Xem Studiomeasured geometryLibrary › Hardware › Imperial machine screws: #4-40, #6-32, #8-32, 1/4-20
#4-40 SHCS × 3/4 in (19.05 mm), head Ø4.648 × 2.845, thread as Ø2.845 plain cylinder
#4-40 SHCS × 3/4 in (19.05 mm), head Ø4.648 × 2.845, thread as Ø2.845 plain cylinder
Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.
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Dimensions
| size | #4-40 |
|---|---|
| major_mm | 2.845 |
| tpi | 40 |
| clearance_mm | 3.3 |
| tap_drill_mm | 2.26 |
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Imperial machine screws: #4-40, #6-32, #8-32, 1/4-20: every size, notes, mating features and sources. What are the clearance and tap drill sizes for #4-40, #6-32, #8-32 and 1/4-20?
Other sizes
- #4-40 SHCS × 1/4 in (6.35 mm), head Ø4.648 × 2.845, thread as Ø2.845 plain cylinder
- #4-40 SHCS × 3/8 in (9.525 mm), head Ø4.648 × 2.845, thread as Ø2.845 plain cylinder
- #4-40 SHCS × 1/2 in (12.7 mm), head Ø4.648 × 2.845, thread as Ø2.845 plain cylinder
- #6-32 SHCS × 1/4 in (6.35 mm), head Ø5.74 × 3.505, thread as Ø3.505 plain cylinder
- #6-32 SHCS × 3/8 in (9.525 mm), head Ø5.74 × 3.505, thread as Ø3.505 plain cylinder
- #6-32 SHCS × 1/2 in (12.7 mm), head Ø5.74 × 3.505, thread as Ø3.505 plain cylinder
- #6-32 SHCS × 3/4 in (19.05 mm), head Ø5.74 × 3.505, thread as Ø3.505 plain cylinder
- #6-32 SHCS × 1 in (25.4 mm), head Ø5.74 × 3.505, thread as Ø3.505 plain cylinder
- #8-32 SHCS × 3/8 in (9.525 mm), head Ø6.858 × 4.166, thread as Ø4.166 plain cylinder
- #8-32 SHCS × 1/2 in (12.7 mm), head Ø6.858 × 4.166, thread as Ø4.166 plain cylinder
- #8-32 SHCS × 3/4 in (19.05 mm), head Ø6.858 × 4.166, thread as Ø4.166 plain cylinder
- #8-32 SHCS × 1 in (25.4 mm), head Ø6.858 × 4.166, thread as Ø4.166 plain cylinder
- 1/4-20 SHCS × 1/2 in (12.7 mm), head Ø9.525 × 6.35, thread as Ø6.35 plain cylinder
- 1/4-20 SHCS × 3/4 in (19.05 mm), head Ø9.525 × 6.35, thread as Ø6.35 plain cylinder
- 1/4-20 SHCS × 1 in (25.4 mm), head Ø9.525 × 6.35, thread as Ø6.35 plain cylinder
- 1/4-20 SHCS × 1-1/4 in (31.75 mm), head Ø9.525 × 6.35, thread as Ø6.35 plain cylinder
- 1/4-20 SHCS × 1-1/2 in (38.1 mm), head Ø9.525 × 6.35, thread as Ø6.35 plain cylinder