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Metric Bolt Head Markings. In this video our fastener spe. It too is made in China. Grade 2 English Bolt 2. CA 90405 FabriSteel Products Inc 22900 W Ei ht Mile Rd Southfield.
Nas Bolt Head Markings Bolt Heads Bolt Bolt Threads Bolts And Washers From ar.pinterest.com
In this video our fastener spe. Grade 7 English Bolt 4. The below diagram shows examples of English and Metric bolt and nut markings. BSA 1967 TO 70 650 A75 FRONT DRUM HUB. Metric bolts are a bit more straight forward usually having their strength class number stamped right on the bolt head. Manufacturers identification mark eg X on head of bolts and screws and on one end of studs and stud bolts.
Symbol for identification of grade ie B8M applied to head.
Bolt Dimensions Metric Grade Markings Torque Values Applications ENGINE 163-224 cc 270-459 cc Name Size Torque Value Size Torque Value Nm ft-lb Nm ft-lb Connecting Rod Bolt M7 12 9 M8 18 13 Cylinder Head Bolt M8 24 18 M10 39 29 Flywheel Nut M14 75 55 M16 115 85 Crankcase Cover Bolt M8 24 18 M8 25 18 Oil Alert Connector Nut M10 10 7 M10 10 7 Muffler Installation. BSA 1971 TO 1973 A65 A70 A75 B50GS FRONT DRUM. Yield Strength psi Min. Grade 5 fasteners have a minimum tensile strength of 120ksi for diameters ¼ inch through 1 inch and 105ksi for diameters over 1 inch through 1-12 inches. Over 34 thru 1-12. BSA 1971 TO 73 A65 A70 A75 B50GS REAR DRUM HUB.
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DIN 931-A2A4 ISO 4014 Hex Head Cap Screw Part Thread. Grade 5 English Bolt 3. So as you can see this bolt head has Wilson-Garners manufacturer mark and three radial lines. Metric Head Markings. STEEL MOTORCYCLE ENGINE STUD - PLATE KITS.
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One is Grade 5 and one is Grade 8. Grade 7 English Bolt 4. The first is for conventional unmarked or 4 marked bolts and the second for 7 marked bolts. These lines indicate that the bolt is a Grade 5. The table includes drawings showing bolts either unmarked or.
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Rather than being stamped with F593CD or F593GH ASTM specifications for inch series stainless bolts metric bolts will have a metric property class designation stamped on the head. ASTM A 307 Grade A Grade B Regular series and Heavy Series A or B 67614 B only 67613 Galv. Proof Load MPa Min Yield MPa. This property class designation conveys most of the relevant necessary information about the fastener due to the design of the metric marking system. In this video our fastener spe.
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A or B 67614 Galv. STEEL MOTORCYCLE ENGINE STUD - PLATE KITS. Low or medium carbon steel. Rather than being stamped with F593CD or F593GH ASTM specifications for inch series stainless bolts metric bolts will have a metric property class designation stamped on the head. Symbol for identification of grade ie B8M applied to head.
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Spend 250 and above and get a 15 Discount. Bolt Marking Identification Metric UNCUNF M BM 88 BM 88 M BM 109 M BM B7 A2 M BM 70 A4 M BM 70 BM BM Metric Class 46 Mild Steel Metric Class 88 High Tensile Metric Class 109 Higher Tensile Metric Grade 304 Stainless Steel Metric Grade 316 Stainless Steel Imperial SAE Grade 5 High Tensile Imperial SAE Grade 8 Higher Tensile B7 Studs High. Hex head bolts M5 and larger must have the property class marked on the head of the bolt either in raised or depressed lettering. In the case of hex head bolts most of them come with markings. Symbol for identification of grade ie B8M applied to head.
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Metric bolts are a bit more straight forward usually having their strength class number stamped right on the bolt head. Line stamped under B8M. Refer to the Imperial vs Metric Strength Chart for strength comparisons. BSA 1967 TO 70 650 A75 FRONT DRUM HUB. Metric bolts have numbers standard bolts have little lines and rusty bolts good luckTensile strength is is the maximum amount of stress a bolt can endure from being stretched or pulled until it fails.
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Radial lines such those used to mark SAE grades are never used on metric bolts. The table includes drawings showing bolts either unmarked or. Hex head bolts M5 and larger must have the property class marked on the head of the bolt either in raised or depressed lettering. But what do they mean. Before I get to talk about the major metric spec that we use ISO 898-1 I.
