
304 stainless steel Enlarge and thicken flat gasket grade 4.8 hot dip galvanized flat gasket
Product Photos and Information
| Name | Flat Washers | Materials | Carbon Steel/Stainless Steel |
| Standards | DIN ISO ANC BSW JIS etc. | Strength level | 4.8 8.8 10.9 etc. |
| Size | M1.8-M40 | Surface finish | ZPBLACKHDG etc. |
| Length | 0.3-6.6 | Samples | Subject to availability and agreement |
Product Standards
| Flat Washers DIN 125 | |||||||||||||||||
| Specification | Φ1.7 | Φ1.8 | Φ2.2 | Φ2.5 | Φ2.7 | Φ2.8 | Φ3.2 | Φ3.7 | Φ4.3 | Φ5.3 | Φ6.4 | Φ7.4 | Φ8.4 | Φ10.5 | F13 | F15 | |
| M | Corresponding bolt specifications | M1.6 | M1.7 | M2 | M2.3 | M2.5 | M2.6 | M3 | M3.5 | M4 | M5 | M6 | M7 | M8 | M10 | M12 | M14 |
| d | min=nominal | 1.7 | 1.8 | 2.2 | 2.5 | 2.7 | 2.8 | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 | 7.4 | 8.4 | 10.5 | 13 | 15 |
| maximum value | 1.84 | 1.94 | 2.34 | 2.64 | 2.84 | 2.94 | 3.38 | 3.88 | 4.48 | 5.48 | 6.62 | 7.62 | 8.62 | 10.77 | 13.27 | 15.27 | |
| dc | max = nominal | 4 | 4.5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 10 | 12 | 14 | 16 | 20 | 24 | 28 |
| minimum | 3.7 | 4.2 | 4.7 | 5.7 | 5.7 | 6.64 | 6.64 | 7.64 | 8.64 | 9.64 | 11.57 | 13.57 | 15.57 | 19.48 | 23.48 | 27.48 | |
| h | Nominal | 0.3 | 0.3 | 0.3 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.8 | 1 | 1.6 | 1.6 | 1.6 | 2 | 2.5 | 2.5 |
| maximum value | 0.35 | 0.35 | 0.35 | 0.55 | 0.55 | 0.55 | 0.55 | 0.55 | 0.9 | 1.1 | 1.8 | 1.8 | 1.8 | 2.2 | 2.7 | 2.7 | |
| minimum | 0.25 | 0.25 | 0.25 | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 | 0.7 | 0.9 | 1.4 | 1.4 | 1.4 | 1.8 | 2.3 | 2.3 | |
| Thousand pieces (steel)≈kg | 0.024 | 0.031 | 0.037 | 0.092 | 0.088 | 0.127 | 0.119 | 0.155 | 0.308 | 0.443 | 1.02 | 1.39 | 1.83 | 3.57 | 6.27 | 8.62 | |
| Specification | F17 | F19 | F21 | F23 | Φ25 | F27 | F28 | F29 | F31 | F33 | F34 | F36 | F37 | F39 | Φ40 | F41 | |
| M | Corresponding bolt specifications | M16 | M18 | M20 | M22 | M24 | M26 | M27 | M28 | M30 | M32 | M33 | M35 | M36 | M38 | M39 | M40 |
| d | min=nominal | 17 | 19 | 21 | 23 | 25 | 27 | 28 | 29 | 31 | 33 | 34 | 36 | 37 | 39 | 40 | 41 |
| maximum value | 17.27 | 19.33 | 21.33 | 23.33 | 25.33 | 27.33 | 28.33 | 29.33 | 31.39 | 33.62 | 34.62 | 36.62 | 37.62 | 39.62 | 40.62 | 41.62 | |
| dc | max = nominal | 30 | 34 | 37 | 39 | 44 | 50 | 50 | 50 | 56 | 60 | 60 | 66 | 66 | 72 | 72 | 72 |
| minimum | 29.48 | 33.38 | 36.38 | 38.38 | 43.38 | 49.38 | 49.38 | 49.38 | 55.26 | 58.8 | 58.8 | 64.8 | 64.8 | 70.8 | 70.8 | 70.8 | |
| h | Nominal | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 |
| maximum value | 3.3 | 3.3 | 3.3 | 3.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 5.6 | 5.6 | 5.6 | 5.6 | 6.6 | 6.6 | 6.6 | |
| minimum | 2.7 | 2.7 | 2.7 | 2.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 4.4 | 4.4 | 4.4 | 4.4 | 5.4 | 5.4 | 5.4 | |
