Dacromet Coated Bolts
Coatings are used on fasteners to improve their performance, while also increasing their longevity and improving their resistance to corrosion. One such method of improving the fastener’s performance is by using dacromet finish Bolts in any given application. An inorganic material, the production of Dacromet is made by melting zinc and aluminum flakes. The flakes are connected by chromate. Most dacromet coated fasteners suppliers recommend the use of this inorganic finish simply because of the material, which acts firmly because of its adhesive nature.
The use of dacromet coated Bolts is considered to be ideal for applications that have high corrosion resistance requirements. Since the finish is an adhesive layer, dacromet coated stud Bolts are known to have a thin layer, in terms of their thicknesses. This is why this coating is used in the automotive industry, especially because the fastener is used to hold various elements in place. Another characteristic of the dacromet coated screws is that the coating exhibits good heat resistance while offering a low friction coefficient.
The danger of hydrogen embrittlement does not exist. The dacromet coating process takes place in an aqueous media, where the application of the layer takes place with the dispersion of chromate zinc flakes in an aqueous dip-spin process. The coated layer is then dried, followed by subsequent burning at a temperature of 300 °C. The Dacromet® Coated Fasteners also exhibit superior resistance to mechanical damage.
| Description | Price list |
| High Strength Dacromet Coated Hex Head Bolts for Wind Power |
US $ 0.01-0.2 / Piece |
| Dacromet Coated High Strength Long Bolts |
US $ 0.60 / Piece |
| 1/4 X 1in Dacromet Geomet Coated Hexagonal Head Bolts |
US $ 0.01-0.1 / Piece |
| Dacromet Coated Round Head Square Neck Bolts |
US $ 0.06 / Piece |
| M16X60mm Dacromet Coated Round Head Fence Bolts |
Min. Order: 10000 Pieces
|
| Hex Head Serrated Flange Bolts Dacromet Coated |
US $ 0.01-0.2 / Piece |
| Medium Carbon Steel Dacromet Coated Railway Bolts |
US $ 0.46 / Piece |
| High Strength Steel Dacromet Coated Construction Bolts |
US $ 0.25 / Piece |
| DIN7504 C1022A Pan Phs Head Dacromet Coated Hardened Self Drilling Screw |
US $ 1-2 / kg |
| A2-70 Gr8.8 9.8 10.8 Dacromet Coated ASTM A194 2h Heavy Hex Nuts |
US $ 0.01-0.51 / Piece |
| Standard | ASTM, BS, ASME, ISO, UNI, ANSI, GB, IS, DIN, JIS |
|---|---|
| Threads: | BSF, BSW, UNF, UNC, METRIC or as per need |
| Dacromet Coated Fasteners Standard | ANSI
DIN: DIN 912, DIN 603, DIN 933, DIN 6923, DIN 970, DIN 931, DIN 7981, DIN 934, DIN916, DIN 7985, DIN 7982, DIN 913, B.S. UTS : UNEF, UNS, NPTF, UNC, NPT, UNF ISO :ISO 7380, ISO 4033, ISO 4017, JIS standards, ISO 4032 |
