ASTM A563 Grade C Heavy Hex Nuts
Dimension Standard: ASME B18.2.2
Inch Size: 1/4”-4”
Other Available Material Grade:
ASTM A563 A, B, C, D, DH and so on.
Finish: Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized, etc.
Packing: Bulk about 25 kgs each carton, 36 cartons each pallet
Advantage: High Quality, Competitive Price, Timely Delivery,Technical Support, Supply Test Reports
Please feel free to contact us for more details.
The ASTM A563 specification covers the chemical and mechanical requirements for carbon and alloy steel nuts used on bolts, studs, and externally threaded fasteners. The charts below address over tapping allowances for hot-dip galvanized nuts, grade marking requirements, and mechanical requirements.
According to the A563 specification, “The requirements for any grade of nut may, at the supplier’s option, and with notice to the purchaser, be fulfilled by furnishing nuts of one of the stronger grades specified herein unless such a substitution is barred in the inquiry and purchase order”. This is important because some nut grades are not readily available in certain sizes and finishes. Additionally, the specification allows for the substitution of ASTM A194 grade 2H nuts in lieu of A563 grade DH nuts due to the lack of availability of grade DH nuts in nominal sizes 3/4″ and larger.
Hot-dip galvanized nuts must be tapped oversize to allow for the added thickness of the zinc on the threads of the externally threaded fastener. These allowances are addressed in the chart below.
Various nut styles exist and to some degree are determined by their grade. These styles include hex, heavy hex, square, jam, coupling, and sleeve.
A | Carbon steel, hex or heavy hex |
---|---|
B | Carbon steel, hex or heavy hex |
C | Carbon steel, quenched and tempered, heavy hex |
D | Carbon steel, quenched and tempered, heavy hex |
DH | Carbon steel, quenched and tempered, heavy hex |
C3 | Weathering steel, quenched and tempered, heavy hex |
DH3 | Weathering steel, quenched and tempered, heavy hex |
Grade | Style | Size, in. | Proof Load, ksi | Hardness, HBN | |
---|---|---|---|---|---|
Plain | Galvanized | ||||
A | Hex | 1/4 - 1-1/2 | 90 | 68 | 116 - 302 |
Heavy Hex | 1/4 - 4 | 100 | 75 | 116 - 302 | |
B | Heavy Hex | 1/4 - 1 | 133 | 100 | 121 - 302 |
Heavy Hex | 1-1/8 - 1-1/2 | 116 | 87 | 121 - 302 | |
C / C3 | Heavy Hex | 1/4 - 4 | 144 | 144 | 143 - 352 |
D | Heavy Hex | 1/4 - 4 | 150 | 150 | 248 - 352 |
DH / DH3 | Heavy Hex | 1/4 - 4 | 175 | 150 | 248 - 352 |
For UNC, 8UN, 6UN, and Coarse Pitch Threads |
Element | Grades O, A, B, C | D** | DH** |
---|---|---|---|
Carbon | 0.55% max | 0.55% max | 0.20 - 0.55% |
Manganese, min | 0.30% | 0.60% | |
Phosphorus, max | 0.12% | 0.04% | 0.04% |
Sulfur, max | 0.15%* | 0.05% | 0.05% |
* For grades O, A and B a sulfur content of 0.23% max is acceptable with the purchasers approval | |||
** For grades D and DH a sulfur content of 0.05 - 0.15% is acceptable provided the manganese is 1.35% min |
Element | Classes for Grade C3* | DH3 | ||||||
---|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | N | ||
Carbon | 0.33 - 0.40% | 0.38 - 0.48% | 0.15 - 0.25% | 0.15 - 0.25% | 0.20 - 0.25% | 0.20 - 0.25% | 0.20 - 0.53% | |