| Thousand pieces (steel)≈kg | 11.3 | 14.7 | 17.2 | 18.3 | 32.3 | 43.7 | 42.3 | 40.9 | 53.6 | 77.4 | 75.3 | 94.3 | 92.1 | 136 | 133 | 130 | |
| Specification | F43 | F46 | Φ50 | F52 | F54 | F57 | F58 | Φ60 | F62 | F66 | Φ70 | F74 | F78 | F82 | F87 | F93 | |
| M | Corresponding bolt specifications | M42 | M45 | M48 | M50 | M52 | M55 | M56 | M58 | M60 | M64 | M68 | M72 | M76 | M80 | M85 | M90 |
| d | min=nominal | 43 | 46 | 50 | 52 | 54 | 57 | 58 | 60 | 62 | 66 | 70 | 74 | 78 | 82 | 87 | 93 |
| maximum value | 43.62 | 46.62 | 50.62 | 52.74 | 54.74 | 57.74 | 58.74 | 60.74 | 62.74 | 66.74 | 70.74 | 74.74 | 78.74 | 82.87 | 87.87 | 93.87 | |
| dc | max = nominal | 78 | 85 | 92 | 92 | 98 | 105 | 105 | 110 | 110 | 115 | 120 | 125 | 135 | 140 | 145 | 160 |
| minimum | 76.8 | 83.6 | 90.6 | 90.6 | 96.6 | 103.6 | 103.6 | 108.6 | 108.6 | 113.6 | 118.6 | 123.4 | 133.4 | 138.4 | 143.4 | 158.4 | |
| h | Nominal | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 12 | 12 | 12 |
| maximum value | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 13.2 | 13.2 | 13.2 | |
| minimum | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10.8 | 10.8 | 10.8 | |
| Thousand pieces (steel)≈kg | 183 | 220 | 294 | 284 | 330 | 431 | 425 | 472 | 458 | 492 | 586 | 626 | 749 | 953 | 996 | 1250 | |
| Specification | F98 | F104 | F109 | F114 | F119 | F124 | F129 | F134 | F139 | F144 | F149 | Φ155 | Φ165 | ||||
| M | Corresponding bolt specifications | M95 | M100 | M105 | M110 | M115 | M120 | M125 | M130 | M135 | M140 | M145 | M150 | M160 | |||
| d | min=nominal | 98 | 104 | 109 | 114 | 119 | 124 | 129 | 134 | 139 | 144 | 149 | 155 | 165 | |||
| maximum value | 98.87 | 104.87 | 109.87 | 114.87 | 119.87 | 125 | 130 | 135 | 140 | 145 | 150 | 156 | 166 | ||||
| dc | max = nominal | 165 | 175 | 180 | 185 | 200 | 210 | 220 | 220 | 230 | 240 | 250 | 250 | 250 | |||
| min | 163.4 | 173.4 | 178.4 | 183.15 | 198.15* | 208.15 | 218.15 | 218.15 | 228.15 | 238.15 | 248.15 | 248.15 | 248.15 | ||||
| h | Nominal | 12 | 14 | 14 | 14 | 14 | 16 | 16 | 16 | 16 | 18 | 18 | 18 | 18 | |||
| maximum | 13.2 | 15.2 | 15.2 | 15.2 | 15.2 | 17.2 | 17.2 | 17.2 | 17.2 | 19.2 | 19.2 | 19.2 | 19.2 | ||||
| min | 10.8 | 12.8 | 12.8 | 12.8 | 12.8 | 14.8 | 14.8 | 14.8 | 14.8 | 16.8 | 16.8 | 16.8 | 16.8 | ||||
| Thousand pieces (steel)≈kg | 1300 | 1710 | 1770 | 1830 | 2230 | 2830 | 3130 | 3000 | 3310 | 4090 | 4470 | 4270 | 3910 | ||||
About Us
YONGYI Fasteners supports industrial and project fastener inquiries from Yongnian, Handan, China.
Our published company certificates, factory photographs, production information and selected supply references help buyers evaluate manufacturing and quality-control capabilities.
For a quotation, provide the product standard or drawing, size, material or grade, surface finish, quantity, packing requirement and destination.
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ISO 9001 Quality Management System Certificate (Chinese)

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