Post Collar, 0.313 in. Diameter Optical Posts

The C-0.3 Miniature Post Collar provides an index point for a specific post height, allowing a 0.313 in. (7.9 mm) post to be removed from a post holder and returned to the same height. It also allows a post to be rotated in a post holder while maintaining a fixed height. Our new post collars can be added or removed from a post at any time, without taking apart your assembly.
Specifications
- TypePost Collar
- Height6.4 mm
- Thread Type8-32
- MaterialAluminum
- Diameter7.9 mm
Resources & Downloads
Other
C-0.3 RoHS Certificate(278.6 kB, PDF) C-0-3_RoHS2021.pdf(682.6 kB, PDF)
Related Products
Accessories
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | PRL-12Precision Optical Rail, 12.46 in. Length, 3.93 in. Width, 12 in. Scale | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PRC-1Optical Rail Carrier, 1.0 in. Length, 1/4-20 Thread, PRL Series | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PRC-3Optical Rail Carrier, 3.0 in. Length, 1/4-20 Thread, PRL Series | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PRL-6Precision Optical Rail, 6.56 in. Length, 3.93 in. Width, 6 in. Scale | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PRXRail Indexing Block, 0.5 in. (12.7 mm) Length, No Holes, PRL Series | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Similar
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | C-0.5Post Collar, 0.5 in. Diameter Optical Posts | |||||
![]() | CA-1Optical Post Clamp, Right-Angle, 0.5 in. Diameter Optical Posts | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | CA-TOptical Post End Clamp, Right-Angle, 0.5 in. Post, 8-32 (M4) CLR | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Compatible
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | SP-12Optical Post, 12 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SP-3Optical Post, 3.0 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SP-4Optical Post, 4 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SP-1Optical Post, 1.0 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SP-8Optical Post, 8 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Frequently Purchased Together
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | MSPH-1Optical Post Holder, 1.25 in. Height, 7.9 mm Posts, 1/4-20 Slotted Base | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | TSP-2Optical Post, 2.0 in. Height, 0.313 in. Diameter, 2-56 & 8-32 Threads | |||||
![]() | MSPH-1.5Optical Post Holder, 1.75 in. Height, 7.9 mm Posts, 1/4-20 Slotted Base | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | TSP-3Optical Post, 3.0 in. Height, 0.313 in. Diameter, 2-56 & 8-32 Threads | FREE 2-day shipping on thousands of products on Newport.com Learn More |



