| Dacromet Coated Fasteners/ Bolts Size | M36, M4, M10, M48, M8, M160, M12, M33, M16, (M14), M3, (M27), (M3.5), M5, M42, M2, M20, M24, (M18), M30, M6, (M22), (M45) and as per need |
| Length | 3 milimeter - 200 milimeter |
| Head drive: | Slotted, Six-Lobe, Phillips/Slot, Phillips, etc |
| Test Certificate | EN 10204 / 3.1 |
| Dacromet Coated Fasteners raw materials of Source | Usha Martin, JSPL, Mukund Steel, Tata Steel, Dhamm Steel, RINL etc. |
| Form | Square, Hex, Threading as per Gauge, Round Etc. |
| Process of Production |
|
| Dacromet Coated Fasteners other Surface Coating |
|
| Sr. No. | Size (mm) | Drill Point | Drilling Capacity (mm) | Pcs / Box | Pcs / Carton |
| 1 | 5.5 x 14 x 25 | #4 | 6 | 500 | 2000 |
| 2 | 5.5 x 14 x 35 | 400 | 1600 | ||
| 3 | 5.5 x 14 x 45 | #5 | 8 | 350 | 1400 |
| 4 | 5.5 x 14 x 55 | 250 | 1000 | ||
| 5 | 5.5 x 14 x 68 | 200 | 800 |
| Sr. No. |
Size (mm) | Drill Point | Drilling Capacity (mm) | Pcs / Box | Pcs / Carton |
| 1 | 5.5 x 24 x 25 | #4 | 6 | 500 | 4000 |
| 2 | 5.5 x 24 x 38 | 400 | 1600 | ||
| 3 | 5.5 x 24 x 55 | #5 | 8 | 250 | 1000 |
| 4 | 5.5 x 24 x 60 | 200 | 1600 | ||
| 5 | 5.5 x 24 x 65 | 200 | 800 |
| Temperatures Range | 800 F (426 C) |
| Grade | Salt Spray Test (ISO 9227) | Coating Weight | Cyclic Test |
|---|---|---|---|
| DACROMET® 320 / 500 Grade B | 240 hours without white rust 1000 hours without red rust | 36 g/m2 | |
| DACROMET® 320 / 500 Grade A | 240 hours without white rust 600 hours without red rust | 24 g/m2 | |
| DACROMET® 320 / 500 High thickness | 80 g/m2 | 15 Kesternich cycles |
| Nominal Sizes | F | G | H | ||||||
| Width Across Flats |
Width Across Corners |
Thickness | |||||||
| Basic | Minimum | Maximum | Minimum | Maximum | Basic | Maximum | Minimum | ||
| 1/4 | 0.02500 | 7/16 | 0.0428 | 0.0438 | 0.0488 | 0.0505 | 7/32 | 0.0226 | 0.0212 |
| 5/16 | 0.03125 | 1/2 | 0.0489 | 0.0500 | 0.0557 | 0.0577 | 17/64 | 0.0273 | 0.0258 |
| 7/16 | 0.04375 | 11/16 | 0.0675 | 0.0688 | 0.0768 | 0.0794 | 3/8 | 0.0385 | 0.0365 |
| 1/2 | 0.05000 | 3/4 | 0.0736 | 0.0750 | 0.0840 | 0.0866 | 7/16 | 0.0448 | 0.0427 |
| 5/8 | 0.06250 | 15/16 | 0.0922 | 0.0938 | 10.0051 | 10.0083 | 35/64 | 0.0559 | 0.0535 |
| 3/4 | 0.07500 | 1-1/8 | 10.0088 | 10.0125 | 10.0240 | 10.0299 | 41/64 | 0.0665 | 0.0617 |
| 7/8 | 0.08750 | 1-5/16 | 10.0269 | 10.0312 | 10.0447 | 10.0516 | 3/4 | 0.0776 | 0.0724 |
| 1-1/8 | 10.01250 | 1-11/16 | 10.0631 | 10.0688 | 10.0859 | 10.0949 | 31/32 | 0.0999 | 0.0939 |
| 1-3/8 | 10.03750 | 2-1/16 | 10.0994 | 20.0062 | 20.0273 | 20.0382 | 1-11/64 | 10.0206 | 10.0138 |
