Pack of 5-1Ft x 6" Diffraction Grating Roll Sheet Double Axis 13,500 l/inch - 5 Separate Sheets sold2024 One half of the bolt

One half of the bolt has a lag screw thread and the other half has a machine screw threading with a blunt tip

Locksmiths

XIKE 1 Pcs CF 5/8 N SB Double Rubber Seals Cam Follower Bearings

Push On Lock Washer Locking Washers Clips Fastener Stainless Steel 100pcs

Medium and Large sizes

Pack of 5-1Ft x 6" Diffraction Grating Roll Sheet Double Axis 13,500 l/inch - 5 Separate Sheets sold2024 One half of the boltPack of 5 1Ft x 6" Diffraction Grating Roll Sheet Double Axis 13,500 l inch 5 Separate Sheets Product Features Pack of 5 separate Linear Diffraction Grating Sheets 13,500 Lines Per Inch 1 Foot Length x 6 Inches Wide Science Classroom Optics Kits