904L is an unstabilized highly alloyed, low carbon stainless steel grade belonging to the austenitic class of steels. What makes 904L different from the other austenitic alloys is the significant content of copper in its alloy. The addition of copper in its alloy plays a major role in its resistance to acids, especially solutions containing sulfuric acid.
904L Stainless Steel Fasteners
Although the 904L Stainless Steel Fasteners is highly resistant to acetic acid, sulfuric acid and phosphoric acid in comparison to the more traditional chromium steel grades, use of 904L in halide acidic solutions and acids, such chlorine, fluorine, etc must be limited. This is because halogen containing solutions such as hydrochloric acid quickly decays the alloy. However, the 904L Bolts Nuts has an excellent performance in chloride solutions, due to its high resistance to pitting, crevice corrosion as well as stress related corrosion cracking.
This being said, SS 904L Screws outperforms other austenitic stainless steels since this particular alloy has a higher alloying content of both nickel as well as molybdenum. 904L Stainless Steel Washers are a disk shaped fitting, available in different shapes and are usually used where a load of a threaded fastener is to be distributed. The threaded fastener in this instance could be a 904L Hex Nut. Generally used in applications such as building, plumbing and general maintenance, the Stainless Steel 904L Threaded Rod helps to stabilise objects made from wood, metal or other materials.
Physical Properties of 904L Stainless Steel Washers
Product
Density (kg/m3)
Elastic Modulus (GPa)
Mean Coefficient of Thermal Expansion (m/m/0C)
Thermal Conductivity (W/m.K)
Specific Heat 0-1000C (J/kg.K)
Electrical Resistivity (n.m)
0-1000C
0-3150C
0-5380C
at 1000C
at 5000C
904L
8000
200
15.0
–
–
13.0
–
500
850
904L Bolts Nuts Dimensional Table
Minimal Size (D)
THE FLATS
HEAD THICKNESS
BODY DIAMETER
CORNERS
F (MAX)
F (MIN)
H (MAX)
H (MIN)
D (MAX)
D (MIN)
C (MAX)
C (MIN)
m16
24.00
23.67
10.32
9.68
16.00
15.73
27.71
26.75
m10
17.00
15.73
6.63
6.17
10.00
9.78
18.48
17.77
m48
75.00
72.60
31.07
28.93
48.00
47.38
86.60
82.76
m100
145.00
140.00
63.9
60.10
90.00
99.13
167.43
159.60
m12
19.00
17.73
7.76
4.24
12.00
11.73
20.78
20.03
m14
22.00
20.67
9.09
8.51
14.00
13.73
24.25
23.35
m90
130.00
125.50
57.74
54.26
90.00
89.13
150.11
143.07
m24
36.00
35.00
15.44
14.56
24.00
23.67
41.57
39.55
m30
46.00
45.00
19.48
17.92
30.00
29.67
53.12
50.85
m20
30.00
29.16
12.88
12.12
20.00
19.67
34.64
32.95
m80
115.00
111.00
51.58
48.42
80.00
79.26
132.72
126.54
m36
55.00
53.80
23.38
21.63
36.00
35.61
63.51
60.79
m42
65.00
62.90
26.97
25.03
42.00
41.38
75.06
71.71
m64
95.00
91.80
41.32
38.68
64.00
63.26
109.70
104.65
m72
105.00
101.40
46.45
43.55
72.00
71.26
121.24
115.60
m56
85.00
82.20
36.2
33.80
56.00
55.26
98.15
93.71
904L Hex Nut standard quality specification
Specification
ASTM B673/ ASME SB673
Lengths
From 3 upto 200 Millimetre
In Form of:
Round, Threading, Hex, Square as per Gauge Etc.
Sizing
3/6 inch upto 2 inch | M3 – M56
Stainless steel 904L screws Threads
BSF, METRIC, UNC, BSW, UNF or as per needs
Equivalent grades of 904L Stainless Steel Fasteners
Product
UNS No
Old British
Euronorm
Japanese JIS
BS
En
No
Name
904L
N08904
904S13
X1NiCrMoCu25-20-5
1.4539
–
SUS 890L
Stainless Steel 904L Threaded Rod Chemical Resistance Guide
