J.W. DONCHIN CO. 4841-43 W. Chicago Ave. • Chicago, IL 60651-3224 Ph: 773-261-2182 • Fax: 773-261-2867 • [email protected]• www.jwdonchin,com REFERENCE TABLES Contents Page Description Range 647 REFERENCE TABLES 648 Metric and English Equivalents 649 Inch to Millimeter Conversion Table 650 Millimeter to Inch Conversion Table 651 Decimal Equivalents of 8ths, 16ths, 32nds, 64ths 652 Decimal Equivalents of Number Size Drills American Standard Pipe Thread and Tap Drill Sizes 653 American National and Unified Coarse and Fine Thread Dimensions and Tap Drill Sizes 654 American National and Unified Coarse and Fine Thread Dimensions and Tap Drill Sizes (continued) Millimeter Tap Drill Sizes 655 Tap Drill Sizes For Fractional Size Threads Approximately 65% Depth Thread / AMERICAN NATIONAL THREAD FORM 656 Double Depth of Screw Threads ISO External Threads Medium Fit 657 American Standard Acme Screw Thread Dimensions Tapers and Angles 658 General Guide for Cutting Speeds and Feeds for Drills Guide for Drill Feeds Guide for Peripheral Speeds 659 Pitch Diameter Tables – American National Thread Form For Nos. 575 and 585 Screw Thread Micrometers 660 Pitch Diameter Tables For Nos. 575 and 585 Screw Thread Micrometers 661 Pitch Diameter Table For Nos. 575 and 585 Screw Thread Micrometers “V” Standard Thread Form American Standard Acme Screw Thread Dimensions 662 Temperature Conversion High Temperatures Judged by Color and Colors for Tempering Rules Relative to the Circle 663 Standards for Sheet and Wire Gages with corresponding Starrett Gages Dimensions of Sizes in Decimal Parts of an Inch 664 Triangle Chart For the Rapid Solution of Right-Angle and Oblique-Angle Triangles
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REFERENCE TABLES Contents - J.W. Donchin Co648 Metric and English Equivalents Linear Measure Metric to Inch Inch to Metric 1 millimeter = 0.03937 inch 1 inch = {25.4 millimeters 1
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J.W. DONCHIN CO. 4841-43 W. Chicago Ave. • Chicago, IL 60651-3224Ph: 773-261-2182 • Fax: 773-261-2867 • [email protected] • www.jwdonchin,com
REFERENCE TABLESContents
Page Description Range
647 REFERENCE TABLES
648 Metric and English Equivalents
649 Inch to Millimeter Conversion Table
650 Millimeter to Inch Conversion Table
651 Decimal Equivalents of 8ths, 16ths, 32nds, 64ths
652 Decimal Equivalents of Number Size Drills
American Standard Pipe Thread and Tap Drill Sizes
653 American National and Unified Coarse and
Fine Thread Dimensions and Tap Drill Sizes
654 American National and Unified Coarse and
Fine Thread Dimensions and Tap Drill Sizes (continued)
Millimeter Tap Drill Sizes
655 Tap Drill Sizes For Fractional Size Threads
Approximately 65% Depth Thread / AMERICAN NATIONAL THREAD FORM
656 Double Depth of Screw Threads
ISO External Threads Medium Fit
657 American Standard Acme Screw Thread Dimensions
Tapers and Angles
658 General Guide for Cutting Speeds and Feeds for Drills
Guide for Drill Feeds
Guide for Peripheral Speeds
659 Pitch Diameter Tables – American National Thread Form
For Nos. 575 and 585 Screw Thread Micrometers
660 Pitch Diameter Tables
For Nos. 575 and 585 Screw Thread Micrometers
661 Pitch Diameter Table
For Nos. 575 and 585 Screw Thread Micrometers “V” Standard Thread Form
American Standard Acme Screw Thread Dimensions
662 Temperature Conversion
High Temperatures Judged by Color and Colors for Tempering
Rules Relative to the Circle
663 Standards for Sheet and Wire Gages with corresponding Starrett Gages
Dimensions of Sizes in Decimal Parts of an Inch
664 Triangle Chart
For the Rapid Solution of Right-Angle and Oblique-Angle Triangles
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REFERENCE TABLES
648
Metric and English Equivalents
Linear MeasureMetric to Inch Inch to Metric
1 millimeter = 0.03937 inch1 inch = { 25.4 millimeters
1 centimeter = 0.3937 inch 2.54 centimeters39.37 inches
1 foot = { 304.8 millimeters1 meter = { 3.2808 feet 0.3048 meter
(Commercial) 1 short ton (2,000 pounds) = .907 metric ton = 907 kilograms1 metric ton = 0.9842 ton (of 2240 pounds) = 2204.6 pounds 1 long ton (2,240 pounds) = 1.016 metric ton = 1016 kilograms
General Guide for Cutting Speeds and Feeds for Drills
The following information is a general guide. Specific jobs mayneed to be modified because of varying job conditions, such ascoolant, equipment and job requirements.
