Effects of Current Tariffs on Fastener Prices

We have been informed Monday, May 13, 2019 by our importing supply chain partners that we will experience across-the-board price increases. Increases range from 3% to 15% due to the Section 301 tariff on Chinese goods.

Not all items will be affected. We will communicate when price increases are necessary. Mudge Fasteners will mitigate the increases as much as possible.

The Mudge Fasteners Team

Kyle Domer
Imperial vs. Metric Reference Chart

Have you ever wondered what the differences are between imperial and metric fasteners? We created the chart below to help you sort through the differences in materials, mechanical properties, markings, thread sizes, tensile strengths and more.

Imperial vs Metric Fasteners

Click here to download a printable PDF version of the chart.

Still have questions? Contact us, we’re happy to help.

Kyle Domer
Enter to win a DeWALT Screwgun Kit at SPI 2018!

Mudge Fasteners is pleased to give away a DeWALT DCF622M2 Versa-Clutch Adjustable Torque Screwgun Kit at Solar Power International 2018… a $369 value!


Features & Specs

  • Up to 2,000 RPMs of consistent speed, ideal for metal fastening applications

  • Versa-ClutchTM System to help prevent damage to material and fasteners (Comparable to DW268)

  • DEWALT built brushless motor for increased efficiency and runtime

  • LED light for increased visibility and illunminating dark work areas


  • (1) DCF622 - 20V MAX* XR® Versa-ClutchTM Adjustable Torque Screwgun

  • (2) DCB204 - 20V MAX XR* 4.0 Ah Batteries

  • (1) Fast Charger

  • Belt Hook

  • Tool Bag

To enter, just stop by Booth #2283 and get your badge scanned or drop off a business card! A winner will be chosen at random after the conclusion of the show to receive the DeWALT DCF622M2 Versa-Clutch Adjustable Torque Screwgun Kit.

To learn more about Solar Power International 2018, click here.

Kyle Domer
Solar Power International 2018 Q&A with Alt Energy Magazine

This article was originally published at AltEnergyMag.com

Mudge Fasteners at Solar Power International

Tell us about your company. 

Family owned and operated since 1975, Mudge Fasteners provides a large selection of fasteners, fastener tools and adhesives to customers in a broad range of industries. Mudge is a fastener source for businesses both small and large; locally, nationally and internationally.

Your company will be exhibiting at SPI 2018, what is it that makes this an important event for your company? 

As the first fastener supplier to offer a dedicated solar power program, SPI has always been an exciting time to catch up with our customers who have been with us since the beginning, as well as see what new innovations are coming to market. Additionally, this year is extra special for Mudge Fasteners, because it marks our 10th consecutive year exhibiting at SPI, which is yet another testament to our commitment to servicing the solar industry.

Highlight 2 or 3 products you will be showcasing at the event?

DURA-CON Corrosion Resistant Fasteners

DURA-CON® Corrosion Resistant Fasteners are the only fasteners specifically tested for use in solar racking materials. DURA-CON® Fasteners show resistance to Environmental Corrosion equal to that of stainless steel fasteners when tested in aluminum solar panel racking. 

EJOT Solar Flashing

EJOT offers high quality, secure and easy-to-install fastening systems for commercial and domestic rooftop solar installations, and is the specialist for fastening mounting systems for solar installations on an array of roof types. 

Solar Connections Solar Hardware

Solar Connections is a leader in the development of mounting solutions for solar panel installations, providing attachment options for rail or rail-free installation on various roof systems, including standing seam, corrugated metal, ribbed metal and asphalt shingles. Titebond® WeatherMaster™ ULTIMATE MP Sealant is able to expand and contract due to changes in temperature without cracking.

When you get a chance to walk the exhibit hall floor yourself, what is it you will be most interested to see?  Any educational sessions you plan on attending? 

For us in the fastener world, the most exciting new products are those that showcase innovation in attachment methods.

When you book a booth for a tradeshow like this what are your expectations and what does your company hope to accomplish at the event? 

At SPI, we love to catch up with all of our customers at the same time, some of who have been with us for over a decade. It's also great to see what innovative new products will be brought to market, and it's even more exciting to connect with newer installers and manufacturers who can benefit from our knowledge of fasteners and industry, and our well-honed supply chain and logistical support.

A tradeshow of this magnitude is extremely busy and stressful for the staff of exhibiting companies.  Any fun things or places your team can suggest in Anaheim to help unwind? 

