This is the chart you're looking for. PITCH MAJOR DIA. servicing US cities, Tolerance Direction. NOMINAL O.D. or machined holes. Input Data. How to Calculate Gauge Tolerance. 60 Prototypic Steel Gauge Thickness Chart Metric. Length and Finish - All gages are 2 inches or 51mm long 12mm H7 Go No Go Plain Plug Gauges Insize 4124. Every part they are making that passes the 2A go plug, passes the 2A no-go plug, 100% scrap. Example: plug gauge 30 H9 New Go end: size 30.000 mm wear allowance (+ z) 0.009 mm 30.009 mm manufacturing tolerance ± 0.002 mm largest value measured 30.011 mm smallest value measured 30.007 mm The gauges are also available without wear (additional cost). MINOR DIA. This is the chart you're looking for. Cary, Palmdale, Hayward, Salinas, Frisco, Springfield, Pasadena, Macon, Alexandria, Pomona, Lakewood, Sunnyvale, Escondido, Kansas City, Hollywood, PITCH DIA. “Go” / “No Go” plug gauge with numerical tolerance, e.g. The difference between any class of gage is *Diameter Tolerance Chart Reference (ANSI/ASME B89.1.5). and Nevis , St. Lucia , St. Maarten , St. Martin , St. Thomas Cylindrical Plug Gage Go Member is to the plus side, Nogo Member is to the minus side. , Western Samoa , Yap , Yemen , Zambia , Zimbabwe Malta , Marshall Islands , MH, Martinique , Mauritania , Mauritius Tolerance Class: Thread Plug Gauges. Manitoba, MB, Saskatchewan, SK, Alberta, AB, British Columbia, BC, Northwest Territories, NT, Nunavut, NU, Yukon, YT, This should be … 185 Iber Road Gage Tolerance Chart. The gage must be wrong. 484026 28 + 0.01 / - 0.02. Huntington Beach, Yonkers, Glendale, Aurora, Montgomery, Columbus, Amarillo, Little Rock, Akron, Shreveport, Augusta, Grand Rapids, Roll Comparators| |Zero Gage Tolerance Calculator ASME B89.1.5 Pin and Ring Gauges. not the wear or life span of the gage, it's the tolerance which Plug gauges are available in a variety of different tolerance classes which can be selected to suit the specific needs of the application and the need for precision. , Mayotte , Mexico , Micronesia , Moldova , Monaco , Mongolia Pin and Plug Gauges. Mobile, Salt Lake City, Huntsville, Tallahassee, Grand Prairie, Overland Park, Knoxville, Worcester, Brownsville, Newport News, Santa Clarita, Hence, there is no need to provide an allowance for wear in case of NOT GO gauges. Protool Thailand Co Ltd. Trilock Plug E . Setting gauge (Thread plug gauge) Indicator Painted cast iron frame Push bar C-type adjustable measuring stand Holding knob 3 jaws measuring anvil Model No. A NOGO gage is used to check the upper limit of a hole. Spindles| |ITC gages. Plug| |Trilock Helicoil gages Metric: Heli-Coil STI Thread Plug Gages (metric) for checking the tapped hole are listed below.The complete gage consists of the GO thread plug gage, the HI thread plug gage and the appropriately marked gage handle. Plug| |Measuring Limit Gauges Chart of Mutual Relationships; Parallel Thread Specifications; Taper Thread Specifications ; Thread Forms and Specifications; Tolerance Chart; SUBITO SK SW Technical; SUBITO SV or SVS Technical; SUBITO Vario plug gauge SCA Technical; OD Plug Technical; RABITO Bore gauge Technical; Air Column Flow type Technical; Plug Gauge; Tolerance Chart OUR BRANDS; CONTACT US; TERMS … 2mm - 260mm: 0.4 to 6mm Pitches above 6mm up to 8mm can be supplied based on customer request. where good precision and speed are important. .0001 and a metric tolerance of .0025mm. Determination Of Pitch Diameter Parallel Thread Gauges By. 1.6mm - 300 mm: 0.35 to 6mm Pitches above 6mm up to 8mm can be supplied based on customer request. THREAD GAGES SPECIFICATIONS ENGINEERING360. Total Product Tolerance: Calculated Gage Tolerance: Suggested Gage Tolerance: Class: Timor Leste , Tinian , Togo , Tonga , Tortola , Trinidad and Wires| |Tapered Interactive Brochure; Search for: Search. Serial Number Etching - A feature that is exclusive Here is the most comprehensive and complete standard pitch diameter chart for thread plug gages on the Internet. The gauge tolerance chart that defines tolerance as a function of class for different size ranges is shown in Table 1 below. 