| 1-1/2 | 10.0500 | 2-1/4 | 20.0175 | 20.0250 | 20.0480 | 20.0598 | 1-9/32 | 10.0ASTM A194 GR0.0 8 | 10.0245 |
| 1-3/4 | 10.07500 | 2-5/8 | 20.0538 | 20.0625 | 20.0893 | 30.0031 | 1-1/2 | 10.0540 | 10.0460 |
| 2 | 20.00000 | 3 | 20.0900 | 30.0000 | 30.0306 | 30.0464 | 1-23/32 | 10.0763 | 10.0675 |
| 2-1/2 | 20.05000 | 3-3/4 | 30.0625 | 30.0750 | 40.0133 | 40.0330 | 2-5/32 | 20.0209 | 20.0105 |
| 2-3/4 | 20.07500 | 4-1/8 | 30.0988 | 40.0125 | 40.0546 | 40.0763 | 2-3/8 | 20.0431 | |
| NOMINIMAL SIZE (D) OF BOLTS | HEAD THICKNESS | BODY DIAMETER | ACROSS CORNERS | |||
|---|---|---|---|---|---|---|
| H (MAXIMUM) | H (MINIMUM) | D (MAXIMUM) | D (MINIMUM) | C (MAXIMUM) | C (MINIMUM) | |
| m12 | 7.076 | 4.024 | 12.000 | 11.073 | 20.078 | 20.003 |
| m10 | 6.063 | 6.017 | 10.000 | 9.078 | 18.048 | 17.077 |
| m16 | 10.032 | 9.068 | 16.000 | 15.073 | 27.071 | 26.075 |
| m14 | 9.009 | 8.051 | 14.000 | 13.073 | 24.025 | 23.035 |
| m30 | 19.048 | 17.092 | 30.000 | 29.067 | 53.012 | 50.085 |
| m20 | 12.088 | 12.012 | 20.000 | 19.067 | 34.064 | 32.095 |
| m48 | 31.007 | 28.093 | 48.000 | 47.038 | 86.060 | 82.076 |
| m42 | 26.097 | 25.003 | 42.000 | 41.038 | 75.006 | 71.071 |
| m80 | 51.058 | 48.042 | 80.000 | 79.026 | 132.072 | 126.054 |
| m64 | 41.032 | 38.068 | 64.000 | 63.026 | 109.070 | 104.065 |
| m100 | 63.09 | 60.010 | 90.000 | 99.013 | 167.043 | 159.060 |
Nominal |
Thread. |
Hex Socket Size |
Body diameter and Head height |
Head Dia |
Soc. length |
||
Size |
Pitch |
Max |
Min |
Max |
Min |
||
J |
D /H |
A |
K |
||||
M3 |
0.5 |
2.50 |
3.00 |
2.86 |
5.50 |
5.20 |
1.3 |
M4 |
0.70 |
3.00 |
4.00 |
3.82 |
7.00 |
6.64 |
2.00 |
M5 |
0.8 |
4.00 |
5.00 |
4.82 |
8.50 |
8.14 |
2.70 |
M6 |
1.0 |
5.00 |
6.00 |
5.82 |
10.00 |
9.64 |
3.30 |
M8 |
1.25 |
6.00 |
8.00 |
7.78 |
13.00 |
12.57 |
4.3 |
M10 |
1.5 |
8.00 |
10.00 |
9.78 |
16.00 |
15.57 |
5.50 |
M12 |
1.75 |
10.00 |
12.00 |
11.73 |
18.00 |
17.57 |
6.60 |
M16 |
2.0 |
14.00 |
16.00 |
15.73 |
24.00 |
23.48 |
8.80 |
M20 |
2.5 |
17.00 |
20.00 |
19.67 |
30.00 |
29.48 |
10.70 |
M24 |
3.0 |
19.00 |
24.00 |
23.67 |
36.00 |
35.38 |
12.90 |
| WEIGHTS MACHINE SCREWS & Type 1, 23, F and G TAPPING SCREWS LBS. Per 1000 pieces |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
DIAMETERS |
|||||||||||
LENGTHS |
#2 |
#3 |
#4 |
#5 |
#6 |
#8 |
#10 |
#12 |
1/4″ |
5/16″ |
3/8″ |
1/8 |
0.40 |
0.55 |
0.70 |
1.1 |
1.4 |
— |
— |
— |
— |
— |
— |
3/16 |
0.50 |
0.70 |
0.90 |
1.2 |
1.5 |
2.5 |
3.9 |
— |
— |
— |
— |
1/4 |
0.60 |
0.80 |
1.00 |
1.4 |
1.7 |
2.8 |
4.3 |
5.6 |
8.5 |
— |
— |
5/16 |
0.60 |
0.90 |
1.20 |
1.5 |
1.9 |
3.1 |
4.6 |
6.1 |
9.1 |
16.7 |
— |
3/8 |
0.70 |
0.90 |
1.30 |
1.7 |
2.1 |
3.4 |
5.0 |
6.5 |
9.8 |
17.7 |
29.2 |
7/16 |
0.80 |
1.00 |
1.50 |
1.9 |
