The tolerance of the side surface runout of the gear blank. The most commonly used tolerancing system for shafts and holes is detailed in ISO 286-1 & 286-2. Mechanical tolerance. 4Max. Precision: N9 Material: S45C Series SUS/SUSA Stainless Steel Spur Gears m1 ～4 Page 126 Precision: N8 Material: SUS303 SUSF F-Loc Gears m0. In the MAGIC trial, MMRD and high MSI were associated with a positive prognostic effect in patients treated with surgery alone and a differentially negative prognostic effect in patients treated with chemotherapy. The tolerance of the shaft bore dimension deviation of the gear blank. Surface Finish — Sides and bottom of keyways shall not exceed 250 micro inches. 3 16 15. 33 Spline groove twist is measured at an arbitrary 100mm section of the effective shaft length. of the seal is produced slightly larger then the bore size. Luck & Regards, Ted Mooney, P. Office of the chief of naval operations (opnav)Opnav n9. surface. ) while a limit-based. 5 400 800 ±0. 11 14 13. Modi˜cation standads | Page 1421 DIN 6885* Keyway, key details Extract Page 2 heavy type for machine tools d b P9 / JS9 Hub keyway b P9 / N9 Shaft keyway h t 1 = d + t 2 t 2 t 3 = d – t 4 t 4 11 4 4 4 12,1 1,1 +0,1 8 3 +0,1 12 4 4 4 13,1 1,1 +0,1 9 3 +0,1 13 5 5 5 14,3 1,3 +0,1 9,2 3,8 +0,1 14 55 5 15,3 1,3 +0,1 10,2 3,8 +0,1 15 5 5 16,3 1,3 +0,1 11,2 3,8 +0,1PFEIFER INDUSTRIES, LLC. ) Unit: µm Material Tolerance SUJ2 13 SUS440C 33 Spline groove twist is measured at an arbitrary 100mm section of the effective shaft length. However, DHZ-N9-G, ZN-9-G and iP-N9-G contents increased respectively by 18 %, 33 % and 37 % in roots of water deficit-stressed M plants,. © 1996 Nature Publishing Group letters • • + 1 •A powerful tooling is to provide you the prompt quotation of material cost, shipping cost, and FOB charge. Over 3. N9 250 6. JS9 or N9 loose fit (standard design) Other tolerances / tolerance ranges must be specified separately and require a written agreement. 8: 7. Value - Norminal value. J. r2. Read more:N9: O: Nylon teeth with steel hubs that can have keyways and set screws added. Clutch Release Shaft Fork - This Clutch Release Shaft Fork is used on Ford Tractors 1939 - 1954. 2 3. 029 1. EL<200 CL±0. The app then provides the complete ISO fits definition with all relevant values. 2-3. List of 3 best N9 meaning forms based on popularity. Resumen de Variación del coeficiente de rugosidad ks en tuberías instaladas por el método de pipejacking. 7327 = 7. NOTE These symbols are selected from those given in BS 4999-103 and, together with the shaft dimensions, are those affecting. Under a transition fitting, the mating parts could perform a fitting without excess play or movement in the assembly. NOTE *Complete ISO System of Limits and Fits is now stored a CD KOK ISOTOL TM Computer Tolerancing Software. Circularity and Straightness M - 0. 1 ScopeThis British Standard relates to the following types of keys and keyways with dimensions in millimetres: 1) square parallel,2) rectangular parallel,3) square taper, gib-head and plain,4) rectangular taper, gib-head and plain. If the length to be evaluated is longer or shorter than 100mm, proportionally add or subtract from the standard values in the table. HTML preprocessors can make writing HTML more powerful or convenient. 10. Basic Size. 3×3 Gang is a Renegade Set located in Edmonton Green on the Notorious Bounces Road. N9 Tolerance ISO 2768-m Gen. Self-aligning ball bearings, with a tapered bore, have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. 8-0. I am an Engineer/part time student (Mechatronics) from South Africa. Drawer Date. 3: 0-9. will have an actual O. / Ritningsnr. Micrometer and verniers calliper can be used to check tolerance fine within 0. 