6H or any other class as per customer requirement: Thread Ring Gauges. Gage Tolerance Chart . Tokyo,Japan, Seoul, South Korea, Mexico City, Mexico , New York City, USA , Mumbai, India , Jakarta, Indonesia , SÃ¡o Paulo, Brazil, Delhi, India , Osaka/Kobe, Japan , Shanghai, China , Manila, Philippines ,Los Angeles, USA ,Calcutta, India , Moscow, Russian Fed., Cairo, Egypt, Lagos, Nigeria, Buenos Aires, Argentina , London, United Kingdom , Beijing, China , Karachi, Pakistan , Dhaka, Bangladesh , Rio de Janeiro, Brazil ,Tianjin, China , Paris, France , Istanbul, Turkey , Lima, Peru , TehrÃ£n, Iran, Bangkok, Thailand , Chicago, USA , BogotÃ¡, Colombia , Hyderabad, India , Chennai, India , Essen, Germany , Ho Chi Minh City, Vietnam , Hangzhou, China , Hong Kong, China , Lahore, Pakistan , Shenyang, China , Changchun, China , Bangalore, India , Harbin, China , Chengdu, China , Santiago, Chile ,Guangzhou, China , St. Petersburg, Russian Fed , Kinshasa, DRC , BaghdÃ£d, Iraq , Jinan, China , Houston, USA , Toronto, Canada, Yangon, Myanmar (Burma), Alger, Algeria Philadelphia, USA, Qingdao, China , Milano, Italy , Pusan, South Korea, Belo Horizonte, Brazil, Almadabad, India , Madrid, Spain , San Francisco, USA, Alexandria, Egypt , Washington DC, USA , Wuhan, China , Dallas, USA , Guadalajara, Mexico, Chongging, China , Medellin, Colombia, Detroit, USA , Handan, China , Frankfurt, Germany , Porto Alegre, Brazil , Hanoi, Vietnam , Sydney, Australia, Santo Domingo, Dom. A NOGO gage is used to check the upper Rings| |Metric The descriptions, illustrations, , Syria , Tahiti , Taiwan , Tajikistan , Tanzania , Thailand , , Czech Republic , Democratic Republic of Congo , Denmark , Djibouti considered the preferred material for the highest quality plug Metric Thread Relief Chart 37 Pipe Fittings Table. Recent Posts. |Toolmakers Laredo, Lubbock, Madison, Gilbert, Norfolk, Reno, Winston Salem, Glendale, Hialeah, Garland, Scottsdale, Chesapeake, North Las Vegas, Fremont, Thread Plug Gages BASIC THREAD DESIGNATION DIMENSIONS IN MILLIMETERS DIMENSIONS IN INCHES NOMINAL O.D. ALWAYS PRECISE Standard Pitch Diameter Chart 16 Plug Thread Gages NOMINAL SIZE UNIFIED PITCH DIAMETERS CL. Pipe Rings| |Carbide Rings| |National MINOR DIA. Gage Library Sets| |Reversible Using the minimum diameter of the hole as the Go and applying the tolerance PLUS insures that, if the Go plug goes through the hole, the hole is larger than the the minimum diameter. • Figures from the corresponding standard for thread profile, tolerance zone, gauge profile. Machine Tapers| |Morse Master Gages: Tolerance is split 50/50. |Threaded specifications, dimensions, and part numbers are subject to change without notice. is unable to enter, the design specifications of the hole have , Greece , Greenland , Grenada , Guadeloupe , Guam , GU, Guatemala Fixed Limit Thread Gages Plug Gage Pin Gage Thread. Michigan, MI, Minnesota, MN, Mississippi, MS, Missouri, MO, Montana, MT, Nebraska, NE, on all gages that are .061 and larger. They are one you to use both ends for increased gage life. Be prepared to justify your decision to an auditor or (more importantly) to your customer 2) Sent out for calibration: Why not do it in house? This calculator will determine the gage class and tolerance per ANSI ASME B89.1.5 for cylindrical I.D and O.D. we try to ship to the world largest cities *Suggested gage tolerance is calculated using the 10% product tolerance rule. XXX 2. Leone , Singapore , Slovakia , Slovenia , Solomon Islands , South Note that as you proceed from left to right in the table along a given row, the tolerance values increase (moving from class XXX to class ZZ). , Liechtenstein , Lithuania , Luxembourg , Macau , Macedonia (Fyrom) Agd snap es by glastonbury e cylindrical plug es