Mechanical Requirements for Stainless Steel & Non-Ferrous Fastenerss
Grade | General Descpription of Material |
Bolts, Screws and Studs | Nuts | ||||||
Full Size Bolts, Screws, Studs |
Machine Test Sprecimens of Bolts, Screws, Studs |
Hardness Rockwell |
Proof Load Stress |
Hardness Rockwell |
|||||
Yield
Strength |
Tensile
Strength |
Yield
Strength |
Tensile
Strength |
Elong- ation |
|||||
Min psi | Min psi | Min psi | Min psi | % Min. | Min | psi | Min | ||
303A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B75 | 75,000 | B75 |
304-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B75 | 75,000 | B75 |
304 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
304-SH | Austenitic Stainless Steel- Strain Hardened |
See Note 6 |
See Note 6 |
See Note 6 |
See Note 6 |
15 | C25 | See Note 6 |
C20 |
305-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
305 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
305-SH | Austenitic Stainless Steel- Strain Hardened |
See Note 6 |
See Note 6 |
See Note 6 |
See Note 6 |
15 | C25 | See Note 6 |
C20 |
316-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
316 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
316-SH | Austenitic Stainless Steel- Strain Hardened |
See Note 6 |
See Note 6 |
See Note 6 |
See Note 6 |
15 | C25 | See Note 6 |
C20 |
XM7-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
XM7 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
384-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
384 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
410-H | Martensitic Stainless Steel- Hardened and Tempered |
95,000 | 125,000 | 95,000 | 125,000 | 20 | C22 | 125,000 | C22 |
410-HT | Martensitic Stainless Steel- Hardened and Tempered |
135,000 | 180,000 | 135,000 | 180,000 | 12 | C36 | 180,000 | C36 |
416-H | Martensitic Stainless Steel- Hardened and Tempered |
95,000 | 125,000 | 95,000 | 125,000 | 20 | C22 | 125,000 | C22 |
416-HT | Martensitic Stainless Steel- Hardened and Tempered |
135,000 | 180,000 | 135,000 | 180,000 | 12 | C36 | 180,000 | C36 |
430 | Ferritic Stainless Steel |
40,000 | 70,000 | 40,000 | 70,000 | 20 | B75 | 70,000 | B75 |
464-HF | Naval Brass | 15,000 | 52,000 | 14,000 | 50,000 | 25 | B56 | 52,000 | B56 |
464 | Naval Brass | 27,000 | 60,000 | 25,000 | 57,000 | 25 | B65 | 60,000 | B65 |
462 | Naval Brass | 27,000 | 52,000 | 24,000 | 50,000 | 20 | B65 | 52,000 | B65 |
642 | Aluminum Bronze | 35,000 | 72,000 | 35,000 | 72,000 | 15 | B75 | 72,000 | B75 |
630 | Aluminum Bronze | 50,000 | 105,000 | 50,000 | 105,000 | 10 | B90 | 105,000 | B90 |
614 | Aluminum Bronze | 40,000 | 75,000 | 40,000 | 75,000 | 30 | B70 | 75,000 | B70 |
510 | Phosphor Bronze | 35,000 | 60,000 | 35,000 | 60,000 | 15 | B60 | 60,000 | B60 |
675 | Manganese Bronze | 22,000 | 55,000 | 22,000 | 55,000 | 20 | B60 | 55,000 | B60 |
655-HF | Silicon Bronze | 20,000 | 52,000 | 18,500 | 50,000 | 20 | B60 | 52,000 | B60 |
655 | Silicon Bronze | 38,000 | 70,000 | 36,000 | 68,000 | 15 | B75 | 70,000 | B75 |
651 | Silicon Bronze | 45,000 | 75,000 | 42,500 | 72,000 | 8 | B75 | 75,000 | B75 |
661 | Silicon Bronze | 38,000 | 70,000 | 38,000 | 70,000 | 15 | B75 | 70,000 | B75 |
NICU- A-HF |
Nickel-Copper Alloy A |
25,000 | 70,000 | 25,000 | 70,000 | 20 | B70 | 70,000 | B70 |
NICU-A | Nickel-Copper Alloy A |
40,000 | 80,000 | 40,000 | 80,000 | 20 | B80 | 80,000 | B80 |
NICU-B | Nickel-Copper Alloy B |
40,000 | 80,000 | 40,000 | 80,000 | 20 | B80 | 80,000 | B80 |
NICU-K | Nickel-Copper Aluminum Alloy |
90,000 | 130,000 | 90,000 | 130,000 | 20 | C24 | 130,000 | C24 |
2024-T4 | Aluminum Alloy | 40,000 | 55,000 | 40,000 | 55,000 | 14 | B70 | 55,000 | B70 |
6061-T6 | Aluminum Alloy | 35,000 | 42,000 | 35,000 | 42,000 | 12 | B50 | 42,000 | B50 |
Note 6. Austenitic stainless steel, strain hardened bolts, screws, studs, and nuts shall have the following strength per properties.
Product Size |
Bolts, Screws, Studs | Nuts | |||
Tested Full Size | Machine Test Specimens, | Proof Load Stress |
|||
Yield Strength |
Tensile Strength |
Yield Strength |
Tensile Strength |
||
in. | min psi | min psi | min psi | min psi | psi |
to 5/8 in. | 100,000 | 125,000 | 90,000 | 115,000 | 125,000 |
over 5/8 to 1 in. | 70,000 | 105,000 | 65,000 | 100,000 | 105,000 |
over 1 to 1-1/2 in. | 50,000 | 90,000 | 45,000 | 85,000 | 90,000 |
Hardness Conversion Table
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