I need to mount a brass Petzval lens on a wooden lens board. The flange has these really tiny holes, so I went to ACE Hardware and spent 30 minutes or so picking through treys of little screws. Finally determined that a 2-56 size would fit. But Thay only had 1/2' long screws. I say screws, but what I mean is bolts. I want to through bolt this heavy lens with nuts and washers. Don't want to have tiny wood screws tearing out. What I bought there cost me $16 with nuts and washers!

Anyway, back at home I realized that 1/2 inch is not LONG enough. I got onto Amazon a tried multiple combinations of terms till finally the exact thing popped up. Looks great and in about any length I need. But the minimum seems to be 100 pieces! Well I bought 'em and that was just $19.