Home > Grade 12.9 Fastener
Grade 12.9 bolts are well-suited for demanding applications that call for outstanding tensile strength. With a tensile strength of 1220 MPa, they deliver the matchless structural integrity needed in aerospace and heavy machinery. That said, requiring adherence to technical standards and regulations guarantees fitness for particular applications and, therefore, safety and conformity with industry demands.
| Carbon Steel 12.9 | C | P | S | B |
|---|---|---|---|---|
| 0.28-0.5 | 0.025 | 0.025 | 0.003 |
| Nominal thread diameter | Proof strength | Yield strength | Tensile strength | Hardness |
|---|---|---|---|---|
| 1.6 To 100 | 970 | 1100 | 1220 | C39 To 44 |
At Koasteel, we’re proud to be the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every piping requirement you may have. With modern manufacturing facilities strategically positioned across the New Zealand, we maintain an extensive stock of more than 25,000 tons of top-grade materials available on hand.
| M 4 | M 5 | M 6 | M 8 | M 10 | M 12 | M 14 | M 16 | M 18 | M 20 | M 22 | M 24 | M 27 | M 30 | M 33 | M 36 | M 39 | M 42 | M 45 | M 48 | M 52 |
| 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | ||||||||
| 6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 | |||||||||
| 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
| 40 | 50 | 60 | 80 | 100 | 120 | 140 | 150 | |||||||||||||
| 6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 |
| 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.36 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 | |||||||||
| 0.125 | 0.15 | 0.18 | 0.215 | |||||||||||||||||
| 0.2 | 0.24 | 0.29 | 0.35 | 0.42 | 0.5 | |||||||||||||||
| 2.8 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 11.5 | 12.5 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 |
| 7.5 | 8.63 | 10.89 | 14.2 | 17.59 | 19.85 | 22.78 | 26.17 | 29.56 | 32.95 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 |
| 20 | 22 | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 108 | 116 |
| 14 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 | 60 | 66 | |||||||
| 33 | 35 | 37 | 41 | 45 | 49 | 53 | 57 | 61 | 65 | 69 | 73 | 79 | 85 | 91 | 97 | 103 | 109 | 115 | 121 | 129 |
| 3.978 | 4.976 | 5.974 | 7.972 | 9.968 | 11.966 | 13.962 | 15.962 | 17.958 | 19.958 | 21.958 | 23.952 | 26.952 | 29.947 | 32.947 | 35.94 | 38.94 | 41.937 | 44.937 | 47.929 | 51.929 |
| 3.838 | 4.826 | 5.794 | 7.76 | 9.732 | 11.701 | 13.682 | 15.682 | 17.623 | 19.623 | 21.623 | 23.577 | 26.577 | 29.522 | 32.522 | 35.465 | 38.465 | 41.437 | 44.437 | 47.399 | 51.399 |
Reach out to us for a fast quote tailored to your requirement.
We supply these Grade 12.9 Bolts conforming to DIN, ISO, JIS or ANSI Standard.
| Grade 12.9 Bolts Grades | DIN 933 Grade 12.9 |
| Grade 12.9 Studs Standard | ASTM F568, ASME SF568 |
| Grade 12.9 Threaded Rod Size | Dia 1.6mm to 100 mm Inch 3/4“ to 3.1/2“ |
| Grade 12.9 Set Screws finish | Zinc plated / Plain / Hot dip galvanised |
Grade 12.9 bolts serve applications as varied as the industries they support, led mainly by the aerospace, railway, construction and automotive industries along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Yes, grade 12.9 bolts are reusable following use. Steel, including grades with tensile strengths like grade 12.9, is generally reclaimed through recycling. After being discarded from their initial application, these screws can be scraped and reprocessed into new metal goods, cutting down the amount of raw materials required to produce steel and lessening the environmental burden on Recycling Grade 12.9 bolts support sustainable practices and conservation across industries.
Email: sales@koasteel.nz