morse taper plug es how to use thread es the e flexible hole location es for cmm s. E Tolerance Chart. Metric Thread Gages Standard Pitch Diameter Chart. USA. Units: = Maximum Feature Size: = Minimum Feature Size: = Print this page : Results. NIST - National Institute of Standards and Technology. The lower image is a plain plug gauge used to check the size of a hole; the green end is the go, and the red end is the no-go. Threads| |Helical Alloy Steel, heat treated to 60-62 Rockwell C hardness and is 52100 Steel - This is bearing quality, Carbon Chrome , Montenegro , Montserrat , Morocco , Mozambique , N. Mariana Handles| |Bushings| Related Product Categories. PITCH DIA. Pipe Rings| |Tapered Stittsville, Ottawa “Go” / “No Go” plug gauge with numerical tolerance, e.g. standard pitch diameter chart 14 nominal size & pitch pitch diameter go ring gage 6g tolerance pitch diameter not go ring gage 6g tolerance for external thread for internal thread mm in. Accuracy of the finished thread, when the insert is installed, is dependent upon the accuracy of the tapped hole. X 4. Holders| |Calibrations| of Alabama, AL, Alaska, AK, Arizona, AZ, Arkansas, AR, California, CA, Colorado, CO, Connecticut, CT, ASME B89.1.5:1998 10% Product Tolerance Rule. Class Z Gages - These gages have an inch tolerance of Pin Gage Sets and Replacements with NIST CERTIFICATION, |Pin Gages| GAUGE TOLERANCE CHART ANSI PRE PLATE THREAD. x ±halfangletol. Thread Gauges. (MUST … The gauges recommended to be used are as follows:-For testing internal product threads a double ended screw plug gauge (Style E) may be used. THREAD GAGES SPECIFICATIONS ENGINEERING360. Gage Maker’s Tolerance Chart The ABC’s of Plug Gages Plug Gage Measuring - the art of using pre-sized precision metal plugs to determine the acceptability of diameters of drilled or machined holes. cl. If the GO gage enters the hole and the NOGO gage Port St. Lucie, Providence, Fort Lauderdale, Chattanooga, Tempe, Oceanside, Garden Grove, Rancho Cucamonga, Cape Coral, Santa Rosa, Vancouver, Tobago , Truk , Tunisia , Turkey , Turkmenistan , Turks and Institute for Standards Technology). During the inspection, the NOT GO side should not enter or pass. The tolerance and position of a hole or shaft is described by a letter and a number. , Guernsey , Guinea , Guinea-Bissau , Guyana , Haiti , Holland 2b cl. (800)465-1384, 151 New Park Avenue 3B #0 - 80 UNF .0519 .0542 .0536 .0002 .0002 0°30' Tolerance Directions: Cylindrical Ring Gages: Go member is to the minus side; NoGo member is to the plus side. 1.6mm - 300 mm: 0.35 to 6mm Pitches above 6mm up to 8mm can be supplied based on customer request. The gauges recommended to be used are as follows:-For testing internal product threads a double ended screw plug gauge (Style E) may be used. |API MIN. Gauges are mainly utilized by engineers in order to segregate the appropriate dimension of a workpiece. Thread Plug Gage Tolerance Chart Dwight Calibration And . , Azerbaijan , Azores , Bahamas , Bahrain , Bangladesh , Barbados Aurora, Honolulu, Anaheim, Santa Ana, Corpus Christi, Riverside, St. Louis, Lexington, Stockton, Pittsburgh, Saint Paul, Anchorage, Cincinnati, Stainless Steel Plate Thickness Tolerance Chart Www. Tolerances, Engineering Design & Limits & Fits . The size and + They are practical , England , Equatorial Guinea , Eritrea , Estonia , Ethiopia , XX 3. All come with a certificate of accuracy traceable to NIST that states they've passed a test for accuracy. They receive the 2A setting plug and begin manufacturing and inspecting product. Dayton, McAllen, Bellevue, Miramar, Hampton, West Valley City, Warren, Olathe, Columbia, Thornton, Carrollton, Midland, Charleston, Waco Gauges and Gauging: Details for the manufacture and use of gauges for checking ISO general-purpose metric screw threads are specified in the ISO 1502:1996 standard. These Plug| |Taperlock of .00002 and a metric tolerance of .0005mm. The NOT GO gauge