Accurate Manufactured Products Group, Inc. (AMPG) is a U.S. manufacturer specializing in hard-to-find fasteners, precision components, and architectural fittings. Based in Indianapolis, Indiana, AMPG offers a wide range of specialty fasteners, industrial accessories, and engineered products, with over 25,000 different items available. The company prides itself on quick shipping, with most stock items dispatched on the same business day.
Founded in 1987, AMPG is a family-owned business that manufactures and maintains inventory for all its products, with 95% of its business conducted through the largest industrial distribution companies worldwide. The company’s commitment to quality, availability, and service is encapsulated in its motto: “Beautiful Parts, Right Now.”
AMPG’s product catalog includes binding posts, shoulder bolts, washers, shims, and nuts, with a focus on architectural bolts designed for secure, threadless connections. These bolts come in various finishes, including bronze plated steel, chrome plated steel, and brass painted steel. The company also offers panel nuts, which are thinner than jam nuts, making them ideal for tight spaces or applications requiring a low profile.
AMPG’s niche lies in producing specialty fasteners and components using Star Swiss machines, which allows for high precision and rapid turnaround, typically within a week. The company’s clients span various industries, including robotics, architecture, and spaceflight, often requiring small lot sizes of around 300 pieces. AMPG fulfills approximately 400 orders daily, achieving tolerances as precise as 0.0005 inches.
To maintain these tight tolerances, AMPG emphasizes its testing and quality control processes. Every part number produced undergoes rigorous testing, including the first and last parts of a run and representative samples from longer runs. The company plans to enhance its quality control capabilities by adding a climate-controlled, A2LA-certified lab.
In addition to metal components, AMPG utilizes polymer 3D printers for parts that require material conservation. They also provide cross-reference alternatives for products, matching AMPG’s part numbers with equivalent items from competitors like Grainger, Unistrut, and Lyon, ensuring that customers can find alternatives even for out-of-stock or obsolete items.
AMPG Products
Shim Stock
AMPG shims are versatile components used to provide spacing and clearance in various applications. They can serve as either temporary solutions or permanent fixtures in many settings. AMPG offers both standard and custom shims, available in a variety of materials, sizes, and shapes.
- Wide Rim Shims
- Peel Away Shims
- Horseshoe Shims
- Shims for Shoulder Diameters
- Shims for Shafts
- Shims for D Shaft
- Shims for Bearings
- Wave Washers
- Tapped Flange Washers
Panel Nuts
These AMPG panel nuts are designed to be corrosion-resistant in wet environments, electrically conductive, and nonmagnetic. They can be tightened with a wrench, allowing for greater torque compared to knurled panel nuts. Commonly referred to as dress nuts, they are exceptionally thin, making them ideal for use in confined spaces like electrical panels.
Binding Barrels
Use these AMPG barrels with your existing screws or combine them with different types of screws to create a custom fastener. Crafted from stainless steel, they offer chemical resistance and may exhibit mild magnetism. The barrel length is measured from beneath the head.
Flange Nuts
AMPG flange nuts help minimize damage to parts and reduce the likelihood of loosening or vibration due to uneven fastening surfaces. Their flanged design acts as an integrated washer, distributing force more evenly over a larger area. Available in both locking and non-locking styles, AMPG’s high-quality flanged hex nuts come in various materials, heights, body styles, and wrench sizes.
Bolt Assortments
A diverse assortment of bolts offers a wide range of products for different applications and industries.
Nut Inserts
These AMPG nut inserts enhance the strength and stability of connections, allowing for repeated assembly and disassembly.
Hex Nuts
Hex Nuts, also known as full-height hex nuts, are six-sided, non-locking nuts. AMPG hex nuts are available in various materials, heights, and wrench sizes.
Shoulder Screws
AMPG shoulder screws, also known as shoulder bolts or stripper bolts, are machine-threaded screws with a cylindrical head and an unthreaded shoulder between the head and threads. The shoulder diameter is slightly larger than the thread diameter. Shoulder screw dimensions are specified by the shoulder diameter and length, with the thread diameter being proportional to the shoulder diameter.
Socket Head Cap Screws
AMPG socket head cap screws play a crucial role in contemporary design by facilitating smooth contours and surfaces, reducing bulky components, and enabling lighter constructions. They are particularly effective in applications involving flanges, lugs, pockets, and cover plates, aligning with modern design requirements for sleek and efficient solutions.
Machine Bolts
AMPG machine bolts are hex or square head bolts with external threads, used with a nut or tapped hole. They come in various head styles and thread types (UNC, UNF, UN, ISO metric) in both metric and imperial sizes. Made from a range of materials, they meet various ASTM specifications. Browse the page for details on manufacturing, sizes, types, and standards.
Flat Washers
AMPG flat washers come in various materials and finishes, with styles including machine screw, SAE, and USS types. They are compatible with machine screws and various bolts.
Tools
Precision Measuring Accessories
Collet Chucks
AMPG collet chucks are precision tool holders that securely grip cutting tools or workpieces using a collet, providing high accuracy and stability in machining applications. AMPG offers a variety of collet chucks, collets, and accessories for every machining application. They are made with high-quality materials to ensure maximum performance, safety, and longevity.
Hex Head Cap Screws
Hex head bolts, also called hex head cap screws, feature hexagonal heads and machine threads, designed for use with a nut or in a tapped hole.
Indicator Holders Bases and Stands
Enhance productivity in your machine setup with AMPG’s indicator holders and bases. Choose from vacuum, magnetic, or surface bases to securely and quickly attach drop indicators to both flat and uneven surfaces.
Micrometer Sets
Easy to Use – AMPG tools are designed with user convenience and excellence in mind. Attachments can be easily applied by snapping them onto the end of either the anvil or spindle, allowing for the simultaneous use of two attachments. Micrometer Anvil Set is designed for measuring shoulders, webs, angles, slots, grooves, holes, and other hard-to-reach areas.
Reducing Bushings
AMPG reducing bushings are often used with pulleys, gears, or sprockets to adapt the bore size to the shaft and ensure a tight fit.