Manganese | 0.90 - 1.20% | 0.70 - 0.90% | 0.80 - 1.35% | 0.40 - 1.20% | 0.60 - 1.00% | 0.90 - 1.20% | 0.40% min | |
Phosphorus | 0.040% max | 0.06 - 0.12% | 0.035% max | 0.040% max | 0.040% max | 0.040% max | 0.07 - 0.15% | 0.046% max |
Sulfur, max | 0.050% | 0.050% | 0.040% | 0.050% | 0.040% | 0.040% | 0.050% | 0.050% |
Silicon | 0.15 - 0.35% | 0.30 - 0.50% | 0.15 - 0.35% | 0.25 - 0.50% | 0.15 - 0.35% | 0.15 - 0.35% | 0.20 - 0.90% | |
Copper | 0.25 - 0.45% | 0.20 - 0.40% | 0.20 - 0.50% | 0.30 - 0.50% | 0.30 - 0.60% | 0.20 - 0.40% | 0.25 - 0.55% | 0.20% min |
Nickel | 0.25 - 0.45% | 0.50 - 0.80% | 0.25 - 0.50% | 0.50 - 0.80% | 0.30 - 0.60% | 0.20 - 0.40% | 1.00% max | 0.20% min** |
Chromium | 0.45 - 0.65% | 0.50 - 0.75% | 0.30 - 0.50% | 0.50 - 1.00% | 0.60 - 0.90% | 0.45 - 0.65% | 0.30 - 1.25% | 0.45% min |
Vanadium | 0.020% min | |||||||
Molybdenum | 0.06% max | 0.10% max | 0.15% min** | |||||
Titanium | 0.05% max | |||||||
* Selection of a class shall be at the option of the manufacturer | ||||||||
** Nickel or Molybdenum may be used. |
Grade Identification Marking | Specification | Material | Nominal Size, In. | Proof Load Stress, ksi | Hardness Rockwell | See Note | |
---|---|---|---|---|---|---|---|
Min | Max | ||||||
ASTM A563 Grade O | Carbon Steel | 1/4 - 1-1/2 | 69 | B55 | C32 | 2,3 | |
ASTM A563 Grade A | Carbon Steel | 1/4 - 1-1/2 | 90 | B68 | C32 | 2,3 | |
ASTM A563 Grade B | Carbon Steel | 1/4 - 1 | 120 | B69 | C32 | 2,3 | |
>1 - 1-1/2 | 105 | ||||||
ASTM A563 Grade C | Carbon Steel, may be Quenched and Tempered | 1/4 - 4 | 144 | B78 | C38 | 4 | |
ASTM A563 Grade C3 | Atmospheric Corrosion Resistant Steel, may be Quenched and Tempered | 1/4 - 4 | 144 | B78 | 38 | 4,6 | |
ASTM A563 Grade D | Carbon Steel, may be Quenched and Tempered | 1/4 - 4 | 150 | B84 | C38 | 5 | |
ASTM A563 Grade DH | Carbon Steel, Quenched and Tempered | 1/4 - 4 | 175 | C24 | C38 | 5 | |
ASTM A563 Grade DH3 | Atmospheric Corrosion Resistant Steel, Quenched and Tempered | 1/4 - 4 | 175 | C24 | C38 | 4,6 | |
NOTES: 1.In addition to the indicated grade marking, all grades, except A563 grades O, A, and B, must be marked for manufacturer identification. 2.Nuts are not required to be marked unless specified by the purchaser. When marked, the identification marking shall be the grade letter O, A, or B. 3.Properties shown are those of nonplated or noncoated coarse thread nuts. 4.Properties shown are those of coarse thread heavy hex nuts. 5.Properties shown are those of coarse thread heavy hex nuts. Other nuts styles and fine threads may apply. 6.The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel. Inch Fastener Standards. 7th ed. Cleveland: Industrial Fasteners Institute, 2003. n-80-n-81. |
For Nuts: Hot Dipped Galvanized per Specification F2329
Nominal Nut Size, in. and Pitch | Diametral Allowance, in. | Pitch Diameter | |
---|---|---|---|
Min | Max | ||
0.250 - 20 | 0.016 | 0.2335 | 0.2384 |
0.312 - 18 | 0.017 | 0.2934 | 0.2987 |
0.375 - 16 | 0.017 | 0.3514 | 0.3571 |
0.437 - 14 | 0.018 | 0.4091 | 0.4152 |
0.500 - 13 | 0.018 | 0.4680 | 0.4745 |
0.562 - 12 | 0.020 | 0.5284 | 0.5352 |
0.625 - 11 | 0.020 | 0.5860 | 0.5932 |
0.750 - 10 | 0.020 | 0.7050 | 0.7127 |
0.875 - 9 | 0.022 | 0.8248 | 0.8330 |
1.000 - 8 | 0.024 | 0.9428 | 0.9516 |