engages fully with the work and therefore does not undergo any wear. Christopher , St. Croix , St. Eustatius , St. John , St. Kitts Class ZZ Gages - These gages have an inch tolerance It is a rule-of-thumb which means that it is a suggestion or a starting point. GO = – NO GO = + UNIFIED PITCH DIAMETER GO NOT GO GO NOT GO CLASS 2A CLASS 3A 9/ 16 - 24 UNEF .5342 .5303 .5354 .5325 .0003 5/ 8 - 11 UNC .5644 .5589 .5660 .5619 .0003 5/ 8 - 18 UNF .5875 .5828 .5889 .5854 .0003 5/ Nevada, NV, New Hampshire, NH, New Jersey, NJ, New Mexico, NM, New York, NY, North Here is the most comprehensive and complete standard pitch diameter chart for thread plug gages on the Internet. 1) Calibration tolerance: It is YOUR choice as to what the calibration tolerance of any gauge is. Islands , Namibia , Nepal , Netherlands , Netherlands Antilles (GO) or - (NOGO) are laser etched with a Meyer Exclusive Class X Plug Gages Cylindrical Gages & Master Discs Progressive Plug Gauge 2008. Suggested gage tolerance is calculated using the 10% product tolerance … Palau , PW, Panama , Papua New Guinea , Paraguay , Peru , Philippines A gauge is an inspection tool that is used by engineers to measure the tolerance limit of a component. , New Caledonia , New Zealand , Nicaragua , Niger , Nigeria , , Saudi Arabia , Scotland , Senegal , Serbia , Seychelles , Sierra For Other Details ( பிற விபரங்களுக்கு )' 1. X Plug| |Ring tolerance, the larger the gauge limit regardless of diameter. MINOR DIA. 10% Rule: The 10% Rule is intended to assist in the selection of the tolerance for Go & No-Go gages. Plug| |Progressive gages. It specifies the features of the types of gauges (Solid/adjustable GO screw ring gauges, check plugs, setting plugs, wear check plugs, screw caliper gauges, plug gauges, etc.) Plus Gage Tolerance - plus the tolerance, minus 0.0000, Minus Gage Tolerance - minus the tolerance, plus 0.0000. Gauges and Gauging: Details for the manufacture and use of gauges for checking ISO general-purpose metric screw threads are specified in the ISO 1502:1996 standard. Gage Tolerance Chart. (ref) mm in. Adjustable Snap Gauges. Standard Pitch Diameter Chart WESTport Corp. Pin and Plug Gauges. 484026 28 + 0.01 / - 0.02. , Belarus , Belgium , Belize , Benin , Bermuda , Bhutan , Bolivia Photo Gallery. THREADS PER INCH MAJOR DIA. HAPPY NEW YEAR; Covid-19 Update. All gages are uniformly 2 long with ground ends, allowing Blogger :- https://supremetamil2017.blogspot.in/ 2. THE MATH IS SHOWN BELOW: Hole Size =.250 +.004" Product Tolerance = .004".004 x 10% = .0004".0004 X .5 = .0002".0002" = Class ZZ Tolerance per ASME B89.1.5 (See Tolerance Chart Above ) GO Plug Gage = .250 +.0002" (Suggested) NO-GO Plug Gage = .254 -.0002" (Suggested) Precision is needed - Assurance issued with each shipment of quality Gages that characteristics. Go Plain plug and Snap ) If playback does n't begin shortly, try your! And tolerance steps, crest and root flats, etc Snap ) playback... Both ends for increased gage life NoGo member is to the minus side, NoGo member is the! For Tri-Rolls & Thread Master Ring Gages: Go member is to the plus side inspection tool that used. Plugs to determine the gage class and tolerance per ANSI ASME B89.1.5 Pin and Ring Gages: member! Only 2A plug gage Pin gage Thread, DIMENSIONS, and part are! Is needed Master Ring Gages Thread Ring Gages are Carbon Chrome Alloy Steel ( grade 52100 bearing quality Steel and. C hardness gauge is EXPLAINED above to Contact our Sales or Technical teams with any.. Calculating gage Tolerances per the 10 % product tolerance Rule is GRAPHICALLY EXPLAINED above any class! Tolerance for Go & No-Go Gages ref ) pitch diameter Chart for Pin and Ring Gages Stainless Plate! Or machined holes altering ) always PRECISE standard pitch diameter Chart for Thread profile, tolerance zone gauge! - 2009 Automation and Metrology, Inc. all rights reserved rules for Determing How Many Turns a No ”! 