Require 75 units of 1?3/4" ×?1?3/4" ×?10' 14 ga galvanized square tubing with 7?16" holes on 1" centers across all four sides.  
Target price: $50 per unit.  
Need delivery within 15 days to Golden, Colorado.  
Confirm manufacturing capability for specified hole pattern and galvanization quality.  
Supplier must provide formal quotation with production timeline.

square washers

square hole copper terminals

Galvanized steel perforated square sign posts as follows-ASTM A1011A Grade 50 Yield strength 60,000psi min. c/w7/16" Diameter holes pre-punched on 1" centers on all 4 sides in true alignment and opposite to each other directly

Catalog over PCB screw terminals. Looking for > 15Amp with pin-through-hole 5,0 x 5,0 mm pitch (M3 or M5 size 4-40 or 6-32 screw with binding "washer").