SFA(又称KMT)系列带锁紧销的精密锁紧螺母为螺纹半角30°三点式斜角锁定，其独特的斜角设计，能同时承受径向和轴向作用力，防松效果优异。本产品适用于需要高精度、简单装配和可靠锁定的应用。M85以上规格无平行切面。
- 本体材质：DIN45、42CrMoA
- 表面处理：非工作面喷砂发黑
- 调质硬度：HRC28°~32°
- 螺纹精度：ISO-4H
- 平面偏摆：研磨0.002mm、精车0.002~0.005mm(默认)
| 零件型号 | D (mm) | h (mm) | d (mm) | d1 (mm) | g (mm) | t (mm) | B (mm) | M | 螺钉拧紧力矩 (Nm) | 轴向载荷 (kN) | 重量 (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| KMT0 SFA-M10×0.75P | 28 | 14 | 23 | 21 | 4 | 2 | 24 | M5 | 4.5 | 35 | 0.045 |
| KMT1 SFA-M12×1.0P | 30 | 14 | 25 | 23 | 4 | 2 | 27 | M5 | 4.5 | 40 | 0.05 |
| KMT2 SFA-M15×1.0P | 33 | 16 | 28 | 26 | 4 | 2 | 30 | M5 | 4.5 | 60 | 0.075 |
| KMT3 SFA-M17×1.0P | 37 | 18 | 33 | 29 | 5 | 2 | 34 | M6 | 8 | 75 | 0.1 |
| KMT4 SFA-M20×1.0P | 40 | 18 | 35 | 32 | 5 | 2 | 36 | M6 | 8 | 90 | 0.11 |
| KMT5 SFA-M25×1.5P | 44 | 20 | 39 | 36 | 5 | 2 | 41 | M6 | 8 | 130 | 0.13 |
| KMT6 SFA-M30×1.5P | 49 | 20 | 44 | 41 | 5 | 2 | 46 | M6 | 8 | 160 | 0.16 |
| KMT7 SFA-M35×1.5P | 54 | 22 | 49 | 46 | 5 | 2 | 50 | M6 | 8 | 190 | 0.19 |
| KMT8 SFA-M40×1.5P | 65 | 22 | 59 | 56 | 6 | 2.5 | 60 | M8 | 18 | 210 | 0.304 |
| KMT9 SFA-M45×1.5P | 70 | 22 | 64 | 61 | 6 | 2.5 | 65 | M8 | 18 | 240 | 0.33 |
| KMT10 SFA-M50×1.5P | 75 | 25 | 68 | 65 | 8 | 3 | 70 | M8 | 18 | 300 | 0.407 |
| KMT11 SFA-M55×2.0P | 85 | 25 | 78 | 74 | 8 | 3 | 80 | M8 | 18 | 340 | 0.543 |
| KMT12 SFA-M60×2.0P | 90 | 26 | 82 | 78 | 8 | 3.5 | 85 | M8 | 18 | 380 | 0.61 |
| KMT13 SFA-M65×2.0P | 95 | 28 | 87 | 83 | 8 | 3.5 | 90 | M8 | 18 | 460 | 0.712 |
| KMT14 SFA-M70×2.0P | 100 | 28 | 92 | 88 | 8 | 3.5 | 95 | M8 | 18 | 490 | 0.75 |
| KMT15 SFA-M75×2.0P | 105 | 28 | 97 | 93 | 8 | 3.5 | 100 | M8 | 18 | 520 | 0.706 |
| KMT16 SFA-M80×2.0P | 110 | 32 | 100 | 98 | 8 | 3.5 | 100 | M8 | 18 | 620 | 0.9 |
| KMT17 SFA-M85×2.0P | 120 | 32 | 110 | 107 | 10 | 4 | - | M10 | 35 | 650 | 1.15 |
| KMT18 SFA-M90×2.0P | 125 | 32 | 115 | 112 | 10 | 4 | - | M10 | 35 | 680 | 1.2 |
| KMT19 SFA-M95×2.0P | 130 | 32 | 120 | 117 | 10 | 4 | - | M10 | 35 | 710 | 1.25 |
