
Screw adapters from LBTEK are manufactured from 303 stainless steel. The female-to-male adapters connect M2 screws (M3 or M4 screws) to M3, M4 screws (M6 screws), allowing adjustment and securing via slotted driver during installation.

Converting M2, M3, or M4 female to M3, M4, M6 male;
Product Model | Type | Quantity | Unit Price | Compare | Lead Time | ||
|---|---|---|---|---|---|---|---|
| TAS1-M2M3 | Converting M2 female to M3 male | 1 | $1.96 | today | Add Cart | ||
| TAS1-M2M4 | Converting M2 Female to M4 Male | 1 | $1.96 | today | Add Cart | ||
| TAS1-M2M3-P5 | Converting M2 Female to M3 Male; | 5 pieces per package | $8.76 | today | Add Cart | ||
| TAS1-M2M4-P5 | Converting M2 Female to M4 Male | 5 pieces per package | $8.76 | today | Add Cart | ||
| TAS3-M3M4 | Converting M4 female to M3 male bolt | 1 | $2.61 | today | Add Cart | ||
| TAS1-M4M6-P5 | Converting M4 female to M6 male | 5 pieces per package | $8.76 | today | Add Cart | ||
| TAS1-M4M6 | Converting M4 female to M6 male | 1 | $2.22 | today | Add Cart | ||
| TAS1-M3M6-P5 | Converting M3 female to M6 male | 5 pieces per package | $8.76 | today | Add Cart | ||
| TAS1-M3M6 | Converting M3 female to M6 male | 1 | $2.22 | today | Add Cart | ||
| TAS3-M3M4-P5 | Converting M4 female to M3 male bolt | 5 pieces per package | $11.64 | today | Add Cart | ||
| TAS3-M3M6 | Converting M6 female to M3 male bolt | 1 | $2.88 | today | Add Cart | ||
| TAS3-M3M6-P5 | Converting M6 female to M3 male bolt | 5 pieces per package | $11.64 | today | Add Cart | ||
| TAS3-M4M6 | Converting M6 female to M4 male bolt | 1 | $2.88 | today | Add Cart | ||
| TAS3-M4M6-P5 | Converting M6 female to M4 male bolt | 5 pieces per package | $11.64 | today | Add Cart | ||
| TAS3-E25E8 | Converting 8-32 female to 1/4"-20 male bolt | 1 | $3.92 | today | Add Cart | ||
| TAS3-E25E8-P5 | Converting 8-32 female to 1/4"-20 male bolt | 1 pack of 5 | $18.30 | today | Add Cart | ||
| TAS3-E25M4 | Converting M4 female to 1/4"-20 male bolt | 1 | $3.92 | today | Add Cart | ||
| TAS3-E25M4-P5 | Converting M4 female to 1/4"-20 male bolt | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-E25M6 | Converting M6 female to 1/4"-20 male bolt | 1 | $3.92 | today | Add Cart | ||
| TAS3-E25M6-P5 | Converting M6 female to 1/4"-20 male bolt | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-E8E25 | Converting 1/4"-20 female to 8-32 male bolt | 1 | $4.05 | today | Add Cart | ||
| TAS3-E8E25-P5 | Converting 1/4"-20 female to 8-32 male bolt | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-E8M4 | Converting M4 female to 8-32 male bolt | 1 | $3.92 | today | Add Cart | ||
| TAS3-E8M4-P5 | Converting M4 female to 8-32 male bolt | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-E8M6 | Converting M6 female to 8-32 male bolt | 1 | $4.05 | today | Add Cart | ||
| TAS3-E8M6-P5 | Converting M6 female to 8-32 male bolt | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-M4E25 | Converting 1/4"-20 female to M4 male bolt | 1 | $4.05 | today | Add Cart | ||
| TAS3-M4E25-P5 | Converting 1/4"-20 female to M4 male bolt | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-M4E8 | Converting 8-32 female to M4 male bolt | 1 | $3.92 | today | Add Cart | ||
| TAS3-M4E8-P5 | Converting 8-32 female to M4 male bolt | 5 pieces per package | $18.30 | 4 weeks | Add Cart | ||
| TAS3-M4M3 | Converting M3 female to M4 male bolt | 1 | $3.14 | today | Add Cart | ||
| TAS3-M4M3-P5 | Converting M3 female to M4 male bolt | 5 pieces per package | $14.77 | today | Add Cart | ||
| TAS3-M6E25 | Converting 1/4"-20 Female to M6 Male Bolt | 1 | $3.92 | today | Add Cart | ||
| TAS3-M6E25-P5 | Converting 1/4"-20 Female to M6 Male | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-M6E8 | Converting 8-32 Female to M6 Male | 1 | $3.92 | today | Add Cart | ||
| TAS3-M6E8-P5 | Converting 8-32 Female to M6 Male | 5 pieces per package | $18.30 | today | Add Cart | ||
| TAS3-M6M4 | Converting M4 Female to M6 Male | 1 | $3.14 | today | Add Cart | ||
| TAS3-M6M4-P5 | Converting M6 Male to M4 female | 5 pieces per package | $14.77 | today | Add Cart |

