Inch Bolt Mechanical Strength
Printable shop wall chart: Inch Bolt Mechanical Strength. Free letter-size PDF to print and post at the counter; 25 x 36 inch poster version available.
| Specification | Size range | Proof | Yield (min) | Tensile | Marking |
|---|---|---|---|---|---|
| SAE J429 Grade 2 | 1/4 - 3/4 in | 55 ksi | 57 ksi | 74 ksi min | None (maker ID) |
| SAE J429 Grade 2 | over 3/4 - 1-1/2 in | 33 ksi | 36 ksi | 60 ksi min | None (maker ID) |
| SAE J429 Grade 5 | 1/4 - 1 in | 85 ksi | 92 ksi | 120 ksi min | 3 radial lines |
| SAE J429 Grade 5 | over 1 - 1-1/2 in | 74 ksi | 81 ksi | 105 ksi min | 3 radial lines |
| SAE J429 Grade 8 | 1/4 - 1-1/2 in | 120 ksi | 130 ksi | 150 ksi min | 6 radial lines |
| ASTM A307 Grade A | 1/4 - 4 in | - | - | 60 ksi min | 307A (when marked) |
| ASTM A449 Type 1 | 1/4 - 1 in | 85 ksi | 92 ksi | 120 ksi min | 3 lines / A449 |
| ASTM A354 BC | 1/4 - 2-1/2 in | 105 ksi | 109 ksi | 125 ksi min | BC |
| ASTM A354 BD | 1/4 - 2-1/2 in | 120 ksi | 130 ksi | 150 ksi min | BD |
| ASTM F3125 A325 | 1/2 - 1-1/2 in | 85 ksi | 92 ksi | 120 ksi min | A325 |
| ASTM F3125 A490 | 1/2 - 1-1/2 in | 120 ksi | 130 ksi | 150 - 173 ksi | A490 |
| ASTM A574 socket | to 1/2 in / over 1/2 in | - | - | 180 / 170 ksi min | Maker ID |
Header shows the SAE and structural marks; A307, A449, A354 and A574 are listed for comparison. Verify against the current edition of each standard.
These tables carry the same figures as the printed sheet below.
The printed sheet
25 x 36 inch poster version
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Text version of this sheet
GRADE 2
GRADE 5
GRADE 8
307A
A449
BD
A325
A490
A307 A
A449
A354 BD
A325
A490
Minimum mechanical properties of common inch bolting specifications
Specification
Size range
Proof
Yield (min)
Tensile
Marking
SAE J429 Grade 2
1/4 - 3/4 in
55 ksi
57 ksi
74 ksi min
None (maker ID)
SAE J429 Grade 2
over 3/4 - 1-1/2 in
33 ksi
36 ksi
60 ksi min
None (maker ID)
SAE J429 Grade 5
1/4 - 1 in
85 ksi
92 ksi
120 ksi min
3 radial lines
SAE J429 Grade 5
over 1 - 1-1/2 in
74 ksi
81 ksi
105 ksi min
3 radial lines
SAE J429 Grade 8
1/4 - 1-1/2 in
120 ksi
130 ksi
150 ksi min
6 radial lines
ASTM A307 Grade A
1/4 - 4 in
-
-
60 ksi min
307A (when marked)
ASTM A449 Type 1
1/4 - 1 in
85 ksi
92 ksi
120 ksi min
3 lines / A449
ASTM A354 BC
1/4 - 2-1/2 in
105 ksi
109 ksi
125 ksi min
BC
ASTM A354 BD
1/4 - 2-1/2 in
120 ksi
130 ksi
150 ksi min
BD
ASTM F3125 A325
1/2 - 1-1/2 in
85 ksi
92 ksi
120 ksi min
A325
ASTM F3125 A490
1/2 - 1-1/2 in
120 ksi
130 ksi
150 - 173 ksi
A490
ASTM A574 socket
to 1/2 in / over 1/2 in
-
-
180 / 170 ksi min
Maker ID
Header shows the SAE and structural marks; A307, A449, A354 and A574 are listed for comparison. Verify against the current edition of each standard.
The Fastener App | TheFastenerApp.com
Fastener Guide reference FG-E2FC12 · thefastenerapp.com/fastener-guide/wall-charts/inch-bolt-mechanical-strength · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.