The Anaheim Packing House is a former orange packaging facility built in 1919 that has been revitalized as a 2-story food hall, is only a few miles from the convention center, and offers some of the more unique food in Orange County. There are also several places around the convention center where you can catch the Disneyland fireworks before heading to bed, whether viewing from a walk along the street or a hotel balcony.

To learn more about Mudge Fasteners at Solar Power International 2018, visit www.mudgefasteners.com/spi2018.

Kyle Domer
Mudge Fasteners to Exhibit at Solar Power International for Tenth Consecutive Year

Mudge continues to cement reputation as the Solar Fastener Expert™ at the industry's largest trade show.

CORONA, CA, JUNE 26, 2018 - Mudge Fasteners, the leading supplier of fasteners and hardware to the solar power industry, will exhibit at Solar Power International for the tenth consecutive year. Solar Power International 2018, the industry's largest trade show, will take place at the Anaheim Convention Center in Anaheim, CA on September 24-27, 2018. Mudge Fasteners will be exhibiting at booth number 2283.

In addition to Mudge Fasteners' selection of over 60,000 standard stainless steel fasteners, SPI attendees visiting the Mudge Fasteners booth will be able to view the latest selection in solar mounting hardware from top brands such as 3M, EJOT, GRK Fasteners, DURA-CON, Solar Connections, Titebond, HellermannTyton, Diamon-Fusion International and more.

As the first fastener distributor to offer a dedicated solar power product selection, celebrating ten consecutive years at SPI reaffirms our commitment to continue being the Solar Fastener Expert™. We look forward to connecting with our existing customers and meeting the new faces that push this exciting, innovative industry forward.

- Paul Mudge
President, Mudge Fasteners

About Mudge Fasteners
Family owned and operated since 1975, Mudge Fasteners provides a large selection of fasteners, fastener tools and adhesives to customers in a broad range of industries. Mudge is a fastener source for businesses both small and large; locally, nationally and internationally.

About Solar Power International
Solar Power International (SPI) and Energy Storage International (ESI) generates success for energy professionals and the global solar industry. SPI sets the standard for solar events as the fastest growing and largest solar show in North America as recognized by Trade Show Executive and Trade Show News Network. SPI has also been among the Gold 100 for eight years running and named this year's "Best Use of Technology" and the 2016 "Stickiest Show Floor" by Trade Show Executive for the innovative ways in which attendees stay engaged.


For more information about Mudge Fasteners at Solar Power International 2018, contact Marisa Mudge at marisa.m@mudgefasteners.com or visit www.mudgefasteners.com/spi2018.

Kyle Domer
LADBS to Recognize ICC-ES Reports as Proof of Compliance to the Seismic Requirements of the California and City of Los Angeles Building Codes

City of Los Angeles to Expand ICC Evaluation Service Provider Status


In a progressive move to further enhance the service it provides to the public, the City of Los Angeles Department of Building Safety (LADBS) is working to recognize ICC Evaluation Service Reports (ESRs) as proof of compliance to the seismic requirements of the California and City of Los Angeles building codes. LADBS has been accepting ICC-ES reports in all other categories for many years. The goal is for this initiative to be fully implemented by January 1, 2018.

Prior to the effective date, voluntary pilot programs will be instituted in order to ensure a smooth transition to the use of ICC-ES ESRs.

“With 70 years of product evaluation experience, ICC-ES looks forward to the opportunity to work closer with LADBS and provide full-service evaluations to manufacturers looking to distribute their products in the City of Los Angeles,” said ICC-ES President Shahin Moinian, P.E. “While ICC-ES has been evaluating products in a number of categories, the latest expansion of the program now allows us to service all categories of building products, including seismic, to help ensure the safety of those who work, live and play in the City.”

Click here to download the full press release.
Click here to download a PDF version of the Fastener Code Approvals Chart.

