Mechanical Requirements for 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 |
|
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(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 |
|
