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| Nominal Size | Washer Diameter | Washer Thickness | |||
|---|---|---|---|---|---|
| Internal Max – Min | External Max – Min | Thickness Max – Min | Thinness Max – Min | ||
| M3 | 3.4 – 3.2 | 7.0 – 6.7 | 0.6 – 0.4 | - | |
| M4 | 4.5 – 4.3 | 9.0 – 8.7 | 0.9 – 0.7 | - | |
| M5 | 5.5 – 5.3 | 10.0 – 9.7 | 1.1 – 0.9 | - | |
| M6 | 6.7 – 6.2 | 12.5 – 12.1 | 1.8 – 1.3 | 0.9 – 0.7 | |
| M8 | 8.7 – 8.4 | 17.0 – 16.6 | 1.8 – 1.4 | 1.1 – 0.9 | |
| M10 | 10.9 – 10.5 | 21.0 – 20.5 | 2.2 – 1.8 | 1.45 – 1.05 | |
| M12 | 13.4 – 13.0 | 24.0 – 23.5 | 2.7 – 2.3 | 1.8 – 1.4 | |
| M16 | 17.4 – 17.0 | 30.0 – 29.5 | 3.3 – 2.7 | 2.2 – 1.8 | |
| M20 | 21.5 – 21.0 | 37.0 – 36.2 | 3.3 – 2.7 | 2.2 – 1.8 | |
| M24 | 25.5 – 25.0 | 44.0 – 43.2 | 4.3 – 3.7 | 2.7 – 2.3 | |
| M30 | 31.6 – 31.0 | 56.0 – 55.0 | 4.3 – 3.7 | 2.7 – 2.3 | |
| M36 | 37.6 – 37.0 | 66.0 – 65.0 | 5.6 – 4.4 | 3.3 – 2.7 |
| Material | Standards | Grades |
|---|---|---|
| Nickel Alloy Belleville washers | ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 | UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8825 (INCONEL 825), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3) |
| Stainless Steel Washers | ASTM / ASME A/SA 193 / 194 | B 8 (304), B 8C (SS 347), B 8M (SS 316), B 8 T (SS 321), A 2, A 4 |
| Alloy Steel Belleville Washers | ASTM / ASME A/SA 193 / 194 GR | B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M |
| Duplex Steel Belleville Washers | UNS NO. S 31803, S 32205 | Range: M10 TO M100, LENGTH UPTO 5 METERS |
| Nonmetallic Materials: | Acrylic, Kel-F, Lexan, Polypropylene, Poly Vinyl Chloride, Teflon, Zytel 31, 101, 105 | |
| High-Temp Alloys | Discaloy, 19-9 DL, 16-25-6, A286, Titanium, Nimonic 80, Mulitmet, Haynes 25, Greek Ascalloy, Unitemp 252, Udimet 500, Rene 41, Inco 700, Inco 901, Hastelloy X, 235, Waspaloy, RA 330 | |
| Copper Base Alloys | Copper, Brasses: Yellow, Free-cut, Red, Naval, Bronze: Commercial, Phosphor, Silicon A & B, Aluminum, Silicon-Aluminum, Manganese, Ampco Alloys, Munitz Metal, Cupro-Nicles | |
| Aluminum Alloys: | 1100, 2011, 2014, 2017, 2024, 3003, 5052, 6053, 6061, 7075 | |
| Trademarks: | Carpenter, Armco, INCO, Cabot, DuPont. | |
| Finish: | Black Oxide, Zinc Plating, Hot Dip Galvanized |
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