Screw adapters from LBTEK are manufactured from 303 stainless steel. The male-to-male adapters connect M3 tapped holes (M5 or M6 tapped holes) to M4 tapped holes, allowing adjustment and securing via slotted driver during installation.

One end with M4 male, the other end with M3, M5 or M6 male.
Product Model | Type | Quantity | Unit Price | Compare | Lead Time | ||
|---|---|---|---|---|---|---|---|
| TAS2-M4M5 | M4 external thread to M5 external thread | 1 | $1.96 | today | Add Cart | ||
| TAS2-M6E25-P10 | Converting M6 Male to 1/4"-20 Male; | 10 pieces per package | $21.18 | today | Add Cart | ||
| TAS2-M6E8-P10 | Converting M6 Male to 8-32 Male | 10 pieces per package | $21.70 | today | Add Cart | ||
| TAS2-M4E25-P10 | Converting M4 Male to 1/4"-20 Male | 10 pieces per package | $21.70 | today | Add Cart | ||
| TAS2-M4E8-P10 | Converting M4 Male to 8-32 Male | 10 pieces per package | $21.18 | today | Add Cart | ||
| TAS2-M3E4-P10 | Converting M3 Male to 4-40 Male | 1 pack of 10 | $21.70 | today | Add Cart | ||
| TAS2-M4M6S-P10 | Converting M4 Male to M6 Male | 10 pieces per package | $15.82 | today | Add Cart | ||
| TAS2-M4M6-P5 | Converting M4 male to M6 male | 5 pieces per package | $7.98 | today | Add Cart | ||
| TAS2-M4M6 | Converting M4 male to M6 male | 1 | $1.96 | today | Add Cart | ||
| TAS2-M3M4-P5 | Converting M3 male to M4 male | 5 pieces per package | $7.98 | today | Add Cart | ||
| TAS2-M3M4 | Converting M3 male to M4 male | 1 | $1.96 | today | Add Cart |

LBTEK's Threaded to Cylindrical Dowel Adapters are used to directly align optomechanical components to M6 x 1.0 threaded holes, such as those on translation stages, optical tables, or breadboards. For quick and convenient alignment, the adapter can be screwed into a compatible 12.7 mm post, and then the locating pin is inserted into the M6 x 1.0 threaded hole on the mounting surface. The locating pin can rotate freely around the post axis while maintaining alignment with the threaded hole.
Since these adapters can be inserted into threaded holes, temporary components such as apertures or other alignment tools can be quickly inserted into the optical path. After rotating to the desired position, for a fixed installation, we recommend using additional accessories such as post clamps to secure the post or post holder to the table or breadboard.
These LBTEK threaded adapters have a 2.0 mm hex socket on the locating pin side for adjustment and securing of the threaded adapter. Metric adapters are marked with a circumferential ring on the locating pin side for identification. The M6 external thread adapter features an O-ring to prevent movement caused by play between threads and to prevent the adapter from being inserted too deeply into the component.

One end with a Φ4.8mm cylindrical locating pin, the other end with M4 and M6 external threads.
Product Model | Type | Quantity | Unit Price | Compare | Lead Time | ||
|---|---|---|---|---|---|---|---|
| TAS4-M4P5 New | M4 external thread to 4.8mm cylindrical pin | 1 pack of 5 | $24.97 | today | Add Cart | ||
| TAS4-M6P5 New | M6 external thread to 4.8mm cylindrical pin | 1 pack of 5 | $24.97 | today | Add Cart |