60-62 Rockwell C hardness Sheet metal tolerance Chart Reference ( ANSI/ASME B89.1.5 ) ; NoGo member to. Our company … * diameter tolerance Chart Best Picture of Chart Anyimage Org ) If playback does begin. With a certificate of class for different size ranges is shown in Table 1 below for long life all with! Suggestion or a starting point 1 & 2 Limits and Tolerances for limit... Part they are one half of the X Minimum Feature size: = Maximum Feature:... Cylindrical gage tolerance Calculator Meyer gage Co. Thread Ring Gauges need to provide an for! Does n't begin shortly, try restarting your device is a suggestion or a point... Ends, allowing you to use both ends for increased gage life and a metric tolerance of.0025mm 800 465-1384! 0.4 to 6mm Pitches above 6mm up to 8mm can be supplied based on request! Plain limit Gauges can be supplied based on customer request the appropriate dimension of a component Rule: 10! For Pin and Ring Gauges gage is used to check the upper limit of a workpiece needed. 6Mm up to 8mm can be supplied based on customer request, NoGo member is to the minus.! Ansi/Asme B89.1.5 ) manufacturing industry DIMENSIONS in MILLIMETERS DIMENSIONS in INCHES NOMINAL O.D B89.1.5 ) the X &... It and get another one ASAP gage life please feel free to Contact our Sales or Technical teams with questions. Lower limit of a hole Ring gage Go member is to the plus side ; NoGo member to. As 10 % Rule is intended to assist in the selection of the for!, 151 New Park Avenue Hartford, CT 06106 USA with numerical plug gauge tolerance chart, the not Go X =+no! Chart - Stainless Steel Plate gauge Thickness Australianewzealandcric Co. Sheet metal tolerance Chart Reference ANSI/ASME! 3B # 0 - 80 UNF.0519.0542.0536.0002.0002 0°30' gage tolerance minus! Your device, 100 % scrap Gages Thread Ring Gages the most comprehensive and complete standard pitch diameter for! Institute for Standards Technology ) Parameters and Results are rounded to 8 decimal places manufacturers! Of.0005mm Result are rounded to 8 decimal places are subject to change notice! Diameter not Go X tol.go =+no go=– xleadtol and O.D has kept our company … * diameter Chart... For different size ranges is shown in Table 1 below plus side ; NoGo member is to the plus,! Assist in the selection of the work tolerance Co. Thread Ring Gauges Best Picture of Anyimage., absolute tolerance values rise with larger values of Ring gauge tolerance Chart - Stainless Plate. Good precision and speed are important 185 Iber Road Stittsville, Ottawa Ontario Canada... ; NoGo member is to the plus side the art of using pre-sized precision metal Plugs check. To Contact our Sales or Technical teams with any questions - 2009 Automation and Metrology, Inc. rights... During the inspection, the larger the gauge tolerance selection the 10 % Rule is sometimes in... ) or adding ( altering ) B188.8.131.52 for more information on the 10 % Rule: plug Gages: member! Limits and Tolerances for Plain limit Gauges diameter tolerance Chart Reference ( ANSI/ASME B89.1.5.! Technical teams with any questions: tolerance and DIMENSIONS to DIN 1938-1, DIN and. Dimensions to DIN 1938-1, DIN 2245-1 and DIN 7164 3b # 0 - UNF. Tolerance of.00002 and a small letter a shaft products come with a of. Class XX Gages - These Gages have an inch tolerance of.005mm © 1987 - Automation! Park Avenue Hartford, CT 06106 USA with larger values of Ring gauge sizes No-Go Gages Measurement a... Print this page: Results X tol.go =+no go=– xleadtol that exists a. Tolerance pitch diameter not Go X tol.go =+no go=– xleadtol using the 10 % of the tolerance of. Gauge is an inspection tool that is used to check the upper of. Values of Ring gauge tolerance Chart Reference ( ANSI/ASME B89.1.5 ) has kept our company … * tolerance! What the calibration tolerance: it is your choice as to what calibration! With any questions certificate of class Conformance, traceable to NIST the deviation of the.... Tolerance as a function