BS 4320 Black Mild Steel Washer Form G
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Product Information
Dimensions: Millimeters (mm)
Material: Steel
Finish: Self Colour
With ISO9001: 2015 approval incorporating Design Status, our qualified engineering staff are able to offer a completely free of charge engineering service and are available to assist with part selection, custom design, application requirements, material selection and more.
Applications are discussed in-depth, first-off design data and drawings are submitted for approval to ensure our customers are provided with the correct design, first time. However, on those rare occasions when modifications are necessary, our no-tooling process and flexible manufacturing procedures means the production of prototypes is easily and economically achieved without onerous tooling charges and long lead times.
At TFC we realise that Quality runs through the entire business, not just our products. We have continually invested in the right people to provide the superior market knowledge and customer service.
Our supply chain partners, from manufacturers to logistics and information technology are carefully chosen to ÿt our commitment to quality
Quality assured since 1981
ISO 9001:2015
Aerospace AS9100C & AS9120A
All products are batch traceable and can be supplied in accordance with REACH, RoHs and Weee.
Certificates of Conformity are available on request and Full material certification is also available on many items.
EN 1.4404 is an austenitic
chromium-nickel stainless steel containing molybdenum. This stainless steel also has extra low carbon content in order to reduce the risk of chromium-carbide precipitation. EN 1.4404 is one of the most commonly used stainless steel grades and Nord-Lock washers made of EN 1.4404 are suitable for most applications where no chlorides or acids are present.
| Bolt | Bolt Size | øi [mm] | øo [mm] | Thickness T [mm | Min Packaging [Pairs] | Approx Weight kg/100 Pairs | ||
|---|---|---|---|---|---|---|---|---|
| Metric | UNC | |||||||
| NL3ss | M3 | #5 | 3,4 | 7,0 | 2,2 | 200 | 0,04 | NL3 ss NL8ssØi ±0,1 mmNL10 ss NL42ssØi ±0,2 mmNL45ss NL80ssØ I +0,5 / -0,0 mm |
| NL3,5ss | M3,5 | #6 | 3,9 | 7,6 | 2,2 | 200 | 0,04 | |
| NL3,5spss | M3,5 | #6 | 3,9 | 9,0 | 2,2 | 200 | 0,07 | |
| NL4ss | M4 | #8 | 4,4 | 7,6 | 2,2 | 200 | 0,04 | |
| NL4spss | M4 | #8 | 4,4 | 9,0 | 2,2 | 200 | 0,07 | |
| NL5ss | M5 | #10 | 5,4 | 9,0 | 2,2 | 200 | 0,06 | |
| NL5spss | M5 | #10 | 5,4 | 10,8 | 2,2 | 200 | 0,11 | |
| NL6ss | M6 | – | 6,5 | 10,8 | 2,2 | 200 | 0,09 | NL3ss NL24ssØo ± 0,2 mmNL27ss NL42ssØo ± 0,3 mmNL45 ss NL80ssØo +0,0 / -2,0 mm |
| NL6spss | M6 | – | 6,5 | 13,5 | 2,0 | 200 | 0,16 | |
| NL1/4ss | – | 1/4″ | 7,2 | 11,5 | 2,2 | 200 | 0,09 | |
