New Package of 75 pcs San Diego Mall 1 2"-13 x 2" Grade Carriage 5 4-1 Bolts New Package of 75 pcs San Diego Mall 1 2"-13 x 2" Grade Carriage 5 4-1 Bolts /cutireaction703369.html,(pcs),Bolts,5,Grade,New,of,Package,$105,x,4-1/2",Industrial Scientific , Fasteners,75,1/2"-13,,Carriage /cutireaction703369.html,(pcs),Bolts,5,Grade,New,of,Package,$105,x,4-1/2",Industrial Scientific , Fasteners,75,1/2"-13,,Carriage $105 New Package of 75 (pcs) 1/2"-13 x 4-1/2" Carriage Bolts Grade 5 Industrial Scientific Fasteners $105 New Package of 75 (pcs) 1/2"-13 x 4-1/2" Carriage Bolts Grade 5 Industrial Scientific Fasteners

New Package of 75 pcs San Diego Mall 1 2

New Package of 75 (pcs) 1/2"-13 x 4-1/2" Carriage Bolts Grade 5


New Package of 75 (pcs) 1/2"-13 x 4-1/2" Carriage Bolts Grade 5


Product description

SCREWS THAT YOU CAN DEPEND ON: Very strong and are great for both indoor and outdoor use. This stainless is superior to regular steel and provides excellent rust resistance.

Widely used in wind power industry, the aerospace industry, office equipment industry, petrochemical industry, the electronics industry, the communications industry, shipbuilding industry, environmental protection machinery, etc.

Our screw set is made up of High-quality stainless steel which is low in carbon and contains chromium at 10% or more by weight. Its perfect component gives the screws the ability to be able to resist corrosion or rust. Stainless steel can be used for a number of applications and throughout a number of industries. Whilst some stainless steel will retain high strength at high temperatures or will actually maintain high mechanical properties at cryogenic temperatures.

ProTactical US strives to manufacture best possible products for our customers .We love our customers and emphasis on user experience ,we never finish improving our products!

Life time warranty, a replacement will be sent to you for free when there is any quality problem, we will do our best to provide you a pleasure shopping experience.

New Package of 75 (pcs) 1/2"-13 x 4-1/2" Carriage Bolts Grade 5

How small do you need? They've told us plenty of times it can't be done, until we actually do it. Try us and see!

The micro-manufacturer of choice for companies, researchers, and entrepreneurs who value ...

You learn a thing or two after being in business for more than 30 Years

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Why choose Potomac?

1 micron


Our broad range of tools which include lasers, micro CNC, embossing/replication, alignment and bonding provide our customers with a one stop shop for their micro parts with features as small as 1 micron.

24 hours


Stop wasting time and money by waiting for your project to be completed. With our expedited micro machining services, we can promise a 24-72 hour turnaround on your project. Email us your drawings or use our new InstaQuote tool for immediate pricing and ordering capabilities.

Value Innovation


Our R&D Team is recognized as one of the best when it comes to developing new manufacturing technologies and we have a strong track record of helping our customers bring their products to the market quickly and cost-effectively.

what we do

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Rapid Turn Microfluidics – Herringbone mixer

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Excellent work, fast, and reasonably priced. The shop I used previously left rough edges, visible burning, and significant metal flashing around the edges. Potomac Photonics is in a completely different league and since I’ve started using them, the results have been much better. I’ve had them do everything from precise optical cut-offs to basic mechanical…

Ben Cramer, Joint Center for Earth Systems Technology. University of Maryland, Baltimore County


I could have made these (shadow masks with 10-micron diameter holes) myself in the lab, but the learning curve was high for the size of micro hole drilling we needed. That’s why I sought out Potomac Photonics. Their capabilities allowed me to save the time and energy of doing it myself.

Jean Anne Currivan, MIT Research Assistant


Thank you so much for helping us with our hummingbird tools. I can’t tell you how much people appreciate the precision of the Tarsus Gauge you all made for us. I just sent some gauges down to Costa Rica and Argentina for researchers there and they are thrilled to be better able to precisely measure…

Lee Rogers, Hummingbird Monitoring Network


We are developing a robotic capsule endoscope which is capable of mobility within the gastrointestinal tract. . . Potomac Photonics produces micro-drilled polyimide sheets that we use as molds to fabricate the micro-patterned polymers. . .

Levin Sliker, Graduate Research Fellow at the University of Colorado, Boulder


The resolution of this 3D printer was much higher than what we had in our onsite lab. Working with tolerances in the 1 – 2 thousandths range gave us the parameters we needed to fulfill the design requirement. . . 3D printing can’t always do everything we need, but it is a great tool and…

Marton Varady, CryoPop’s Project Manager


Potomac Photonics expertise and expediency enabled us to both deliver our flight unit calorimeter spectrometer insert on schedule and the opportunity to test in advance our proposed alignment method in Japan.

Meng Chiao, NASA


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