| KMT20 SFA-M100×2.0P | 135 | 32 | 125 | 122 | 10 | 4 | - | M10 | 35 | 740 | 1.3 |
| KMT22 SFA-M110×2.0P | 145 | 32 | 134 | 132 | 10 | 4 | - | M10 | 35 | 800 | 1.45 |
| KMT24 SFA-M120×2.0P | 155 | 32 | 144 | 142 | 10 | 4 | - | M10 | 35 | 860 | 1.613 |
| KMT26 SFA-M130×2.0P | 165 | 32 | 154 | 152 | 12 | 5 | - | M10 | 35 | 920 | 1.7 |
| KMT28 SFA-M140×2.0P | 175 | 32 | 164 | 162 | 14 | 6 | - | M10 | 35 | 980 | 1.805 |
| KMT30 SFA-M150×2.0P | 185 | 32 | 174 | 172 | 14 | 6 | - | M10 | 35 | 1040 | 1.95 |
| KMT32 SFA-M160×3.0P | 195 | 32 | 184 | 182 | 14 | 6 | - | M10 | 35 | 1100 | 2.113 |
| KMT34 SFA-M170×3.0P | 205 | 32 | 194 | 192 | 14 | 6 | - | M10 | 35 | 1160 | 2.2 |
| KMT36 SFA-M180×3.0P | 215 | 32 | 204 | 202 | 16 | 7 | - | M10 | 35 | 1220 | 2.3 |
| KMT38 SFA-M190×3.0P | 225 | 32 | 214 | 212 | 16 | 7 | - | M10 | 35 | 1280 | 2.4 |
| KMT40 SFA-M200×3.0P | 235 | 32 | 224 | 222 | 18 | 8 | - | M10 | 35 | 1340 | 2.51 |
| KMT44 SFA-Tr220×4.0P | 265 | 36 | 254 | 256.5 | 20 | 10 | - | M10 | 35 | 1600 | 4.6 |
| KMT48 SFA-Tr240×4.0P | 290 | 38 | 279 | 281 | 20 | 10 | - | M12 | 60 | 1850 | 5.4 |
| KMT50 SFA-Tr250×4.0P | 300 | 38 | 289 | 285 | 20 | 10 | - | M12 | 60 | 2000 | 6.2 |
| KMT52 SFA-Tr260×4.0P | 310 | 38 | 299 | 301.5 | 20 | 10 | - | M12 | 60 | 2150 | 6.4 |
| KMT56 SFA-Tr280×4.0P | 330 | 40 | 319 | 315 | 24 | 12 | - | M12 | 60 | 2800 | 7.2 |
| KMT60 SFA-Tr300×4.0P | 360 | 42 | 349 | 350 | 24 | 12 | - | M12 | 60 | 3100 | 9.1 |
| KMT64 SFA-Tr320×5.0P | 390 | 45 | 379 | 379.5 | 24 | 12 | - | M12 | 60 | 3400 | 12.7 |
| KMT68 SFA-Tr340×5.0P | 410 | 48 | 399 | 399.5 | 24 | 12 | - | M12 | 60 | 3750 | 15.4 |
| KMT72 SFA-Tr360×5.0P | 430 | 50 | 419 | 419.5 | 28 | 13 | - | M12 | 60 | 4050 | 17 |
| KMT76 SFA-Tr380×5.0P | 460 | 55 | 449 | 448 | 28 | 13 | - | M12 | 60 | 4350 | 20 |
| KMT80 SFA-Tr400×5.0P | 480 | 60 | 469 | 466 | 32 | 14 | - | M12 | 60 | 4700 | 24.8 |
| KMT84 SFA-Tr420×5.0P | 500 | 65 | 489 | 488 | 32 | 14 | - | M12 | 60 | 5000 | 28.3 |
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