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ProtoArc EC300 Replacement Screw & Hardware Kit
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EC300 Replacement Screw & Hardware Kit

$20

In stock at protoarc.com

This EC300 Replacement Screw & Hardware Kit is a full set of 23 screws plus a T-handle Allen wrench for the ProtoArc EC300 ergonomic chair. It covers the base, armrests, tilt mechanism, lumbar support, backrest, and headrest. At $20, it is for EC300 owners who lost hardware during a move or reassembly.

Shop now at ProtoArc →Code GFPALEKSANDRBODNAR

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Price and stock from protoarc.com, refreshed daily. We may earn a commission if you buy.

Highlights

  • 23 replacement screws for the EC300
  • Includes a T-handle Allen wrench
  • Covers base (M8x16), armrests (1/4x60, 1/4x50), tilt (M8x35), lumbar (ST6x20), backrest (M8x20), headrest (M5x16)
  • Matches the EC300 user manual part labels G1 to G6

Best for

ProtoArc EC300 owners missing screws after moving or disassembling the chair.

Things to consider

  • Final sale, so returns and exchanges are not accepted except where required by law.
  • Compatibility with other ProtoArc chairs is not guaranteed.
  • Includes hardware only, no chair parts.

Key specs

Price$20.00
Compatible withProtoArc EC300
Contents23 screws + 1 T-handle Allen wrench
Return policyFinal sale

Our take

Handy and inexpensive if you own an EC300. Confirm your model before buying since it is final sale.

EC300 Replacement Screw & Hardware Kit at a glance

BrandProtoArc
Price$20
TypeChair Accessories
AvailabilityIn stock at protoarc.com
CouponGFPALEKSANDRBODNAR
ReturnsReturns within 30 days of delivery get a full refund including original shipping and…

Price check

At $20, the EC300 Replacement Screw & Hardware Kit is one of ProtoArc's more affordable items, whose 110 listed products run $9.90 to $292.95.

Similar items from other brands we track run $13.99 to $159.95.

Buying from ProtoArc

ProtoArc is a smart pick for desk workers who want ergonomic keyboards, mice or a mesh chair without paying premium-brand prices, and its 2-year accessory warranty and free US shipping over $19.99 lower the risk. Skip it if you need a deeply customizable mechanical keyboard or ship to Hawaii, Alaska or an APO address, where service is restricted. Check which layout and OS a keyboard is built for (several models are Mac-specific or UK layout) before you order.

Shipping
Continental US orders ship free over $19.99 with an estimated 3 to 5 business days. Canada is quoted at 5 to 7 business days, and the UK, Germany and select EU countries pay rates calculated at checkout.
Returns
Returns within 30 days of delivery get a full refund including original shipping and handling fees. ProtoArc provides a prepaid label for defective or incorrect items; change-of-mind returns ship at the customer's cost, and an RMA number is required.
Warranty
Keyboards, mice and other accessories carry a 2-year warranty from delivery, and furniture carries 3 years, with select premium chairs eligible for 5 to 10 years. Claims go to support@protoarc.com with your order ID and photos or video.
International
Service covers the US, Canada, the UK, Germany and select EU countries. Remote areas, international orders and oversized items may incur extra fees.

Read our full ProtoArc review and shop all products →

Frequently asked questions

Will this kit fit other ProtoArc chairs?
It is designed only for the EC300, and ProtoArc does not guarantee other models.
Can I return it?
No. It is a final-sale item except where the law requires returns.
How much is the EC300 Replacement Screw & Hardware Kit?
ProtoArc lists it at $20 on protoarc.com. We refresh prices throughout the day, but always confirm the final price at checkout.
Is there a coupon code for the EC300 Replacement Screw & Hardware Kit?
ProtoArc's store-wide code GFPALEKSANDRBODNAR can be entered at checkout on protoarc.com. ProtoArc sets the discount, and some items or sale prices may be excluded.
What is ProtoArc's return policy?
Returns within 30 days of delivery get a full refund including original shipping and handling fees. ProtoArc provides a prepaid label for defective or incorrect items; change-of-mind returns ship at the customer's cost, and an RMA number is required.
How long does ProtoArc take to ship?
Continental US orders ship free over $19.99 with an estimated 3 to 5 business days. Canada is quoted at 5 to 7 business days, and the UK, Germany and select EU countries pay rates calculated at checkout.
Does the EC300 Replacement Screw & Hardware Kit come with a warranty?
ProtoArc's published warranty terms: Keyboards, mice and other accessories carry a 2-year warranty from delivery, and furniture carries 3 years, with select premium chairs eligible for 5 to 10 years. Claims go to support@protoarc.com with your order ID and photos or video.
Where can I buy the EC300 Replacement Screw & Hardware Kit?
The EC300 Replacement Screw & Hardware Kit is sold directly by ProtoArc on protoarc.com. The Shop now button on this page goes straight to the product there, and code GFPALEKSANDRBODNAR can be applied at checkout.
Is the EC300 Replacement Screw & Hardware Kit in stock?
Yes. ProtoArc lists it as in stock on protoarc.com as of our latest check. Stock and prices refresh throughout the day.
Is ProtoArc a legit store?
ProtoArc is a smart pick for desk workers who want ergonomic keyboards, mice or a mesh chair without paying premium-brand prices, and its 2-year accessory warranty and free US shipping over $19.99 lower the risk. Skip it if you need a deeply customizable mechanical keyboard or ship to Hawaii, Alaska or an APO address, where service is restricted. Check which layout and OS a keyboard is built for (several models are Mac-specific or UK layout) before you order. Our full ProtoArc review covers shipping, returns and what to check before ordering.
Is the EC300 Replacement Screw & Hardware Kit expensive?
At $20 it is on the affordable end of ProtoArc's range ($9.90 to $292.95 across 110 products), and similar items from other brands run $13.99 to $159.95.

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