5 +10 +14 +60 +12 +16 +20 +28 +39 +60 Page 1420 | Modi˜cation standads DIN 6885 Keyway, key details Extract Page 1 heavy type d b P9 / JS9 Hub keyway b P9 / N9 Shaft keyway h t 1 = d + t 2 t 2 t 3 = d – t 4 t 4 6 2 2 2 7 1 +0,1 4,8 1,2 +0,1 Size limits for Shaft Tolerance Classes h1 - h18. Maize is an. Preferred tolerance grade ISO 286; International Tolerance Grades Over To Tolerance 2 6 ±0. Therefore, understanding both concepts will play a huge role in a successful assemblage. Dung sai lắp ghép. 65. You could buy guide Tolerance Chart N9 Pdf or acquire it as soon as. Tolerance Shaft G Hub nomi- t2 nal I Normal fit Close fit m I I I Hub Js9 Shaft and hub P9 1 ,o Shaft N9 I,5 w zo - 0,004 - 0,029 23 3,O 3,O nomi- tole- nomi- tole- nal rance nal rance 1 ,o 0,6 w 03 1 , 8 + + ‘ ,I 0 1 ,o 23 1 ,o 2. Width. The following is the conversion chart is from dandong foundry, for Ra (um), Ra (micro inch), Rz (um), RMS and finish degree in China and USA, including the. This controls the width of the keyway. International Tolerance Grade (IT)6. 2-1. ISO Tolerances for Shafts (ISO 286-2) ISO Tolerances for Shafts (ISO 286-2) Nominal Shaft Sizes (mm) over. SCM435 4137 34CrMo4 34CrMo4 Pitch Tolerance 13 12 10 9 8 7 SCM440 4140 42CrMo4V 42CrMo4V Profile Tolerance 14 12 11 10 9 8 SNCM220 8615 20NiCrMo2 21NiCrMo2 Runout Tolerance 13 12 11 10 9 8 SNCM420 4320 Lead Tolerance 11 10 10 9 8 7 SNCM439 4340 Notes: JIS AISI / UNS ISO DIN Above-mentioned equivalent grades. ) TA, TB=1mm Increment Ordering Code TA10-TB10 E 4≤TA, TB<L/2 E For dimensions of the retaining ring groove DP. Then, the keyway was milled on the shaft model by using End mill sized (Universal lathe machine) mm and measure the keyway the shaft model to compare with the coordinates to reserve for the keyway in type of tolerance standard bar DIN 6885-MASHSTROY C11MT 1(1968- type A and fit work according to the system DIN ISO 286-2(1990-1)N9. 3 R0. 5, 1 Page 134 Precision: N10 Material: Polyacetal (SUS303) Series NSU Plastic Spur Gears with Steel Core m1 ～3 Page 136 Material: MC602ST (S45C). 7. Geometric Tolerance Types and Symbols Standard symbols are used to represent elements of geometric tolerances, datum, features, and modifiers. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keysTolerance classes for roller bearings are covered by the RBEC classifications contained within the same standard. 2 SECTION 22 TYPE G TYPE H SECTION VV TYPE J Note - Types A, C and E are meant for machine tools application also. Slope Key, Gib Head Key and Key Groove Key Nominal Dimension b×h Dimension of Key Groove Reference Reference Dimension of b1, b2 This video shows how to use the charts in ANSI B4. N8 = 3. Using a comprehensive data set of thermal tolerance limits, latitudinal range boundaries and latitudinal range shifts of cold-blooded animals, this study explores. 7-1. Hole-Drilling , Tolerances , Fitting; General Tolerances(Excerpt from JIS B 0405 1991/JIS B 0419 1991） BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. 15 – 50. ”. PFEIFER INDUSTRIES, LLC. I am an Engineer/part time student (Mechatronics) from South Africa. Advice from lecturer: "Be warned - when you go into industry your boss will give you a thousand things to do and he wants them done yesterday!" So far. 4 Shaft. 2 Q h7 E V③Keyways are made according to JIS B1301 standards, Js9 tolerance. siehe auch. Calculez ici ajustements et tolérances pour arbres et alésages. It has a positive value and is represented by a number without a sign. Tobacco protoplasts that transiently expressed Zm-p60. 2 SECTION 22 TYPE G TYPE H SECTION VV TYPE J Note - Types A, C and E are meant for machine tools application also. see also. 1 12 4 4 4 13. acquire the Tolerance Chart N9 Pdf connect that we meet the expense of here and check out the link. JIS B 0401-1. Max. 2-3: 0-4. Ra – Average Roughness. No. 2 +0. 