Drill Dia. Feed per Rev. Drill Dia. Feed per Rev.
Under 1/8� .001� - .002� Under 3 mm .025 - .05 mm
1/8� - 1/4� .002� - .004� 3 - 6 mm .05 - .100 mm
1/4� - 1/2� .004� - .007� 6 - 13 mm .100 - .180 mm
1/2� - 1� .007� - .015� 13 - 25 mm .180 - .370 mm
Over 1� .015� - .025� Over 25 mm .370 - .630 mm
Feet/Minute Meters/Minute
Material Carbon Drill HSS Drill Carbon Drill HSS Drill
Machinery Steel 30 80 9 24
Cast Iron 35 100 10.5 30
Brass 60 200 18 60
Alloy Steel – 50 – 15
PERIPHERAL SPEEDS – FEET PER MINUTE (METERS PER MINUTE)
Drill feeds are governed by the size of the drill and also the materialto be drilled.
The lower feeds should be used when drilling relatively hardmaterials such as alloy steels. The higher feeds should be usedwhen drilling relatively soft materials such as aluminum and brass.
These feeds are based on the peripheral speed of a drill.
REFERENCE TABLES
659
Pitch Diameter Tables – American National Thread FormFor Nos. 575 and 585 Screw Thread Micrometers
Basic Caliperand Reading SingleMax. Threads or Max. Depth
Outside Per Pitch ofNo. Diameter Inch Diameter Thread
0 .060 80 .0519 .0081
1 .073 72 .0640 .0090
2 .086 64 .0759 .0101
3 .099 56 .0874 .0116
4 .112 48 .0985 .0135
5 .125 44 .1102 .0148
6 .138 40 .1218 .0162
7 .151 36 .1330 .0180
8 .164 36 .1460 .0180
9 .177 32 .1567 .0203
10 .190 30 .1684 .0217
12 .216 28 .1928 .0232
14 .242 24 .2149 .0271
16 .268 22 .2385 .0295
18 .294 20 .2615 .0325
20 .320 20 .2875 .0325
22 .346 18 .3099 .0361
24 .372 16 .3314 .0406
26 .398 16 .3574 .0406
28 .424 14 .3776 .0464
30 .450 14 .4036 .0464
CaliperReading Single
Diameter Threads of Pitch DepthInches per Inch Diameter of Thread
Diameter Threads Caliper Reading Single Depth Diameter Threads Caliper Reading Single DepthInches per Inch or Pitch Diameter of Thread Inches* per Inch or Pitch Diameter of Thread
* These figures give the outside diameter for screws with threads cut theoretically sharp. As it is not practical to make these threads sharp, the outside diameter will measure less than the figures given, the pitch diameter remaining the same.