1.125 - 8 | 0.024 | 1.0678 | 1.0768 |
1.125 - 7 | 0.024 | 1.0562 | 1.0656 |
1.250 - 8 | 0.024 | 1.1928 | 1.2020 |
1.250 - 7 | 0.024 | 1.1812 | 1.1908 |
1.375 - 8 | 0.027 | 1.3208 | 1.3301 |
1.375 - 6 | 0.027 | 1.2937 | 1.3041 |
1.500 - 8 | 0.027 | 1.4458 | 1.4553 |
1.500 - 6 | 0.027 | 1.4187 | 1.4292 |
1.750 - 5 | 0.050 | 1.6701 | 1.6817 |
2.000 - 4.5 | 0.050 | 1.9057 | 1.9181 |
2.250 - 4.5 | 0.050 | 2.1557 | 2.1683 |
2.500 - 4 | 0.050 | 2.3876 | 2.4011 |
2.750 - 4 | 0.050 | 2.6376 | 2.6513 |
3.000 - 4 | 0.050 | 2.8876 | 2.9015 |
3.250 - 4 | 0.050 | 3.1376 | 3.1517 |
3.500 - 4 | 0.050 | 3.3876 | 3.4019 |
3.750 - 4 | 0.050 | 3.6376 | 3.6521 |
4.000 - 4 | 0.050 | 3.8876 | 3.9023 |
Inch Fastener Standards. 7th ed. Cleveland: Industrial Fasteners Institute, 2003. B-173. |
The mic of the recording camera was right below my nose, so sorry about soundling as if I were out of breath in the video. I was trying to hold the recording camera at arm’s length as I moved the pan and spinner mount in my other hand.
The coupler was not tightened down fully on the device, but it really works flawlessly as it is. I have not taken it out for a test on the nose of my sidecar, but I just finished putting the parts together on the prototype project. The aluminum bar is about 8-9″ in length and can be repositioned by adjusting the allen screw at the T-fitting and moving it. I can replace the long allen screw with a smaller thumb screw when I finish the project. There does not seem to be any need to add any camera balance weight to the opposite end of the aluminum bar on this mount. It swings freely and I believe that on the nose of my sidecar, it should work well in panning as it spins. Like I said in the video, it may require a modification added to slow down the spin, but I am not sure of that until I put it into actual use.
I added set screws to the Eye of Mine piece, so that I can change the angle of my camera at will. Before actual use, I’ll add a tether strap or some velcro straps to ensure the camera is secure to the nth degree on the mount setup. The round magnet was a 95 lb. pull one from Harbor Freight and cost maybe $10 bucks. As always, be careful with a magnet, as it can mar or scratch paint if you are not careful in the application or removal of it.
The parts are basically:
1/2″ PVC coupler.
1/2″ T-fitting, tapped for an allen head set screw or thumb screw.
9″ piece of 1/2″ aluminum tubing.
Choice of Eye of Mine camera mount or using a stock GoPro tripod mount.
Stock roller blade wheel bearing.
1/4″ bolt for attachment of assembly to magnetic base.
Round magnetic base from Harbor Freight.
Some 1/4″ nuts. I prefer nylock nuts.
* Remember, you will need to actually apply PVC pipe glue when you press the T-fitting into the coupler, once you have everything complete and ready to go. This means you are not going to be able to easily remove the T-fitting and coupler assembly from this mount in the future. Best of luck in figuring out the best method to break the system down in the future if you do use glue to make things permenant. I prefer the glue, as it is too easy to have the camera flip off if the parts are not secured properly.
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