/2 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF037300	3/8 UNF X 3" SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF037350	3/8 UNF X 3.1/2 SOCKET CAPSCREW 20 In Stock for dispatch	£212.90 (exc VAT) per HUND £255.48 (inc VAT) per HUND	- +
SCNF037400	3/8 UNF X 4" SOCKET CAPSCREW Out of Stock	£372.40 (exc VAT) per HUND £446.88 (inc VAT) per HUND	- +
SCNF04062	NO 4 UNF X 5/8 SOCKET CAPSCREW Out of Stock	£117.60 (exc VAT) per HUND £141.12 (inc VAT) per HUND	- +
SCNF044100	7/16 UNF X 1" SOCKET CAPSCREW 63 In Stock for dispatch	£182.20 (exc VAT) per HUND £218.64 (inc VAT) per HUND	- +
SCNF044125P	7/16 UNF X 1.1/4 SOCKET CAPSCREW ZINC PLATED Out of Stock	£677.60 (exc VAT) per HUND £813.12 (inc VAT) per HUND	- +
SCNF044150	7/16 UNF X 1.1/2 SOCKET CAPSCREW 3 In Stock for dispatch	£126.05 (exc VAT) per HUND £151.26 (inc VAT) per HUND	- +
SCNF044175	7/16 UNF X 1.3/4 SOCKET CAPSCREW 30 In Stock for dispatch	£306.10 (exc VAT) per HUND £367.32 (inc VAT) per HUND	- +
SCNF044200	7/16 UNF X 2" SOCKET CAPSCREW Out of Stock	£365.30 (exc VAT) per HUND £438.36 (inc VAT) per HUND	- +
SCNF044300	7/16 UNF X 3" SOCKET CAPSCREW Out of Stock	£3,800.00 (exc VAT) per HUND £4,560.00 (inc VAT) per HUND	- +
SCNF044400	7/16 UNF X 4" SOCKET CAPSCREWS S/C 50 In Stock for dispatch	£891.30 (exc VAT) per HUND £1,069.56 (inc VAT) per HUND	- +
SCNF044400-FT	7/16" UNF X 4" SKT CAPS FULL THREAD SELF COLOUR Out of Stock	£94.00 (exc VAT) per EACH £112.80 (inc VAT) per EACH	- +
SCNF050075	1/2 UNF X 3/4 SOCKET CAPSCREW Out of Stock	£157.90 (exc VAT) per HUND £189.48 (inc VAT) per HUND	- +
SCNF050100	1/2 UNF X 1" SOCKET CAPSCREW 76 In Stock for dispatch	£96.50 (exc VAT) per HUND £115.80 (inc VAT) per HUND	- +
SCNF050100P	1/2 UNF X 1" SOCKET CAPSCREW ZINC PLATED Out of Stock	£314.20 (exc VAT) per HUND £377.04 (inc VAT) per HUND	- +
SCNF050125	1/2 UNF X 1.1/4 SOCKET CAPSCREW 104 In Stock for dispatch	£245.40 (exc VAT) per HUND £294.48 (inc VAT) per HUND	- +
SCNF050150	1/2 UNF X 1.1/2 SOCKET CAPSCREW Out of Stock	£390.00 (exc VAT) per HUND £468.00 (inc VAT) per HUND	- +
SCNF050175	1/2 UNF X 1.3/4 SOCKET CAPSCREW 20 In Stock for dispatch	£456.90 (exc VAT) per HUND £548.28 (inc VAT) per HUND	- +
SCNF050200	1/2 UNF X 2" SOCKET CAPSCREW Out of Stock	£509.30 (exc VAT) per HUND £611.16 (inc VAT) per HUND	- +
SCNF050225	1/2 UNF X 2.1/4 SOCKET CAPSCREW 27 In Stock for dispatch	Price Unavailable	- +
SCNF050225UNB	1/2 UNF X 2.1/4 SOCKET CAPSCREW UNBRAKO 17 In Stock for dispatch	£788.40 (exc VAT) per HUND £946.08 (inc VAT) per HUND	- +
SCNF050250	1/2 UNF X 2.1/2 SOCKET CAPSCREW 32 In Stock for dispatch	£218.60 (exc VAT) per HUND £262.32 (inc VAT) per HUND	- +
SCNF050250FL600	1/2 UNF X 2.1/2 SOCKET CAPSCREW 600h ZINC FLAKE 16 In Stock for dispatch	£2,390.00 (exc VAT) per HUND £2,868.00 (inc VAT) per HUND	- +
SCNF050250ZY	1/2 UNF X 2.1/2 SOCKET CAPSCREW ZINC PLATED 89 In Stock for dispatch	£679.09 (exc VAT) per HUND £814.91 (inc VAT) per HUND	- +
SCNF050300	1/2 UNF X 3" SOCKET CAPSCREW Out of Stock	£431.80 (exc VAT) per HUND £518.16 (inc VAT) per HUND	- +
SCNF050300ZY	1/2 UNF X 3" SOCKET CAPSCREW ZINC & YELLOW 2 In Stock for dispatch	£591.20 (exc VAT) per HUND £709.44 (inc VAT) per HUND	- +
