1 4 20 Bolt Spec 1 Proofload is the published number that full size headed bolts are tested to The bolt is stressed up to the proofload value and if there is no deformation elongation or fracture then the bolt is deemed to have passed
The following suggested tightening torques provide an excellent starting point for determining torque requirements Remember you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication This table is offered as the suggested maximum torque values for threaded products and is only a guide ANSI ASME EXTERNAL Screw Thread Size Chart All units are in inches Unified Screw Threads per ANSI ASME B1 1 1989 R2001 R2001 Nomenclature are used Acceptability criteria are described in ANSI ASME B1 3M 1992 R2001 Note This screw chart is not comprehensive of all available standard threads as provided by the standard Max a
1 4 20 Bolt Spec
1 4 20 Bolt Spec
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NAS BOLTS FSAEparts
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3 U Bolt Dimensions
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1 4 20 BSW Whitworth Thread Dimensions and Tolerances All the relevant data for this tread in one spot Diameters and bolt circles for standard ASME B16 5 flanges 1 4 to 24 inches Class 150 to 2500
When using anti seize reduce the lubed chart reading by 20 to properly torque Always lubricate and use lubed torque values The above recommended assembly torques are offered as a guide only SAE bolt grades indicate the strength of the bolt Each bolt grade has an ideal tightening torque for maximum clamping force without breaking Grade 2 bolts are cheap but not very strong grade 8 bolts are the strongest and most expensive and grade 5 bolts are the most common
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Bolt size as1110 1 iso 4014 as1252 1 din931 3 4 din6921 jis b1189 metric m1 6 3 2 3 2 m2 4 4 m2 5 5 5 m3 5 5 5 5 m4 7 7 m5 8 8 8 7 m6 1 4 1 20 28 20 26 m8 5 16 1 25 1 18 24 18 22 m10 3 8 1 5 1 25 1 16 24 16 20 7 16 14 20 14 18 While Fastenal has used reliable sources and testing to determine these values there are many variables that will effect the results and the use of this information is at sole risk of the user Values through 7 16 quot diameter are stated in inch pounds 1 2 quot diameter and over are stated in
Use the following tables to determine bolt grade and torque specs Choose from our selection of 1 4 quot 20 shoulder bolts including alloy steel shoulder screws metric alloy steel shoulder screws and more Same and Next Day Delivery
Metric Torque Values Chart Free Download
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STS Industrial A307 Grade A Technical Data STS Industrial
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1 4 20 Bolt Spec - SAE bolt grades indicate the strength of the bolt Each bolt grade has an ideal tightening torque for maximum clamping force without breaking Grade 2 bolts are cheap but not very strong grade 8 bolts are the strongest and most expensive and grade 5 bolts are the most common