Kyle Domer
The Ultimate Sealant for Solar Installations

Titebond® WeatherMaster™ ULTIMATE MP Sealant is specifically formulated to outperform all other sealant technologies, including VOC solvent, silicones, tripolymers, and urethanes. It offers unbeatable adhesion to aluminum, painted metal, PVC, concrete, wood, masonry, vinyl, glass, plastic, steel, asphalt roofing and most common building materials such as wall panels, siding, flashing, and sheet metal including Kynar™ and Hylar™ 5000 coated metal panels. Titebond® WeatherMaster ULTIMATE MP Sealant adheres well to damp surfaces and provides a weather-tight seal against water, wind, dust and dirt. This sealant is ideal for use on a variety of roofing applications, gutters, metal and vinyl siding, windows, doors, and air vents. It will form a flexible seal that is perfect for use on recreational vehicles, tractor trailers and buses.

  • Outperforms silicone, tripolymer and urethane sealants
  • Applies easily in extreme weather conditions and provides a permanently flexible, weather-tight seal
  • Excellent adhesion to most common building materials including Kynar™ and Hylar™ 5000 coated metals
  • UV-resistant and VOC-compliant
  • Compatible with all types of foam
  • Approved for use on buildings in both Miami-Dade County and throughout the country 

Titebond WeatherMaster ULTIMATE MP Sealant is available in over 20 colors. If touch-ups are necessary, it may be painted* with a water-based (latex-based) paint one hour after application. This sealant extrudes well in cold weather conditions (down to 0°F/-18°C) and is UV-resistant, making it the ideal choice for exterior applications. It will expand and contract with the changes in weather and temperature and will not crack. ULTIMATE MP Sealant contains no solvents or isocyanates and is VOC-compliant.

Kyle Domer
Mil-Spec Fasteners Now Available at FastenerExpert.us

Military Specified fasteners, commonly referred to as Mil-Spec fasteners, are manufactured to the exacting demands of the United States military. Mil-Spec fasteners can be classified by MS, AN or NAS numbers, and are used to fasten materials in military, government, aerospace, automotive or industrial applications.

While information on specific military fasteners and Mil-Spec codes is not easy to find on the internet, we've taken the work out of it by making Mil-Spec nuts, screws, washers and pins available online at FastenerExpert.us.

Mudge Fasteners understands how important military contracts are for our clients and is proud to offer Made in the USA military fasteners for less, directly from the comfort of your computer, smartphone or tablet.

Below is a small portion of the most popular Mil-Spec parts available. If you're looking for something you don't see here, contact us and we'll find it for you. Click on items in blue with the shopping cart icon 🛒 to buy online.


Machine Screws – Course Thread
MS 51957 🛒
NAS 1635 🛒
MS 24693C 🛒
MS51959 🛒
NAS 662C
AN 526C
MS 35275 🛒
AN 500AD

Machine Screws – Fine Thread
MS 51958 🛒
NAS 1635 🛒
MS 24693C 🛒
MS 51960 🛒
AN 526C
MS 35276 🛒
AN 501AD

Hex Head Cap Screw – 300 Series Stainless Steel
MS 35307 / NASM 35307 – Coarse Thread 🛒
MS 35308 / NASM 35308 – Fine Thread 🛒

Dowel Pins – 416 Stainless Steel
MS 16555 🛒

Socket Cap Screws
MS 16995 – Coarse Thread 🛒
MS 16996 – Fine Thread
NAS 1352C – Coarse Thread 🛒
NAS 1351C – Fine Thread 🛒

Finished Hex Nuts – 304 Stainless Steel
MS 51971 – Coarse Thread
MS 51972 – Fine Thread

Machine Screw Nuts
MS 35649 – Coarse Thread 🛒
NAS 671 – Small Pattern
MS 35650 – Fine Thread 🛒

Nylon Insert Locknuts
MS 17830 / NASM 17830

MS 35338 / NASM 35338 🛒

Tooth Lockwashers
MS 35333 / NASM 35333 – Internal Tooth 🛒
MS 35335 / NASM 35335 – External Tooth 🛒

Flat Washers
MS 15795 🛒
NAS 620-C 🛒
NAS 1149C 🛒
AN 960C 🛒

Available from Parker Fasteners
NAS 1635
NAS 1351 🛒
NAS 1352 🛒
NAS 1802
MS 16998
MS 24668
MS 27039
MS 16995 🛒
MS 16997 🛒
MS 24667
MS 24671
MS 24672
MS 24673
MS 24674
MS 24675
MS 16998

Kyle Domer
Introducing DeWALT Anchors - Engineered by Powers
DeWALT Anchors - Engineered by Powers

DeWALT Power Tools & Powers Fasteners are pioneers in developing innovative construction solutions.