SCNF050325	1/2 UNF X 3.1/4 SOCKET CAPSCREW 17 In Stock for dispatch	£478.60 (exc VAT) per HUND £574.32 (inc VAT) per HUND	- +
SCNF050325FL600	1/2 UNF X 3.1/4 SOCKET CAPSCREW 600h ZINC FLAKE 7 In Stock for dispatch	£7,021.00 (exc VAT) per HUND £8,425.20 (inc VAT) per HUND	- +
SCNF050325ZY	1/2 UNF X 3.1/4 SOCKET CAPSCREW ZINC PLATED 66 In Stock for dispatch	£1,437.83 (exc VAT) per HUND £1,725.40 (inc VAT) per HUND	- +
SCNF050350	1/2 UNF X 3.1/2 SOCKET CAPSCREW 7 In Stock for dispatch	£574.70 (exc VAT) per HUND £689.64 (inc VAT) per HUND	- +
SCNF050400	1/2 UNF X 4" SOCKET CAPSCREW Out of Stock	£1,456.70 (exc VAT) per HUND £1,748.04 (inc VAT) per HUND	- +
SCNF050500	1/2"UNF X 5" SOCKET HEAD CAPSCREW 15 In Stock for dispatch	£687.70 (exc VAT) per HUND £825.24 (inc VAT) per HUND	- +
SCNF062100	5/8"UNF X 1" SOCKET HEAD CAPSCREWS 45 In Stock for dispatch	£183.10 (exc VAT) per HUND £219.72 (inc VAT) per HUND	- +
SCNF062125	5/8 UNF X 1.1/4 SOCKET CAPSCREW 1936 SERIES 5 In Stock for dispatch	£312.71 (exc VAT) per HUND £375.25 (inc VAT) per HUND	- +
SCNF062150	5/8 UNF X 1.1/2 SOCKET CAPSCREW Out of Stock	£580.00 (exc VAT) per HUND £696.00 (inc VAT) per HUND	- +
SCNF062175	5/8 UNF X 1.3/4 SOCKET CAPSCREW Out of Stock	£254.90 (exc VAT) per HUND £305.88 (inc VAT) per HUND	- +
SCNF062200	5/8 UNF X 2 SOCKET CAPSCREW 17 In Stock for dispatch	£518.20 (exc VAT) per HUND £621.84 (inc VAT) per HUND	- +
SCNF062225	5/8 UNF X 2.1/4 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF062250	5/8 UNF X 2.1/2 SOCKET CAPSCREW Out of Stock	£447.70 (exc VAT) per HUND £537.24 (inc VAT) per HUND	- +
SCNF062250FL600	5/8" UNF X 2.1/2 SOCKET CAPSCREW 600h ZINC FLAKE 46 In Stock for dispatch	£1,912.70 (exc VAT) per HUND £2,295.24 (inc VAT) per HUND	- +
SCNF062250ZY	5/8 UNF X 2.1/2 SOCKET CAPSCREWS ZINC PLATED 9 In Stock for dispatch	£638.03 (exc VAT) per HUND £765.64 (inc VAT) per HUND	- +
SCNF062275	5/8 UNF X 2.3/4 SOCKET CAPSCREW Out of Stock	£1,108.30 (exc VAT) per HUND £1,329.96 (inc VAT) per HUND	- +
SCNF062300	5/8 UNF X 3" SOCKET CAPSCREW Out of Stock	£1,031.20 (exc VAT) per HUND £1,237.44 (inc VAT) per HUND	- +
SCNF062375	5/8 UNF X 3.3/4 SOCKET CAPSCREW Out of Stock	£1,373.80 (exc VAT) per HUND £1,648.56 (inc VAT) per HUND	- +
SCNF062400	5/8 UNF X 4" SOCKET CAPSCREW 51 In Stock for dispatch	£480.98 (exc VAT) per HUND £577.18 (inc VAT) per HUND	- +
SCNF062400P	5/8 UNF X 4 SOCKET CAPSCREW ZINC PLATED 388 In Stock for dispatch	£481.50 (exc VAT) per HUND £577.80 (inc VAT) per HUND	- +
SCNF062550	5/8 UNF X 5.1/2 SOCKET CAPSCREW Out of Stock	£2,552.90 (exc VAT) per HUND £3,063.48 (inc VAT) per HUND	- +
SCNF062700	5/8 UNF X 7" SOCKET CAPSCREW 30 In Stock for dispatch	£3,250.00 (exc VAT) per HUND £3,900.00 (inc VAT) per HUND	- +
SCNF062700P	5/8 UNF X 7" SOCKET CAPSCREW ZINC PLATED 25 In Stock for dispatch	£5,250.00 (exc VAT) per HUND £6,300.00 (inc VAT) per HUND	- +
SCNF062850ZY	5/8 UNF X 8.1/2 SOCKET CAPSCREW ZINC & YELLOW Out of Stock	£7,300.00 (exc VAT) per HUND £8,760.00 (inc VAT) per HUND	- +
SCNF062900	5/8 UNF X 9" SOCKET CAPSCREW 10 In Stock for dispatch	£8,950.00 (exc VAT) per HUND £10,740.00 (inc VAT) per HUND	- +
SCNF062900FL600	5/8" UNF X 9" SOCKET HEAD CAPSCREW 600h ZINC FLAKE 38 In Stock for dispatch	£9,300.40 (exc VAT) per HUND £11,160.48 (inc VAT) per HUND	- +