2.2 |
3.6 |
5.4 |
6.9 |
10.4 |
18.8 |
30.7 |
1/2 |
0.80 |
1.10 |
1.60 |
2.0 |
2.4 |
3.9 |
5.8 |
7.4 |
11.1 |
19.8 |
32.2 |
9/16 |
0.90 |
1.20 |
1.70 |
2.2 |
2.6 |
4.2 |
6.2 |
7.8 |
11.7 |
20.9 |
33.6 |
5/8 |
1.00 |
1.30 |
1.80 |
2.3 |
2.8 |
4.5 |
6.6 |
8.3 |
12.4 |
21.9 |
35.1 |
3/4 |
1.10 |
1.50 |
2.10 |
2.6 |
3.2 |
5.0 |
7.3 |
9.2 |
13.6 |
24.0 |
38.0 |
7/8 |
1.30 |
1.70 |
2.30 |
3.0 |
3.5 |
5.6 |
8.1 |
10.1 |
14.9 |
26.1 |
41.0 |
1″ |
1.40 |
1.90 |
2.50 |
3.4 |
3.9 |
6.2 |
8.9 |
11.0 |
16.1 |
28.8 |
44.0 |
1-1/8″ |
1.50 |
2.00 |
2.80 |
3.8 |
4.3 |
6.7 |
9.6 |
11.9 |
17.4 |
30.2 |
47.0 |
1-1/4″ |
1.60 |
2.20 |
3.00 |
4.1 |
4.6 |
7.3 |
10.4 |
12.8 |
18.7 |
32.3 |
49.8 |
1-1/2″ |
1.80 |
2.50 |
3.50 |
4.7 |
5.3 |
8.3 |
11.9 |
14.7 |
21.2 |
36.5 |
55.8 |
1-3/4″ |
2.10 |
2.90 |
4.00 |
5.3 |
6.1 |
9.4 |
13.5 |
16.5 |
23.7 |
40.7 |
61.7 |
2″ |
2.40 |
3.30 |
4.50 |
6.0 |
6.8 |
10.6 |
15.0 |
18.3 |
26.2 |
44.8 |
67.6 |
2-1/4″ |
2.60 |
3.60 |
5.00 |
6.7 |
7.6 |
11.8 |
16.6 |
20.1 |
28.8 |
19.0 |
73.5 |
2-1/2″ |
2.80 |
3.90 |
5.50 |
7.3 |
8.3 |
12.9 |
18.1 |
22.0 |
31.3 |
53.2 |
79.5 |
2-3/4″ |
3.10 |
4.30 |
6.00 |
7.9 |
9.1 |
13.9 |
19.7 |
23.8 |
33.9 |
57.3 |
85.3 |
3″ |
3.40 |
4.70 |
6.50 |
8.6 |
9.8 |
15.0 |
21.2 |
25.6 |
36.4 |
61.5 |
91.3 |
* Weights above are approximate and are based on pan head machine screws |
|||||||||||
Coated Nut Size (milimeter) |
Diameter* (milimeter) |
Height (mm) |
||
|---|---|---|---|---|
Jam Nut |
Hex Nut |
Nylock Nut |
||
2 |
4 |
1.02 |
1.06 |
- |
2.05 |
5 |
1.06 |
2 |
- |
3 |
5.05 |
1.08 |
2.04 |
4 |
4 |
7 |
2.02 |
3.02 |
5 |
5 |
8 |
2.07 |
4 |
5 |
6 |
10 |
3.02 |
5 |
6 |
7 |
11 |
3.05 |
5.05 |
- |
8 |
13 |
4 |
6.05 |
8 |
10 |
17 |
5 |
8 |
10 |
12 |
19 |
6 |
10 |
12 |
14 |
22 |
7 |
11 |
14 |
16 |
24 |
8 |
13 |
16 |
18 |
27 |
9 |
15 |
18.05 |
20 |
30 |
10 |
16 |
20 |
| Class 150 Flanges ASME B16.5 (Stud Bolts sizes) | Length of Coated Stud Bolts | |||||||
| NPS | The diameter of Dacromet Coated Bolts Circle | Outside Diameter of Flange | Diameter of Dacromet Coated Bolts | Ring Joint | Raised Face 0.06 in |
|||
| 1/2 | 2 3/8 | 3 1/2 | 1/2 | – | 2 1/4 | |||
| 3/4 | 2 3/4 | 3 7/8 | 1/2 | – | 2 1/2 | |||
| 1 | 3 1/8 | 4 1/4 | 1/2 | 3 | 2 1/2 | |||
| 1 1/4 | 3 1/2 | 4 5/8 | 1/2 | 3 1/4 | 2 3/4 | |||
| 1 1/2 | 3 7/8 | 5 | 1/2 | 3 1/4 | 2 3/4 | |||
| 2 | 4 3/4 | 6 | 5/8 | 3 3/4 | 3 1/4 | |||
| 2 1/2 | 5 1/2 | 7 | 5/8 | 4 | 3 1/2 | |||
| 3 | 6 | 7 1/2 | 5/8 | 4 | 3 1/2 | |||
| 3 1/2 | 7 | 8 1/2 | 5/8 | 4 | 3 1/2 | |||
| 4 | 7 1/2 | 9 | 5/8 | 4 | 3 1/2 | |||
| 5 | 8 1/2 | 10 | 3/4 | 4 1/4 | 3 3/4 | |||
| 6 | 9 1/2 | 11 | 3/4 | 4 1/2 | 4 | |||
| 8 | 11 3/4 | 13 1/2 | 3/4 | 4 3/4 | 4 1/4 | |||
