91430 SPS cover edited - Electronic Fasteners Inc

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UNBRAKO Metric <strong>Fasteners</strong>UNBRAKO Metric <strong>Fasteners</strong> arethe strongest off-the-shelf threadedfasteners you can buy. Theirexclusive design features andclosely controlled manufacturingprocesses insure the dimensionalaccuracy, strength and fatigueresistance needed for reliabilityin today’s advanced technology.They are manufactured with thesame methods and features astheir inch-series counterpart.StrengthUNBRAKO metric socket head capscrews are made into propertyclass 12.9 with a minimum ultimatetensile strength of 1300 or 1250MPa depending on screw diameter.Precision in manufacturingand careful control in stress areasinsure strength in such criticalareas as heads, sockets, threads,fillets, and bearing areas.When you purchase UNBRAKOmetric socket screw products, youcan be sure that they meet orexceed the strength levels of allcurrent standards, including thethree most common-ANSI, ISOand DIN. Unbrako is representedon several ASME, ANSI, ASTMand ISO committees. ANSI (American NationalStandards Institute) documentsare published by ASME (TheAmerican Society of MechanicalEngineers) and are familiar toalmost all users of socket screwproducts in the U.S.A. ASTM (American Society forTesting and Materials). ManyANSI documents list dimensionalinformation but referto ASTM specifications formaterials, mechanical properties,and test criteria. ISO (International StandardsOrganization) is a standardsgroup comprising 70 membernations. Its objective is toprovide standards that willbe completely universal andcommon to all countriessubscribing. DIN (Deutsche IndustriesNormen) is the Germanstandards group.NOTE: The proper tighteningof threaded fasteners can havea significant effect on theirperformance.36
A WARNING TO METRIC FASTENER USERSMetric socket cap screws are NOT sold in a single strength levellike U.S. inch socket screws.Property Class General Material Strength Level, UTS min. MPa (KSI)International Standards Organization, ISOProperty Class 8.8 Carbon Steel 800 (116) < M16830 (120) ≥ M16Property Class 10.9 Alloy Steel 1040 (151)Property Class 12.9 Alloy Steel 1220 (177)USA StandardsASTM A574M Alloy Steel 1220 (177)Unbrako StandardsASTM A574M Alloy Steel 1300 (189) ≤ M161250 (181) > M16STANDARDSThe use of metric fasteners in the worldwide market has led to the creation of many standards. Thesestandards specify the fastener requirements: dimensions, material, strength levels, inspection, etc. Differentstandards are the responsibility of various organizations and are not always identical. Unbrako supplies metricfasteners for maximum interchangeability with all standards. This Engineering Guide was published with themost current values, which are however subject to change by any standards organization at any time.37
Page 1 and 2: Engineering GuideInch & Metric
Page 3 and 4: TABLE OF CONTENTSUNBRAKO ® Socket
Page 5 and 6: INCH QUICK SELECTOR GUIDEPERFORMANC
Page 8 and 9: SOCKET HEAD CAP SCREWS 1960 Series
Page 10 and 11: SOCKET HEAD CAP SCREWS 1960 Series
Page 12 and 13: FEWER HOLES TO DRILL AND TAPthree s
Page 14 and 15: SHOULDER SCREWS Dimensions Mechan
Page 16 and 17: FLAT HEAD SOCKET SCREWSDimensionsDe
Page 18 and 19: FLAT HEAD AND BUTTON HEAD SOCKET SC
Page 20 and 21: SOCKET SET SCREWS Dimensions Appl
Page 22 and 23: SOCKET SET SCREWS Point Selection
Page 24 and 25: SOCKET SET SCREWS Torisional and A
Page 26 and 27: PRESSURE PLUGSDRYSEAL TYPE with 3/4
Page 28 and 29: PRESSURE PLUGS Application DataPre
Page 30 and 31: DOWEL PINS Dimensions Application
Page 32 and 33: PULL-OUT DOWEL PINS Dimensions Ap
Page 34 and 35: HEX KEYS Dimensions Mechanical Pr
Page 36 and 37: THREAD CONVERSION CHARTSDIAMETER/TH
Page 40 and 41: METRIC SOCKET HEAD CAP SCREWSDimens
Page 42 and 43: METRIC SOCKET FLAT HEAD CAP SCREWSD
Page 44 and 45: METRIC SOCKET HEAD SHOULDER SCREWST
Page 46 and 47: METRIC SOCKET SET SCREWS Knurled C
Page 48 and 49: METRIC LOW HEAD CAP SCREWSThreads:
Page 50 and 51: ISO TOLERANCES FOR METRIC FASTENERS
Page 52 and 53: CONVERSION CHARTSI UNITS & CONVERSI
Page 54 and 55: INSTALLATION CONTROLSeveral factors
Page 56 and 57: Their disadvantages are… lower te
Page 58 and 59: AN EXPLANATION OF JOINT DIAGRAMSWhe
Page 60 and 61: A s = π (D 2 H - D 2 h )Effect of
Page 62 and 63: F 1F 1Fig. 10 Force diagrams show t
Page 64 and 65: TIGHTENING TORQUES AND THETORQUE-TE
Page 66 and 67: STRIPPING STRENGTH OF TAPPED HOLESC
Page 68 and 69: THREAD STRIPPING STRENGTHIN VARIOUS
Page 70 and 71: HIGH-TEMPERATURE JOINTSBolted joint
Page 72 and 73: mine the clamping stress at assembl
Page 74 and 75: Electroplating: Two broad classes o
Page 76 and 77: GALVANIC CORROSIONMMMMMM M M M M M
Page 78 and 79: TABLE 20LOW-TEMPERATURE IMPACT PROP
Page 80 and 81: TYPICAL TENSION IMPACT STRENGTH,EFF
Page 82 and 83: THREADS IN BOTH SYSTEMSThread forms
Page 84 and 85: THROUGH-HOLE PREPARATIONClose Fit:
Page 86 and 87: HARDNESS - TENSILE CONVERSIONINCHRO
Page 88 and 89:
ENGINEERING PART NUMBERS - INCHUnbr
Page 90 and 91:
PRESSURE PLUG PART NUMBERSBasic Par
Page 92:
INDUSTRIAL FASTENERS GROUPUnbrakoTh
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