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Yield Strength psi Min. Traceability is important particularly in the case of fastener failure. Some metric nuts also have the strength class number stamped on their face. Fasteners smaller than M5 and those with slotted or recessed heads whatever their diameter need not be marked. Low grade bolts are going to work for most.
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UNIFIED BOLTS MECHANICAL PROPERTIES. Metric Head Markings. Proof Load MPa Min Yield MPa. Symbol for identification of grade ie B8M applied to head. Radial lines such those used to mark SAE grades are never used on metric bolts.
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So as you can see this bolt head has Wilson-Garners manufacturer mark and three radial lines. Proof Load MPa Min Yield MPa. For hex head inch and metric CONNECTING ROD BOLTS aALL STUDS THREADED END SHOWN head delta in indent bp ot nut 07 0 Radial Lines 20 apart Faber Enterprises Inc 2316 Lincoln Blvd Santa Monica. Metric bolts have numbers standard bolts have little lines and rusty bolts good luckTensile strength is is the maximum amount of stress a bolt can endure from being stretched or pulled until it fails. Grade 5 fasteners are considered to be medium-strength fasteners.
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Proof Load MPa Min Yield MPa. DIN 933-A2A4 ISO 4017 Hex Head Cap Screw Full Thread. Grade 5 English Bolt 3. DIN 939-58 Metric Studs. Low grade bolts are going to work for most.
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Spend between 100 - 249 and get a 10 Discount. Line stamped under B8M. These lines indicate that the bolt is a Grade 5. All sizes under 16mm. B only 67615 Cad.
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Proof Load psi Yield Strength Min psi Tensile Strength Min psi Low or Medium Carbon Steel 14 THRU 1 ½ 33000 36000 LowCarbon Steel 14 thru 4 SAE J429 Grade 2 Low or Medium Carbon Steel 14 thru 34 Over 34 thru 1 ½ 55000 33000 57000 36000 74000 60000. Some metric nuts also have the strength class number stamped on their face. Another we have seen has JDF on the head. HEAD MARKING GRADE AND MATERIAL Nominal Size Range inches Proof Load psi Min. BSA 1971 TO 73 A65 A70 A75 B50GS REAR DRUM HUB.
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Bolt Dimensions Metric Grade Markings Torque Values Applications ENGINE 163-224 cc 270-459 cc Name Size Torque Value Size Torque Value Nm ft-lb Nm ft-lb Connecting Rod Bolt M7 12 9 M8 18 13 Cylinder Head Bolt M8 24 18 M10 39 29 Flywheel Nut M14 75 55 M16 115 85 Crankcase Cover Bolt M8 24 18 M8 25 18 Oil Alert Connector Nut M10 10 7 M10 10 7 Muffler Installation. And finally since I know people are coming here because they do not know what the lines on the heads of bolts mean here is an example of two bolts Made in Canada. Bolt Dimensions Metric Grade Markings Torque Values Applications ENGINE 163-224 cc 270-459 cc Name Size Torque Value Size Torque Value Nm ft-lb Nm ft-lb Connecting Rod Bolt M7 12 9 M8 18 13 Cylinder Head Bolt M8 24 18 M10 39 29 Flywheel Nut M14 75 55 M16 115 85 Crankcase Cover Bolt M8 24 18 M8 25 18 Oil Alert Connector Nut M10 10 7 M10 10 7 Muffler Installation. A or B 67614 Galv. DIN 931-A2A4 ISO 4014 Hex Head Cap Screw Part Thread.
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Some metric nuts also have the strength class number stamped on their face. Radial lines such those used to mark SAE grades are never used on metric bolts. And finally since I know people are coming here because they do not know what the lines on the heads of bolts mean here is an example of two bolts Made in Canada. Bolt Marking Identification Metric UNCUNF M BM 88 BM 88 M BM 109 M BM B7 A2 M BM 70 A4 M BM 70 BM BM Metric Class 46 Mild Steel Metric Class 88 High Tensile Metric Class 109 Higher Tensile Metric Grade 304 Stainless Steel Metric Grade 316 Stainless Steel Imperial SAE Grade 5 High Tensile Imperial SAE Grade 8 Higher Tensile B7 Studs High. Manufacturers identification mark eg X on head of bolts and screws and on one end of studs and stud bolts.
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