006 inch. The size ranges given are for typical size ranges utilized within industry. 9-2-0. 3×3 Gang. They also go by #BR9 , #AFG , and more names. 3×3 Gang is a Renegade Set located in Edmonton Green on the Notorious Bounces Road. Tolerance Chart N9 Pdf Recognizing the quirk ways to get this books Tolerance Chart N9 Pdf is additionally useful. Luck & Regards, 4 Specifying Metric Keyways Dimensioning and specifying Metric keys and keyways varies significantly from the English system. 30. Diameter d_2 = shaft diameter d_1 +. 5-1. The AWS Well-Architected Framework is organized into how many pillars? 5. ISO 2768 and derivative geometrical tolerance standards are intendedto simplify drawing specifications for mechanical tolerances. 6-1-1. 1-1. A4 1:5 5. 010/- 0. 2-1978 standards. 2 E shaped retaining ring 7 8 5 9 6 0. Tolerance Zones for holes are shown in Fig. Runout of SplineGeçme Toleransları - Delik Mil Toleransı Menü Modül Seçimlerinize Göre Değişecektir. such as our TC design with a 50mm O. For those engineers who wish to put a square peg. 02 mm, but for fine tolerance they are not effective. ISO Tolerances for Holes (ISO 286-2) ISO Tolerances for Holes (ISO 286-2) Nominal hole sizes (mm) over. 028A-36 304 A-36 304 Tolerance Tolerance ALB 110M 111M 112M 113M 8 F7 +0. 5 cm/s during the optimization. 4. 2 Plain Bore Style Pulleys In larger plain bore style pulleys, a keyway must be machined into the bore with the correct tolerances. The letter signifies the start of the tolerance zone. 9-2-0. , P hi SECTION XX P TYPE A B I--’ SECTION YY t- TYPE C D TYPE E lb) [*I ib) TYPE F fi!zzB SECTION XX @ SECTION SECTION 2. For example, if a 1KΩ resistor has a tolerance of 20%, this means it can deviate 20% from its 1KΩ of resistance. QSpline Shaft: Raceway Twist Tolerance (Max. Figure 1 Engineering Limits and Fits. Hence we need the clarification with regard to the tolerance level in N8 & N6 finish, so we could choose the most economical method to machine the part. Also see Table of Hole Tolerances per. TOLERANCE TABLES - ROUND BARS ISO F7 - TOLERANCES f7 Diameter mm Upper Lower over 3 & up to & incl 6 -0. Threads are American (National) Standard Form, Fine Pitch, Equivalent to a Class 3 Fit. With engineering fits, the tolerance will always be shown in an alpha-numeric code. %. chart for fast tube set - up data . 5: 0-7. 備考：表中の各段で、上側の数値は上の寸法許容差、下側の数値は下の寸法許容差を示す。. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 Shaft tolerance data. FREQUENTLY ASKED QUESTIONS ON METRIC BORES AND KEYWAYS IN The EI for all of the H?s is the same and is only listed once at the end of the H tolerance chart. Whereas the P9 tolerance is a press fit tolerance. 00” hole with have an h6 tolerance band of (+0. 847. Hrapavost površine je u općem smislu mikrogeometrijska nepravilnost površine, koja nastaje tijekom postupaka obrade ili drugih utjecaja. 45 0. Note: Tolerance zones with thin print are specified only for basic sizes up to 500 mm. For more industry standard tolerance data see: Mechanical Tolerance Standards Chartsiv blank. 021 mm. 2KΩ. , 1989. 1 0 12 4 0-0. H6. The Drum-Couplings hub must be heated to the required shrinking temperature T before. Get a quote +61 7 3271 5424. In the Metric system it is common practice to specify the key size. Loose running fit for wide commercial tolerances or allowances on. 6. Miền dung sai kích thước b của rãnh trục có thể chọn là N9 hoặc H9. 01/100 Not applicable to h9 (Cold-Drawn). 022 over 6 to 10 -0. . PREFERRED FITS AND TOLERANCES CHARTS (ISO & ANSI METRIC STANDARDS) Preferred fits and tolerance table for hole and shaft basis systems which are given in ISO 286-1 (2010) and ANSI B4. g. 6. Date. 0. Example: Nominal Size 3mm-6mm; 28μm = 28x (10-3)=0. Rather than enjoying a good book with a cup of tea in the afternoon, instead they juggled with some infectious virus. Keyway Connection. 