
size is oversized.
| Brass | Brass castings | Aluminum alloy castings | Magnesium alloy die castings | Zinc alloy castings | |
| 10黄銅 | 黄銅鋳物10 | アルミ合金鋳物10 | マグネシウム合金鋳物10 | 亜鉛合金鋳物10 | |
| (m/min) | (m/min) | ( m/ min) | (m/min) | (m/min) |
TYPE:1
Segment:1A
| Size | Code | Chamfer | L | ℓ | ℓn | ℓs | Ds | K | ℓk | No. of | TYPE | MSRP | ||||
| (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | flutes | |||||||||
| For Tripod Threads | ||||||||||||||||
| 1/4-20 | TYU04N0KEB3 | 3P | 62 | 15 | 26 | 33 | 6 | 4.5 | 7 | 3 | 1 | ¥ 1,480 ※ | ||||
| 1/4-20 | TYU04N0KEBA | 1.5P | 62 | 15 | 26 | 33 | 6 | 4.5 | 7 | 3 | 1 | ¥ 1,480 ※ |
Specifications of threads for mounting a camera on a tripod as shown in the picture on the right. The tripod thread is larger by about 0.14 mm than the unified thread in terms of the pitch diameter tolerance of internal
threads, while their thread shapes are the same.
■Comparison between tripod thread and unified thread unit: mm
Pitch Minor Diameter Pitch Diameter Minor Diameter
Size ) ( )
| (P) | (D) | (D | D | |
| 2 | 1 | |||
| Basic size | 6.350 | 5.525 | 4.975 | |
| Tripod thread | ||||
| 1.270 Maximum allowable size | ~ | 5.820 | 5.267 | |
| 1/4-20 | ||||
| Minimum allowable size | 6.460 | 5.635 | 4.975 | |
| Basic size | 6.350 | 5.524 | 4.976 | |
| Unified thread 2B | ||||
| 1.270 Maximum allowable size | ~ | 5.648 | 5.257 | |
| 1/4-20UNC | ||||
| Minimum allowable size | ~ | 5.525 | 4.979 | |
| ■ for Tripod Threads | ■ Bored hole size | |||
| unit: mm unit: mm | ||||
| Major | Pitch Diameter | Minor diameter of internal thread (D ) Bored hole size Minor | ||
| Diameter | 1 Size Diameter |
Max. Min. (reference)
Size Class Upper Lower
| Basic | Basic | Tolerance | Tolerance | Basic | 1/4 | - 20 | 5.267 | 4.975 | 5.19 |
| Size | Size | ( μ m) | ( μ m) | Size |
1/4 - 20 - 6.350 5.525 230 210 4.975