Both DeWALT and Powers products have been used in the design and construction of many of the world's most iconic structures. Since 2012, engineers from both companies have collaborated together to design anchors and tools to deliver a complete system focused on performance and productivity.

Kyle Domer
Get FREE Registration to Solar Power International 2017 from Mudge

For the 9th consecutive year, Mudge Fasteners is proud to be exhibiting at Solar Power International. Visit us at Booth #4729 to see the latest is solar mounting hardware, specialty fasteners and unique attachment methods.

Join us in Las Vegas, September 10-13, and your registration is complimentary! ($250+ value) Click "Register Now" to receive your free registration, compliments of the Solar Fastener Expert.

To see all the innovative solar hardware products we'll be showcasing, click here to visit our SPI 2017 booth preview site. We look forward to seeing you in Las Vegas!

Kyle Domer
Tools, Bits and Personal Protective Equipment Now Available at FastenerExpert.us

Mudge Fasteners prides itself on being your one-stop shop for fasteners, but did you also know you can get all of your tools, bits and personal protective equipment from Mudge too? Not only that, but you can buy these items online at FastenerExpert.us from the comfort of your home or office, 24/7/365.

Kyle Domer
Join Us at the California Solar Expo and Get Free Registration!

The California Solar Power Expo, powered by SEIA and SEPA, is an interactive marketplace designed specifically for the California solar supply chain, including installers, developers, manufacturers, and service providers.

Mudge Fasteners will be exhibiting at Booth #87, and if you'd like to come visit us, you can receive FREE registration with the promo code EXCAEXPO17M.

As a full service provider to the solar power industry, Mudge Fasteners offers solutions to installers of all sizes, as well as manufacturers, EPCM firms and maintenance technicians.

Kyle Domer
What Are the Different Types of Solar Mounting Systems for Roofs?

One of the largest areas of innovation within solar involves the mounting system. Probably the most competitive solar pro­­duct market, mounting systems are an important element of solar arrays—they secure solar panels to the roof or the ground. Here, we go over the basic categories of roof-mounted solar systems to help new installers get a grasp on installation.

Sloped Roof Mounting Systems
When it comes to residential solar installations, solar panels are often found on sloped rooftops. There are many mounting system options for these angled roofs, with the most common being railed, rail-less and shared rail. All of these systems require some type of penetration or anchoring into the roof, whether that’s attaching to rafters or directly to the decking.

Flat Roof Mounting Systems
Commercial and industrial solar applications are often found on large flat rooftops, like on big-box stores or manufacturing plants. These roofs may still have a slight tilt but not nearly as much as sloped residential roofs. Solar mounting systems for flat roofs are commonly ballasted with few penetrations.

Solar Shingles and BIPV
As the general public becomes more interested in aesthetics and unique solar installations, solar shingles will rise in popularity. Solar shingles are part of the building-integrated PV (BIPV) family, meaning that solar is built-in to the structure. No mounting systems are needed for these solar products because the product is integrated into the roof, becoming part of the roofing structure.

Read the full article at Solar Power World.

Kyle Domer
Mixed Forecast for Construction in 2017

Overall growth expected, with slowing in multifamily and institutional

Construction starts will continue to grow in many, but not all, construction segments in 2017, according to the Institute for Trend Research Trends 10 Report, which looks at major benchmarks of microeconomic activity, including construction. Commercial construction is poised for increased year-over-year growth, while institutional and multifamily construction will begin to slow, according to the report.

The ITR report charts the location of various economic segments on the business cycle curve. Benchmarks in Phase A are at the early stages of recovery; those in Phase B are above year-ago levels; those in Phase C are still above year-ago levels, but the rate of growth has slowed; and those in Phase D are in recession, or below year-ago levels.... (Click here to read the full article at Glass Magazine.)

Kyle Domer
Lessons from the 2017 Solar Mounting Training Conference

The second gathering of the solar industry’s leading solar mounting manufacturers, installers and other players took place in early February in Anaheim, California. The 2017 Solar Mounting Training Conference (SOMO), hosted by S-5!, SEIA, OSEIA, CALSEIA and NABCEP, was a three-day event for solar installers to learn best mounting practices.

While many of the courses served as refreshers, there were still a few tips to pick up. Here are a couple:

Wire management is incredibly important. Wire management is important to the lifespan of projects, and there’s a real need for integrated wire management right now. It’s difficult to match wire management life expectancy with the lifespan of the solar array, but if you do your homework, you can find systems that comply.