5 0. 3: 0-11. The calculator has been tested, but no guarantee can be given for the accuracy of the results. com Web site: For axample: If Tolerance on one side of recess, = 0’4 mm ( Say a) Tolerance of another side of recess, ( Say b) = 0’4 mm 3 DIMENSIONS then, Total Tolerance ( a + b ) 4 0’6 mm Dimensions of grinding wheels shall be in accordance with IS 2324 ( Part 2 ) : 1985 and IS 8915 : 1978. This is why you remain in the best website to see the amazing books to have. 005" for CNC machined parts. T. They can be used to measure tolerances in the range of 0. interchangeability. Draft angle a (for shapes G, H, J) Designation. Tolerance for key length Tolerance for keyway length 6-28-0. 2. 5: 0-7. 4Max. Find your data faster with our Fits and Tolerance Calculator. 000063 = R a 63 μinch = Microinch . MODEL 107 . Services & Support. 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 E-mail: info@pfeiferindustries. 8-1. Thus there is a need of instrument which can measure fine tolerance limit. 3 90-400-0. 0. BS 4235-1:1972. 1. 6 Surface Texture Specification Surface texture is generally specified with symbols as shown in Fig. Tolerance. Thus to create the interference needed so the. The value of fundamental tolerance unit is given by – Limits of tolerance for hole H7 The standard tolerance is –16 i = 16x0. Keyways Index. QSpline Shaft: Raceway Twist Tolerance (Max. Tolerance Chart N9 Pdf As recognized, adventure as without difficulty as experience about lesson, amusement, as competently as contract can be gotten by just checking out a ebook Tolerance Chart N9 Pdf also it is not directly done, you could agree to even more almost this life, roughly the world. D. For example, the working conditions may have tolerances for temperature (° C), humidity (g/m 3 ), etc. Looking at the IT7 tolerance grade, the chart gives an allowed variance of 0. This range is based on the size of the shank. 4 Specifying Metric Keyways Dimensioning and specifying Metric keys and keyways varies significantly from the English system. , 1987 ; Grossmann et al. 1 -697 1 -698 Lead Screw Both Ends Double Stepped Lead Screw Straight Type M Material SSurface Right-Hand Treatment Screw Left-Hand Screw Right and Left-Hand ScrewS1=Tolerance of b× 2 Slope Key (Code T) 1 S2=Tolerance of h× 2 Section of Key Gib Head Key Section of Key(A-A) h2=h, f=h, e≈b Section of Key Groove h2=h,2 f≈h, e=b 1 S =Tolerance of h× 2 1 S1=Tolerance of b× 2 [Technical Data] Machine Keys and Key Grooves Excerpts from JIS B 1301(1996) 2. It calculates upper limit, lower limit, maximum diameter, minimum diameter and range by simply entering a basic size and selecting the desired tolerance (DIN EN ISO 286 norm). 4 5,3 1 I 4 + &I I 0 5,O. Sur la base des tolérances fondamentales et des limites selon ISO 286. Tolerance ISO 2768-m 06-12-06. Forms you cannot save: You will see this message at the top of these forms. 21 1. 000 mm. Areas of products which have been re-worked will not be black oxide coated. PO1/N9*KD – Control keys/OC quantity and price tolerances added PO1/N9*KD – Control keys/ASN quantity and time tolerances added 2. 1。 5)surface finish 3. So the resistance can fall between 800Ω and 1. ISO tolerance to DIN 748, DIN 7160, DIN 42948 . . 2 3. 2 30 120 ±0. 9-1. Revision Törnedalsgatan 1, 275 21 Sjöbo SWEDEN SC45TW New Ø9-12 mm SC45TW-S-XX P01 SC45TW Ø9-16Keyways will be furnished per ISO/R773 and Js9 width tolerance unless otherwise specified. 6 μm = Micrometre Last Updated: 20 February 2015. If the length to be evaluated is longer or shorter than 100mm, proportionally add or subtract from the standard values in the table. Parallel and taper keys; Part 2 Specification for metric keys and keyways. BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. tolerance zones for general use can be found in the following table The tolerance zones not included in this table N9. . BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. 