three big golden screws

abstract alloy background big bit bolt bolts chrome circle clincher closeup construction copper cross design detailed elements engineering equipment fasteners fastening fix gold golden gray grey hardware head heavy industrial industry iron isolated long macro mechanical metal metallic mix nail new nut object parts pattern pin polished repair rivet screws set shiny short sign silver size small solid stainless stave steel stud texture thread three tighten tool tools utensil various washers white work worker workshop wrench yellow zinc