REFERENCE TABLES
662
To Find Circumference– Multiply diameter by 3.1416 – Or divide diameter by 0.3183
To Find Diameter– Multiply circumference by 0.3183 – Or divide circumference by 3.1416
To Find Radius– Multiply circumference by 0.15915– Or divide circumference by 6.28318
To Find Side of an Inscribed Square– Multiply diameter by 0.7071 – Or multiply circumference by 0.2251 – Or divide circumference by 4.4428
To Find Side of an Equal Square– Multiply diameter by 0.8862 – Or divide diameter by 1.1284– Or multiply circumference by 0.2821 – Or divide circumference by 3.545
Rules Relative to the Circle
Temperature Conversion
High Temperatures Judged by Color and Colors for Tempering
Square– A side multiplied by 1.4142 equals diameter of its
circumscribing circle– A side multiplied by 4.443 equals circumference of its
circumscribing circle– A side multiplied by 1.128 equals diameter of an equal side– A side multiplied by 3.547 equals circumference of an
equal circle
To Find the Area of a Circle– Multiply circumference by one-quarter of the diameter– Or multiply the square of diameter by 0.7854– Or multiply the square of circumference by .07958– Or multiply the square of 1/2 diameter by 3.1416
To Find the Surface of a Sphere or Globe– Multiply the diameter by the circumference– Or multiply the square of a diameter by 3.1416– Or multiply four times the square of radius by 3.1416
Using this table to convert Fahrenheit degrees (Fº) directly to Celsiusdegrees (Cº) and vice versa. It covers the range of temperaturesused in most hardening, tempering and annealing operations.
Lower, higher and intermediate conversions can be made bysubstituting a known Fahrenheit (Fº) or Celsius (Cº) temperaturefigure in either of the following formulas.
Fº = Cº x 9 + 325 Cº = Fº - 32 x 59
Degrees Degrees High Temperatures JudgedCentigrade Fahrenheit by Color
400 752 Red heat, visible in the dark525 975 Red heat, visible in daylight700 1292 Dark red900 1652 Cherry-red
1100 2012 Orange-red1300 2372 Yellow-white1500 2732 Brilliant white
Degrees DegreesCentigrade Fahrenheit Colors for Tempering
221.1 430 Very pale yellow237.8 460 Straw-yellow254.4 490 Yellow-brown260.0 500 Brown-yellow271.1 520 Brown-purple282.2 540 Full purple293.3 560 Full blue
REFERENCE TABLES
663
Dimensions of Sizes in Decimal Parts of an InchStarrett Sheet andWire Gage No. 188Cat. Nos. No. 281 No. 245 No. 287 No. 280 No.283
American S. & W. U.S. Standard Gage Number of American or Birmingham or Washburn & Moen, Co’s. Music for Sheet and Wire Gage Brown & Sharpe Stubs’ Iron Wire (Worcester, MA) Wire Gage Stubs’ Steel Wire Plate Iron and Steel
Standards for Sheet and Wire Gages with corresponding Starrett Gages
.46875
.4375
.40625
.375
.34375
.3125
.28125
.265625
.250
.234375
.21875
.203125
.1875
.171875
.15625
.140625
.125
.109375
.09375
.078125
.0703125
.0625
.05625
.050
.04375
.0375
.034375
.03125
.028125
.025
.021875
.01875
.0171875
.015625
.0140625
.0125
.0109375
.01015625
.009375
.00859375
.0078125
.00703125
.006640625
.00625
REFERENCE TABLES
664
Triangle ChartFor the Rapid Solution of Right-Angle and Oblique-Angle Triangles
REFERENCE TABLES
J.W. DONCHIN CO.Precision Measuring Equipment and Industrial Supplies since 1924.
www.jwdonchin.com
4841 W. Chicago Ave. - Chicago, IL 60651 • Phone: 773-261-2182 • Fax: 773-261-2867 • [email protected]
J.W. DONCHIN CO.
J.W. Donchin Co. was established in 1924 and has been known world wide ever since. Customer Service is our Main Focus. We offerExpert Product Knowledge, Large Stocking Inventory and Competitive Pricing to assist you in locating and selecting the correcttool or product to fit your needs. (J.W. Donchin Co. is one of L.S. Starrett’s largest stocking distributors.)