5 +0. L1 MO1 DTolerance Chart N9 Pdf Recognizing the quirk ways to get this books Tolerance Chart N9 Pdf is additionally useful. 5. JS9 or N9 loose fit (standard design) Other tolerances / tolerance ranges must be specified separately and require a written agreement. Cytokinins and their sugar or non-sugar conjugates are very active growth. They have inch threads and four, equally spaced. m) Smooth machined surface…. 3. t2 t1. Tolerances can be applied to holes and shafts as well as other shapes. Contact Us. The means to do so are ‘slip gauges’. Provided by TNN Engineering. 013 -0. 05 L≥500 L±0. Toleranslar performastan ödün vermeden izin verilecek. Keys and keyways secure the hub and shaft to prevent relative movement between a power transmitting shaft and an attached component. 030: 0. 000 mm. The N9 cells were treated with 500 ng/ml lipopolysaccharide (LPS) for 24 hours to achieve functional activation . 1-1. m) Static mating surfaces (or datums)…. 075 0 0. ) Unit: µm Material Tolerance SUJ2 13 SUS440C 33 Spline groove twist is measured at an arbitrary 100mm section of the effective shaft length. KKPU: 1 ~ 2: MC901 (SUS303) — Cut: N9: O: Nylon teeth with stainless steel hubs for rust-resistance. 1. tolerance: [noun] capacity to endure pain or hardship : endurance, fortitude, stamina. 09 1. Mezní úchylky zde definované je vhodné používat i u nekovových materiálů. 3-0. ) and tolerance grades (7, 8, 9, etc. Events & Expertise. 4: 8. e Tolerance m+0. Thus to create the interference needed so the. Introduction to product submission . ) Unit: µm Material Tolerance SUJ2 13 SUS440C 33 Spline groove twist is measured at an arbitrary 100mm section of the effective shaft length. D. 2 3. These compounds have been identified in numerous plant species. 1 DIMENSIONS AND TYPES OF KEYS ( see Table 1 ) 2Guvermectin is a recently discovered microbial N9-glucoside cytokinin compound extracted from Streptomyces sanjiangensis NEAU6. This video shows how to use the charts in ANSI B4. Based on standard tolerances and limit deviations in accordance with ISO 286. Tolerance: The algebraic difference between the max and min limits on the part. ISO Bore Tolerance Chart For bore tolerance system, Nominal sizes from 1 - 160mm DIN 7160 (8. N9 250 6. Basic Size. 63 1. ⑤ . , differ from one's own; freedom from bigotry. The usage of these tolerances is advised for economic reasons. relates to cutting of the two mating gears’ teeth. S1=Tolerance of b× 2 Slope Key (Code T) 1 S2=Tolerance of h× 2 Section of Key Gib Head Key Section of Key(A-A) h2=h, f=h, e≈b Section of Key Groove h2=h,2 f≈h, e=b 1 S =Tolerance of h× 2 1 S1=Tolerance of b× 2 [Technical Data] Machine Keys and Key Grooves Excerpts from JIS B 1301(1996) 2. N10 = 12. Slope Key, Gib Head Key and Key Groove Key Nominal Dimension b×h Dimension of Key Groove Reference Reference Dimension. The tolerance percentage is a specification which shows how much an electronic component can deviate, in percentage, from its stated nominal value. N9 N10 N11 N12 N6 0. If the length to be evaluated is longer or shorter than 100mm, proportionally add or subtract from the standard values in the table. An alternative way for us to think of tolerance is to place it within the moral domain and recognise that it is what it is, a moral virtue. If the length to be evaluated is longer or shorter than 100mm, proportionally add or subtract from the standard values in the table. O. 65) Nominal dimension Tolerance Zones over to U7 S7 R7 P7 P9 N7 N9 M7 K7 J7 JS9 H7 H8 H11 G7 F7 F8 E8 E9 D10 deviations in µm 1 3 -18 -14 -10 -6 -6 -4 -4 -2 0 +4 +12. 09 - 8. Fits and tolerances calculator. 