| 10 | 14 3/4 | 16 | 7/8 | 5 | 4 1/2 | |||
| 12 | 17 | 19 | 7/8 | 5 1/4 | 4 3/4 | |||
| 14 | 18 3/4 | 21 | 1 | 5 3/4 | 5 1/4 | |||
| 16 | 21 1/4 | 23 1/2 | 1 | 5 3/4 | 5 1/4 | |||
| 18 | 22 3/4 | 25 | 1 1/8 | 6 1/4 | 5 3/4 | |||
| 20 | 25 | 27 1/2 | 1 1/8 | 6 3/4 | 6 1/4 | |||
| 24 | 29 1/2 | 32 | 1 1/4 | 7 1/4 | 6 3/4 | |||
| Class 300 Flanges ASME B16.5 | Length of Stud Bolts | |||||||
| NPS | The diameter of Dacromet Coated Bolts Circle | Outside Diameter of Flange | Diameter of Coated Bolts | The diameter of Dacromet Coated Bolts Holes | Ring Joint | |||
| 1/2 | 2 5/8 | 3 3/4 | 1/2 | 5/8 | 3 | |||
| 3/4 | 3 1/4 | 4 5/8 | 5/8 | 3/4 | 3 1/2 | |||
| 1 | 3 1/2 | 4 7/8 | 5/8 | 3/4 | 3 1/2 | |||
| 1 1/4 | 3 7/8 | 5 1/4 | 5/8 | 3/4 | 3 3/4 | |||
| 1 1/2 | 4 1/2 | 6 1/8 | 3/4 | 7/8 | 4 | |||
| 2 | 5 | 6 1/2 | 5/8 | 3/4 | 4 | |||
| 2 1/2 | 5 7/8 | 7 1/2 | 3/4 | 7/8 | 4 1/2 | |||
| 3 | 6 5/8 | 8 1/4 | 3/4 | 7/8 | 4 3/4 | |||
| 3 1/2 | 7 1/4 | 9 | 3/4 | 7/8 | 5 | |||
| 4 | 7 7/8 | 10 | 3/4 | 7/8 | 5 | |||
| 5 | 9 1/4 | 11 | 3/4 | 7/8 | 5 1/4 | |||
| 6 | 10 5/8 | 12 1/2 | 3/4 | 7/8 | 5 1/2 | |||
| 8 | 13 | 15 | 7/8 | 1 | 6 | |||
| 10 | 15 1/4 | 17 1/2 | 1 | 1 1/8 | 6 3/4 | |||
| 12 | 17 3/4 | 20 1/2 | 1 1/8 | 1 1/4 | 7 1/4 | |||
| 14 | 20 1/4 | 23 | 1 1/8 | 1 1/4 | 7 1/2 | |||
| 16 | 22 1/2 | 25 1/2 | 1 1/4 | 1 3/8 | 8 | |||
| 18 | 24 3/4 | 28 | 1 1/4 | 1 3/8 | 8 1/4 | |||
| 20 | 27 | 30 1/2 | 1 1/4 | 1 3/8 | 8 3/4 | |||
| 24 | 32 | 36 | 1 1/2 | 1 5/8 | 10 | |||
| Philippines, Indonesia, Belgium, Dammam -KSA | M6 M8 M10 M22 Dacromet Coated Screw Pipe U-Bolts and Nut |
| Europe, France, Thailand, Qatar | 1000 Hours Anti-Corrosion Dacromet Coated Bolts Nut |
| Thailand ,Germany, Malaysia, Czechia | Dacromet Coated Alloy Steel Hexagon Bolts |
| Bangladesh, USA, Finland, Malaysia | Dacromet Coated T Head Bolts Nut |
| Kuwait, Saudi Arabia (KSA), Brazil, South Africa | Dacromet Coated Concrete Screw |
| Singapore, South Africa, Bahrain | DIN933 DIN931 DIN960 DIN961 Dacromet Hex Bolts and Nuts |
| UK, Australia, Nigeria, Philippines | Dacromet Hex Head Self Drilling Screws |
| Hong Kong, Malaysia, UAE, Oman | Alloy Steel High Strength Dacromet Grade 12.9 Hex Bolts (M12*45) |
| Iran, Italy, Singapore, Chile | High Strength Dacromet Coated Railway Bolts/Spike Bolts |
| Norway, Turkey, Malaysia, United Arab Emirates (UAE) | Dacromet Coated Hex Flange Self Drilling Screw with Robber Washer |
| , Russia, Malaysia, Dubai, Netherlands | Dacromet Coated Chipboard Screws/Hex Head Self Drilling Screws |
| Mexico, Spain, UK, Egypt | Dacromet Coated Chipboard Screws Drywall Screw |
| Malaysia, Europe, UAE, United Kingdom -UK | Building Dacromet coated Bolts Hex Bolts/Fastener |
