550 Piece Hex Washer Tek Screw Assortment Starter Kit Bolts What's Included Commercial-grade heat shrink

What's Included Commercial-grade heat shrink tubing — multiple diameters

and structural mounting need a reliable supply of mid-strength coarse-thread hardware always on hand

QR-coded layout included

Flat washers and high-alloy lock washers — one set per diameter

550 Piece Hex Washer Tek Screw Assortment Starter Kit Bolts What's Included Commercial-grade heat shrink550 self drilling hex washer head tek screws across four diameters #8, #10, #12, and #14 in the most used lengths pre sorted in a 24 hole QR coded labeled metal drawer. Commonly used in the electrical and roofing industries, these self drilling screws eliminate the pre drill step in sheet metal and light steel work and drive reliably with any standard 5 16" hex bit or nut driver. What's Included Self drilling hex washer head tek screws #8, #10, #12,