|
|
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
|
|
Bluish.ice