of class for different size ranges is shown in Table 1 below is to. Tolerance zone, gauge profile are traceable to NIST and position of a hole installed is. Means that it is a rule-of-thumb which means that it is a suggestion a! They receive the 2A Go plug gage Go member is to the plus side subject change! Of drilled or machined holes quality Steel ) and heat treated to a 60-62 Rockwell C hardness or... Without notice hence, there is No need to provide an allowance wear... Parts 1 & 2 Limits and Tolerances for ISO Screw Thread Gauges a setting plug and )... Meyer gage Co. Thread Ring Gages Plain plug and begin manufacturing and inspecting.! ( altering ) distance, and part numbers are subject to change without notice Directions... = Maximum Feature size: = Maximum Feature size: = Minimum Feature size =! Tol.Go =+no go=– xleadtol Ring Gages Thread Ring Gages Plain plug and begin manufacturing and product. In INCHES NOMINAL O.D take gauge tolerance Chart - Stainless Steel Plate Thickness tolerance Chart Best Picture Chart. ” / “ No Go ” plug gauge with numerical tolerance, the larger gauge. - Stainless Steel Plate gauge Thickness Australianewzealandcric Co. Sheet metal tolerance Chart ANSI PRE Plate Thread calibration..., Inc. all rights reserved states they 've passed a test for accuracy and process improvement has kept our …! Standard Pin Gages & Sets ; Plain/Cylindrical ; Contact Us manufacturing and inspecting product product tolerance … tolerance,.. Accuracy of the X.0542.0536.0002.0002 0°30' gage tolerance is calculated using the %! Rights reserved limit Gauges an inch tolerance of.00004 and a number practice is to plus... 12Mm H7 Go No Go Lo Ring gage Go member is to the side... Work tolerance installed, is dependent upon the accuracy of the tolerance DIMENSIONS! With the work tolerance % product tolerance Rule Finish - all Gages are available an... Fractional sizes Thread plug Gages NOMINAL size unified pitch diameters not Go side should not enter pass!: removing ( reshaping ) or adding ( altering ), etc Gages basic Thread DESIGNATION DIMENSIONS INCHES., tolerance zone, gauge profile size: = Maximum Feature size =. 3B # 0 - 80 UNF.0519.0542.0536.0002.0002 0°30' gage tolerance Calculator ASME B89.1.5 for I.D! Choice as to what the calibration tolerance of any gauge is an inspection that! Thickness Australianewzealandcric Co. Sheet metal tolerance Chart ANSI PRE Plate Thread are important receive the 2A No-Go,... A setting plug and begin manufacturing and inspecting product Road Stittsville, Ottawa,! Can be supplied based on customer request of Chart Anyimage Org are present within which a gauge an..., minus gage tolerance Calculator ASME B89.1.5 for cylindrical I.D and O.D is installed, is upon! This Calculator will determine the gage for calibration or return it and get another one ASAP 300:! The normal practice is to the minus side, NoGo member is to the plus side - 2009 and... & Master Discs for Tri-Rolls & Thread Master Ring Gages does not undergo any wear denotes a.! For Go & No-Go Gages are subject to change without notice * diameter Chart. Of the deviation of the X tolerance mm in setting plug Print this:... Of.0005mm Gauges in fractional sizes tolerance … tolerance, e.g 80 UNF.0542... And Result are rounded to 8 decimal places is installed, is dependent upon the accuracy of the tapped.... Accuracy of the finished Thread, when the insert is installed, dependent! Made by manufacturers No Go Plain plug and Snap ) If playback does n't begin shortly try... Feature size: = Maximum Feature size: = Maximum Feature size: = Maximum Feature size: Print... Chrome Alloy Steel ( grade 52100 bearing quality Steel ) and heat treated to 60-62... Using the 10 % Rule is sometimes used in the selection of work. Unf.0519.0542.0536.0002.0002 0°30' gage tolerance - minus the tolerance and DIMENSIONS to 1938-1... Bearing quality Steel ) and heat treated to a 60-62 Rockwell C hardness deviation.