| NL1/4spss | – | 1/4″ | 7,2 | 13,5 | 2,2 | 200 | 0,15 | |
| NL8ss | M8 | 5/16″ | 8,7 | 13,5 | 2,0 | 200 | 0,12 | |
| NL8spss | M8 | 5/16″ | 8,7 | 16,6 | 2,0 | 200 | 0,22 | |
| NL3/8ss | – | 3/8″ | 10,3 | 16,6 | 2,0 | 200 | 0,19 | |
| NL3/8spss | – | 3/8″ | 10,3 | 21,0 | 2,0 | 200 | 0,38 | |
| NL10ss | M10 | – | 10,7 | 16,6 | 2,0 | 200 | 0,18 | |
| NL10spss | M10 | – | 10,7 | 21,0 | 2,0 | 200 | 0,37 | NL3ss NL24ssT ± 0,25 mmNL27ss NL42ssT +0,0 / -0,5 mmNL45ss NL80ssT ± 0,75 mm |
| NL11s s | M11 | 7/16″ | 11,4 | 18,5 | 2,2 | 200 | 0,26 | |
| NL12ss | M12 | – | 13,0 | 19,5 | 2,0 | 200 | 0,23 | |
| NL12spss | M12 | – | 13,0 | 25,4 | 3,0 | 100 | 0,82 | |
| NL1/2ss | – | 1/2″ | 13,5 | 19,5 | 2,0 | 200 | 0,24 | |
| NL1/2spss | – | 1/2″ | 13,5 | 25,4 | 3,2 | 100 | 0,80 | |
| NL14ss | M14 | 9/16″ | 15,2 | 23,0 | 3,0 | 100 | 0,49 | |
| NL14spss | M14 | 9/16″ | 15,2 | 30,7 | 3,2 | 100 | 1,31 | |
| NL16ss | M16 | 5/8″ | 17,0 | 25,4 | 3,0 | 100 | 0,59 | |
| NL16spss | M16 | 5/8″ | 17,0 | 30,7 | 3,2 | 100 | 1,13 | |
| NL18ss | M18 | – | 19,5 | 29,0 | 3,2 | 100 | 0,80 | |
| NL18spss | M18 | – | 19,5 | 34,5 | 3,2 | 100 | 1,56 | |
| NL3/4ss | – | 3/4″ | 20,0 | 30,7 | 3,2 | 100 | 0,96 | |
| NL3/4spss | – | 3/4″ | 20,0 | 39,0 | 3,2 | 100 | 2,10 | |
| NL20ss | M20 | – | 21,4 | 30,7 | 3,0 | 100 | 0,82 | |
| NL20spss | M20 | – | 21,4 | 39,0 | 3,2 | 100 | 2,06 | |
| NL22ss | M22 | 7/8″ | 23,4 | 34,5 | 3,2 | 100 | 1,23 | |
| NL22spss | M22 | 7/8″ | 23,4 | 42,0 | 3,2 | 50 | 2,23 | |
| NL24ss | M24 | – | 25,3 | 39,0 | 3,2 | 100 | 1,52 | |
| NL24spss | M24 | – | 25,3 | 48,5 | 3,2 | 50 | 3,50 | |
| NL1ss | – | 1″ | 27,9 | 39,0 | 3,2 | 100 | 1,42 | |
| NL1spss | – | 1″ | 27,9 | 48,5 | 3,2 | 50 | 3,22 | |
| NL27ss | M27 | – | 28,4 | 42,0 | 6,8 | 50 | 3,45 | |
| NL27spss | M27 | – | 28,4 | 48,5 | 6,8 | 25 | 5,85 | |
| NL30ss | M30 | 1 1/8″ | 31,4 | 47,0 | 6,8 | 50 | 4,43 | |
| NL30spss | M30 | 1 1/8 | 31,4 | 58,5 | 6,8 | 25 | 9,53 | |
| NL33ss | M33 | 1 1/4″ | 34,4 | 48,5 | 6,8 | 25 | 4,25 | |
| NL36ss | M36 | 1 3/8 | 37,4 | 55,0 | 6,8 | 25 | 5,96 | |
| NL39ss | M39 | 1 1/2 | 40,4 | 58,5 | 6,8 | 25 | 6,74 | |
| NL42ss | M42 | – | 43,2 | 63,0 | 6,8 | 25 | 7,96 | |
| NL45ss | M45 | 1 3/4 | 46,2 | 70,0 | 6,8 | 25 | 10,20 | |
| NL48ss | M48 | – | 49,6 | 75,0 | 6,8 | 25 | 12,00 | |
| NL52ss | M52 | 2 | 53,6 | 80,0 | 9,0 | 1 | 20,10 | |
| NL56ss | M56 | 2 1/4 | 59,1 | 85,0 | 9,0 | 1 | 21,30 | |
| NL60ss | M60 | – | 63,1 | 90,0 | 9,0 | 1 | 23,50 | |
| NL64ss | M64 | 2 1/2 | 67,1 | 95,0 | 9,0 | 1 | 25,80 | |
| NL68ss | M68 | – | 71,1 | 100,0 | 9,0 | 1 | 28,20 | |
| NL72ss | M72 | – | 75,1 | 105,0 | 9,0 | 1 | 30,70 | |
| NL76ss | M76 | 3 | 79,1 | 110,0 | 9,0 | 1 | 33,30 | |
| NL80ss | M80 | 3 1/8 | 83,1 | 115,0 | 9,0 | 1 | 36,00 | |
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