SCNF062900ZY	5/8 UNF X 9" SOCKET CAPSCREW ZINC PLATED 3 In Stock for dispatch	£6,452.95 (exc VAT) per HUND £7,743.54 (inc VAT) per HUND	- +
SCNF075125	3/4"UNF X 1.1/4" SOCKET HEAD CAPSCREWS Out of Stock	£750.40 (exc VAT) per HUND £900.48 (inc VAT) per HUND	- +
SCNF075175	3/4 UNF X 1.3/4 SOCKET CAPSCREW 1 In Stock for dispatch	£644.10 (exc VAT) per HUND £772.92 (inc VAT) per HUND	- +
SCNF075200	3/4 UNF X 2" SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF075250	3/4 UNF X 2.1/2 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF075325	3/4 UNF X 3.1/4 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF075400	3/4"UNF X 4" SOCKET HEAD CAPSCREWS Out of Stock	£1,430.00 (exc VAT) per HUND £1,716.00 (inc VAT) per HUND	- +
SCNF075500	3/4"UNF X 5" SOCKET HEAD CAPSCREW Out of Stock	£2,852.70 (exc VAT) per HUND £3,423.24 (inc VAT) per HUND	- +
SCNF075600	3/4 UNF X 6" SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF075750	3/4 UNF X 7.1/2" SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF08050	No8-32UNF X 1/2 SOCKET CAPSCREW 70 In Stock for dispatch	£26.60 (exc VAT) per HUND £31.92 (inc VAT) per HUND	- +
SCNF08100	NO 8 UNF X 1" SOCKET CAPSCREW 200 In Stock for dispatch	£20.00 (exc VAT) per HUND £24.00 (inc VAT) per HUND	- +
SCNF08150	NO 8 UNF X 1.1/2 SOCKET CAPSCREW 138 In Stock for dispatch	Price Unavailable	- +
SCNF087400	7/8 UNF X 4" SOCKET CAPSCREW Out of Stock	£7,666.60 (exc VAT) per HUND £9,199.92 (inc VAT) per HUND	- +
SCNF10019	NO10-32UNF X 3/16 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF100225	1"-12 UNF X 2.1/4 SOCKET CAPS SELF COLOUR FULL THREAD 6 In Stock for dispatch	£2,523.50 (exc VAT) per HUND £3,028.20 (inc VAT) per HUND	- +
SCNF10031	NO10-32UNF X 5/16 SOCKET HD CAPSCREW 200 In Stock for dispatch	£13.00 (exc VAT) per HUND £15.60 (inc VAT) per HUND	- +
SCNF10037	NO10 UNF X 3/8 SOCKET CAPSCREW 46 In Stock for dispatch	£27.50 (exc VAT) per HUND £33.00 (inc VAT) per HUND	- +
SCNF10050	NO10 UNF X 1/2 SOCKET CAPSCREW 1012 In Stock for dispatch	£38.00 (exc VAT) per HUND £45.60 (inc VAT) per HUND	- +
SCNF10062	NO10 UNF X 5/8 SOCKET CAPSCREW 100 In Stock for dispatch	£17.79 (exc VAT) per HUND £21.35 (inc VAT) per HUND	- +
SCNF100700	1" UNF X 7" SOCKET CAPSCREW Out of Stock	£7,256.90 (exc VAT) per HUND £8,708.28 (inc VAT) per HUND	- +
SCNF10075	NO10 UNF X 3/4 SOCKET CAPSCREW 66 In Stock for dispatch	£30.80 (exc VAT) per HUND £36.96 (inc VAT) per HUND	- +
SCNF10087	NO10 UNF X 7/8 SOCKET CAPSCREW 100 In Stock for dispatch	£27.80 (exc VAT) per HUND £33.36 (inc VAT) per HUND	- +
SCNF10100	NO10 UNF X 1" SOCKET CAPSCREW 342 In Stock for dispatch	£22.70 (exc VAT) per HUND £27.24 (inc VAT) per HUND	- +
SCNF10112	NO10 UNF X 1.1/8 SOCKET CAPSCREW Out of Stock	£87.10 (exc VAT) per HUND £104.52 (inc VAT) per HUND	- +
SCNF10125	NO10 UNF X 1.1/4 SOCKET CAPSCREW 34 In Stock for dispatch	£26.90 (exc VAT) per HUND £32.28 (inc VAT) per HUND	- +
SCNF10150	NO10 UNF X 1.1/2 SOCKET CAPSCREW Out of Stock	Price Unavailable	- +
SCNF125325	1.1/4UNF X 3.1/4 SOCKET CAPSCREW Out of Stock	£1,673.60 (exc VAT) per HUND £2,008.32 (inc VAT) per HUND	- +

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