[Fot] ARP and other additions to the bolt material strength chart

vfracing at aol.com vfracing at aol.com
Sun Jan 16 07:57:45 MST 2022


Amici:
Joe Boruch suggested that ARP bolt materials be added to the chart and Mike Harmuth suggested pdf format, so here they are!
Also added is the sometimes used British nomenclature of noting the tensile strength range, measured in tons per square inch, instead of a letter designation.
Remember, tensile strength is not the only consideration.  Ductility and fatigue life are also critical, as are thread formation and location.  For example, note that wheel studs, critically loaded components, are not made of the strongest material.  SAE wheel studs have a tensile strength similar to a grade 5 bolt but have a special composition all their own to withstand millions of reverse loading cycles without fatigue.
Enjoy!
Phil Gott

| Bolt Grade | Minimum Tensile Strength (000 psi) |
|
| AN*** | SAE* | British** | ARP**** | Metric* | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 | 160 | 170 | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 260 | 270 | 280 | 290 | 300 | 310 |
|   | 2 > 3/4" |   |   |   |   | 60 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   | 2 to 3/4" |   |   |   |   |   | 74 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | P |   |   |   |   | 70-90 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | Q |   |   |   |   |   | 80-100 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | R or "45-55" |   |   |   |   |   |   | 90-110 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | S |   |   |   |   |   |   |   | 100-120 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | T  |   |   |   |   |   |   |   |   | 110-130 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   |   |   | 8.8 to 16mm |   |   |   |   |   |   | 116 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   |   |   | 8.8 > 16mm |   |   |   |   |   |   |   | 120 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   | 5 |   |   |   |   |   |   |   |   |   |   | 120 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| All |   |   |   |   |   |   |   |   |   |   |   | 125 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | U |   |   |   |   |   |   |   |   |   | 120-140 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | V |   |   |   |   |   |   |   |   |   |   | 130-150 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | W |   |   |   |   |   |   |   |   |   |   |   | 140-160 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   | 8 |   |   |   |   |   |   |   |   |   |   |   |   |   | 150 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   |   |   | 10.9 |   |   |   |   |   |   |   |   |   |   | 151 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | X |   |   |   |   |   |   |   |   |   |   |   |   | 150-170 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   | Y |   |   |   |   |   |   |   |   |   |   |   |   |   | 160-180 |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   |   |   | 12.9 |   |   |   |   |   |   |   |   |   |   |   |   | 177 |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   |   | Titanium |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 180 |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   |   |   | 8740 |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 180-210 |   |   |   |   |   |   |   |   |   |   |
|   |   |   | ARP 2000 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 220 |   |   |   |   |   |   |   |   |   |
|   |   |   | L19 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 260 |   |   |   |   |   |
|   |   |   | 625 Plus |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 260-280 |   |   |   |
|   |   |   | ARP 325 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 260-280 |   |   |   |
|   |   |   | Aermet |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   | 290-310 |
| Sources:  *Bolt Depot Inc. and **Trojansf.co.uk/technical/fastener-grades and ***Skyshop and ****ARP web page.  ARP bolt grades are registered trademarks of ARP or CRS Holdings Inc. |
|

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