Mechanical Requirements

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 Specimens 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

Contact Eagle Fastener

Eagle Fastener Corporation
453 E. Dartmoor Drive
Crystal Lake, IL 60014
Mailing Address: PO Box 1259
Crystal Lake, IL 60039-1259
800 . 323 . 6142 ( t )
815 . 455 . 7177 ( t )
815 . 455 . 7205 ( f )
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