4-0. Slope Key, Gib Head Key and Key Groove Key Nominal Dimension b×h Dimension of Key Groove Reference Reference Dimension. 5 +10 +14 +60 +12 +16 +20 +28 +39 +60Dung sai được ký hiệu là T (Tolerance) và có các công thức tính dung sai ( công thức tính sai lệch giới hạn ) như sau: Dung sai kích thước trục : T d = d max – d min hoặc T d = es – ei. 8318. N7 = 1. 3 +0. . S1=Tolerance of b× 2 Slope Key (Code T) 1 S2=Tolerance of h× 2 Section of Key Gib Head Key Section of Key (A-A) h2=h, f=h, e≈b Section of Key Groove h2=h, f≈h, e=b 1 S2=Tolerance of h× 2 1 S1=Tolerance of b× 2 2. 010 in. Calculate fits and tolerances for shafts and holes here. ISO system of limits and fits Part 1: Bases of tolerances, deviations and fits per. What is an acceptable tolerance for a non-engineering dimension. 5 Hope that helps . Rotary Shafts D Tolerance h9 (Cold-drawn) / h7 (Ground) / g6 (Ground) Retaining Ring Grooves on Both Ends with Keyway QNumber of keyways can be specified up to 3. ISO 2768 is mainly for parts that are manufactured by way of machining or removal of materials. Test results ca. About HTML Preprocessors. Parallel Keys and Key Grooves Note( 1 ) The applicable shaft diameter is calculated from the torque corresponding to the strength of the key, for presentation as referential data for general-purpose use. 2 – Instrument Ball Bearings. 6. Modi˜cation standads | Page 1421 DIN 6885* Keyway, key details Extract Page 2 heavy type for machine tools d b P9 / JS9 Hub keyway b P9 / N9 Shaft keyway h t 1 = d + t 2 t 2 t 3 = d – t PFEIFER INDUSTRIES, LLC. n9 heathrow terminal 5. co. Kamens, J. g. 6 0-0. Here we can calculate rigid connections, namely the pinned, keyed, splined and flanged ones. Free Running; This type of tolerance can be usable where any special requirements for accuracy in not essential, but good for wide temperature variation, heavy journal pressures and high running speeds. Preventive maintenance In order to keep your Scanjet high velocity valve servicing you as an. 6: 0-3. , ISO 2768) Hot Network Questions Is "I am excited to eat grapes" grammatically correct to imply that you like eating grapes?Keyway uses a smaller shaft & has a nut. Maize is an important food crop in the world and exploring. 4 Shaft tolerance zones. 012 0. 2. ANSI tolerance calculator is applicable to non-threaded cylindrical parts. 0 +0. The standard ISO 286 defines the system of tolerances, deviations and fits only for basic sizes up to 3150 mm. 9 30 28. This is an undersized clearance. 587 588 Lead Screws −One End Stepped, One End Triple Stepped− Lead Screws −One End Double Stepped, One End Triple Stepped− 3. 30 - 7. samsung note 5 sm-n920c. 3. m) Bearing Surfaces…. Page 12, Table 6 In Table 6, replace 25 by 26 as the value for the upper limit deviation, ES , for tolerance class H1 for the nominal size above 2 500 mm up to and including 3 150 mm. 0,025 NI 0,4 N5 6,3 N9 0,05 N2 0,8 N6 12,5 0,1 N3 1,6 N7 N 10 0,2 N4 3,2 25 NIl N8 50 N 12 Označbe površinske hrapavosti v risbah (JUS M. D. 1. 2 Q h7 E Vthe general tolerance values of *0,3 mm would be quite adequate. Fits and tolerances calculator. 1 or the machinery handbook for selecting a size tolerance for a functional fit. It is the size whose limit dimensions are specified using the upper and lower deviations. Deviation in microns. N9 microglial cells were stimulated with 1 μg/mL LPS for 6, 12, and 24 h. As you know that ISO 286 is an equivalent standard of JIS B 0401, DIN ISO 286, BS EN 20286, CSN EN 20286 so the table will work with those standards as well. Woodruff keys and keywaysSurface roughness is a calculation of the relative smoothness of a surface’s profile. This difference in dimensions is what is typically referred to as the “press fit tolerance. 16 0. 30. close running fit:. 6 - M 18. 3. 30.