Proper flashing installation. The lazy way to install flashings on an asphalt shingle roof is to slide in the flashing until you hit the nails above (example on the left). The correct way is to remove the nails and position the flashing above the third course.

Read the full article at Solar Power World.

Kyle Domer
2017 International Code Requirements for Commercial Glazing Systems

The family of I-codes published by the International Code Council (ICC) is the most widely used in the history of U.S. construction codes. Townhouses, condominiums more than four stories high, and apartment buildings, hotels and motels are considered commercial buildings in these codes. The requirements for commercial buildings are set forth in the International Building Code (IBC), the International Existing Building Code (IEBC) and the International Energy Conservation Code (IECC).

This article summarizes the major requirements for glazed assemblies, doors, skylights and other fenestration products in commercial buildings in the 2015 edition of the International Codes (I-codes)... (Click here to read the full article at Glass Magazine.)

Kyle Domer
Tips for Installing Solar Systems in Low Irradiance Areas

Solar energy has quickly developed over the last few years, and growing technologies have made going solar more affordable for more homeowners. As customers from a variety of geographical areas make the move to solar it is important to consider their individual energy potential. Areas with the highest energy bills often have the lowest irradiance ratings; however, this doesn’t mean everyone can’t enjoy efficient solar systems with high returns on investment. It’s important to use the right components.

Low irradiance areas should be treated in the same manner as roofs with high shade. Homeowners in these situations are more likely to benefit from microinverter systems over ones with a string inverters. Not only do microinverters have a longer expected lifetime than standard string inverters, their installation process makes it easier to expand the system in the future and allows for easy monitoring. An in-depth look into the operation of the system through monitoring makes troubleshooting easier and also provides insight into how to improve the overall output of the system.

Read the full article at Solar Power World.

Kyle Domer
Solar Legislation in the News

With new lawmakers in all levels of government across the US, there has been a lot of talk about solar legislation in the news lately. As the Solar Fastener Expert, we do our best to keep up on the latest, and we're here to help you do the same. Below are a couple articles that may be of interest to anyone in the solar industry:


Forty-seven states and the District of Columbia took some form of action on distributed solar policy and rate design changes during 2016, according to the N.C. Clean Energy Technology Center’s (NCCETC) latest edition of its “50 States of Solar” report.

The report says a total of 212 state- and utility-level distributed solar policy and rate changes were proposed, pending or enacted last year. NCCETC says this represents an increase in solar policy activity over 2015, when 46 states plus D.C. took approximately 175 actions.

In its report, NCCETC also ranks what it considers the top 10 most active states in 2016 for solar policy developments, as follows: (Click here to read the full article at Solar Industry Magazine.)



Early in February, the Maryland Senate voted to override Gov. Larry Hogan’s veto of the Clean Energy Jobs Act, legislation to increase the state’s renewable energy goals. Following a similar 88-51 House of Delegates vote just a few days ago, the Senate’s 32-13 decision brings the legislation into law.

The Clean Energy Jobs Act (S.B.921/H.B.1106) boosts the state’s renewable portfolio standard (RPS) from 20% by 2022 to 25% by 2020, as well as raises the solar carve-out from 2% by 2022 to 2.5% by 2020. According to the Maryland Climate Coalition, the legislation will lead to roughly 1.3 GW of new clean energy in the state. (Click here to read the full article at Solar Industry Magazine.)

Kyle Domer
Is Your Metal Roof Solar Ready?

This question has a quick and easy answer of “Yes!” if it’s a standing seam metal roof, the most solar-ready roof out there. Standing seam clamps, such as those offered by S-5! or Solar Connections, let installers mount on roofs without penetrating roofing material. With standing seam metal roofing panels, clamps secure the racks to the seam. Any time installers can avoid penetrating roofing material, they save time and money. This type of mounting also avoids potential leaks.

In addition, Metal Construction Association studies have shown that standing seam metal roofing systems can last 60 years or longer in most environments, when properly installed. Crystalline solar panels have a life expectancy of 25 to 30 years, so the metal roofing system will often outlast the solar panels. Mounting on standing seams with nonpenetrating clamps eliminates concerns about replacing a roof riddled with holes when the solar array becomes dysfunctional.

Article originally published at Solar Power World.

Kyle Domer