A cap screw is either a machine bolt or screw with a head type attached to the product name. These come in many head styles, sizes and material composition. Cap screw suppliers and manufacturers service industrial and commercial customers. Small businesses, contractors, automobile mechanics, plumbers, electricians and others use cap screws daily.

Basic material composition consists of steel, stainless steel, plated alloys and nylon. Order some types, including industrial cap screws, in both metric and inch sizes. When looking for cap screws consider the following:

1. Look for online tiered and discount pricing or contact the company for available discounts on large orders for any cap screw.

2. Select cap screws in either metal or nylon by grade and head type.

3. Find cap screw manufacturers, suppliers or distributors providing special solutions for non-standard types.

Action Steps
The best contacts and resources to help you get it done

Purchase small or large quantities from cap screw manufacturers

Select from a wide variety of inventory in metals or nylon. See additional descriptions, photos and drawings with each cap screw at these companies.

I recommend: Click a sub-category under “Cap Screws” in inch or metric, including molded hex head cap screws, molded socket head and socket head cap screws with size and tiered pricing at Stock Drive Products/Sterling Instrument. Select cap screws with prices and sizes, or refine your search on the same page from the menu at Fastenal Co., a distributor and cap screw manufacturer.

Find cap screw suppliers with good inventories and fast delivery

Each supplier of cap screws provides same day shipping. Various grades with some bolt/nut and washer assortment kits are available. Contact the company for special needs.

I recommend: Go to Northeast Fasteners Co., Inc to select hex cap screws by grade; click the type you need for size and price. Choose cap screws that include socket, flat, button and low head with prices at The Nutty Company, Inc., a cap screw supplier.

Locate cap screw distributors that carry quality products

Find metric and inch size stainless steel or select aluminum, black oxide, zinc plated and other metals with a variety of head types.

I recommend: Select a socket head cap screw in stainless, various alloys, steel, aluminum and nylon from Fastener-Express; click by head type for sizes and prices. If you require stainless steel bolts or special alloys, regular and heavy hex head cap screws, write down the series product number and click “Quote Request” at Delco Fasteners, Inc., a wholesale distributor of cap screws.

Find industrial cap screws for medium to heavy applications

These companies carry small and large cap screws for your business requirements, including grade 8 hex cap screws or 8.8 and 10.9 metric. One company provides additional refinements from a dropdown menu.

I recommend: Buy cap screws for industrial applications at Suburban Bolt & Supply Co., with prices for online orders; contact the company for quantity discounts. Click “Order Industrial Fasteners Now!” for hex cap screws in several grades of carriage, elevator and plow bolts at Gulf Coast Nut & Bolt Supply.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  The ISO standard for a hex cap screw is based on thread length: two times diameter plus 1/2 inch.