Jiaxing City Qunbang Hardware Co., Ltd
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SS304 316 DIN928 Grade A4-70 Stainless Steel Nut
Specification
DIN 928 - SQUARE WELD NUTS
Legend:
s - size square
m - height of the nut
d - the nominal diameter of the thread
Makings:QBH
Stainless:A2,A4
Plastic:-
Non Ferrous: -
Thread: 6G
Notes:
Table according to DIN 928:
dimensions in mm
| THREAD D1 | B | D2 | D3 | D4 | E | H1 | H2 | M | S | WEIGHT (7,85KG/DM3) KG/1000PCS | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tolerance | H113 | max. | min. | min. | ±0,1 | min. | max | h14 | h14 | |||||
| M4 | - | - | 0,8 | ±0,15 | 5 | 4,2 | 6,4 | 9 | 0,6 | 0,4 | 1,3 | 3,5 | 7 | 0,81 |
| M5 | - | - | 1 | 6 | 5,25 | 8,2 | 12 | 0,8 | 0,6 | 1,5 | 4,2 | 9 | 1,7 | |
| M6 | - | - | 1,2 | 7,5 | 6,3 | 9,1 | 13 | 0,8 | 0,7 | 1,8 | 5 | 10 | 2,4 | |
| M8 | M8x1 | - | 1,5 | 10 | 8,4 | 12,8 | 18 | 1 | 1,1 | 2 | 6,5 | 14 | 6,5 | |
| M10 | M10x1,25 | M10x1 | 1,8 | ±0,2 | 12,5 | 10,5 | 15,6 | 22 | 1,2 | 1,25 | 2,2 | 8 | 17 | 11,3 |
| - | - | 7/16-20 UNF-2B | 1,8 | 12,5 | 11,7 | 15,6 | 22 | 1,2 | 1,25 | 2,2 | 9 | 17 | 12,5 | |
| - | - | 7/16-20 UNF-2B | 2 | 13,5 | 11,7 | 17,4 | 25 | 1,4 | 1,75 | 3 | 9 | 19 | 16,5 | |
| M12 | M12x1,25 | M12x1,5 | 2 | 13,5 | 12,6 | 17,4 | 25 | 1,4 | 1,75 | 3 | 9,5 | 19 | 16,6 | |
| (M14) | (M14x1,5) | - | 2,5 | 16,8 | 14,7 | 20,4 | 28 | 1,4 | 1,75 | 3,2 | 11,4 | 22 | 26,7 | |
| (M16) | (M16x1,5) | - | 2,5 | 18,8 | 16,8 | 22,4 | 32 | 1,6 | 2 | 4 | 13 | 24 | ||
Product application
Square weld nuts from QBH Fasteners have four small projections in their back ends to facilitate their welding on to the surface of other metals. The most significant advantage of using these nuts is that they can be welded into even imperfect and irregular surfaces without losing their balance. They come with a pilot hole using which fasteners can be inserted. The pilot hole is used for precision feeding of fasteners, allowing them to be inserted quickly and accurately on the metal. These nuts are used in automobile and other industrial applications. The projections allow for precision seating of the fastener as well.
In addition to possessing very high shear strength, they can also be used in applications which need to resist extremely high torque. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant.
Process flow
Cold forging
Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ tapping ➨make heat treatment(if need) ➨ Finish ➨ Packing
Product Grade
304 Grade A2-70 A2-80 316 Grade A4-70 A4-80
Materials and Chemical compstition
| CHEMICAL COMPOSI(% ) | |||||||||
| Type | C | Si | Mn | P | S | Ni | Cr | Mo | Cu |
| ≤ | ≤ | ≤ | ≤ | ≤ | ≥ | ≥ | ≥ | ≈ | |
| 201Cu | 0.08 | 1.00 | 7.5-10 | 0.06 | 0.03 | 4.00-6.00 | 14.0-17.0 | 2.0-3.0 | |
| 201 | 0.15 | 1.00 | 8.50 | 0.06 | 0.03 | 3.50-5.50 | 16.0-18.0 | ||
| 202 | 0.15 | 1.00 | 7.5-10 | 0.06 | 0.03 | 4.00-6.00 | 17.0-19.0 | ||
| 301 | 0.15 | 1.00 | 2.00 | 0.045 | 0.03 | 5.00-8.00 | 16.0-18.0 | ||
| 302 | 0.15 | 1.00 | 2.00 | 0.045 | 0.03 | 8.00-10.0 | 17.0-19.0 | ||
| XM7 (302HQ) | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 8.50-10.5 | 17.0-9.00 | 3.0-4.0 | |
| 303 | 0.15 | 1.00 | 2.00 | 0.20 | ≥0.15 | 8.00-10.0 | 17.0-19.0 | ≤0.60 | |
| 304 | 0.07 | 1.00 | 2.00 | 0.035 | 0.03 | 8.00-10.0 | 18.0-20.0 | ||
| 304HC | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 8.00-10.0 | 17.0-19.0 | 1.0-3.0 | |
| 304M | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 8.50-10.0 | 18.0-20.0 | ||
| 316 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | |
| 316L (12Ni) | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 12.0-15.0 | 16.0-18.0 | 2.0-3.0 | |
| 316L (10Ni) | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | |
| 321 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 9.00-13.0 | 17.0-19.0 | Ti≤5*C% | |
| 2520 | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 19.0-22.0 | 24.0-26.0 | ||
PACKING
QBH BULK
20-25KG/CTN,36CTNS/PALLET
20-30KG/BAGS,36BAGS/PALLET
ONE TON/BOXES
50KG/ IRON DRUM,12 IRON DRUMS/PALLET
QBH SMALL PACKING
Packing in small boxes according to customer’s requirements
Packing in plastic bag according to customer’s requirements
QBH PALLET TYPE
SOLID WOOD FUMIGATION PALLET
EURO Pallet
THREE SPLINT PALLET
WOODEN BOX
The advantages of QBH