Mechanical Requirements
Stainless Steel & Non-Ferrous Fasteners
|
Grade(1)
|
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 (2)
Strength
|
Tensile
Strength
|
Yield (2)
Strength
|
Tensile
Strength
|
Elong-
ation(3)
|
Min psi
|
Min psi
|
Min psi
|
Min psi
|
% Min.
|
Min
|
psi
|
Min
|
| 302 |
Stainless US |
30,000 |
75,000 |
30,000 |
75,000 |
20 |
B75 |
75,000 |
B75 |
| 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 |
| 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(7) |
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 |
|
