3/8" x 5-1/2" 16 TPI UNC Imperial Coarse Hex Bolt High Tensile Grade 5 – DMS Fasteners
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3/8" x 5-1/2" 16 TPI UNC Imperial Coarse Hex Bolt High Tensile Grade 5 Black

Set Quantity Per Pack
In stock. Free Shipping.
When will I receive this item?
You're eligible for same-day delivery in Melbourne on your order over $300! Please call (03) 8592 9640 to confirm and arrange your delivery.

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Free Shipping

Shipping for All Australian Orders:

Estimated Delivery Time: For a precise estimate of delivery time, please visit the product page of the item you wish to purchase. Enter your postcode into the "When will I receive this item?" section to receive a tailored delivery estimation.

Free Shipping:Β Every order will automatically receive free standard shipping.

Free Express Shipping:Β Orders over $50 qualify for free express shipping.

Next Business Day Delivery:Β Available for selected postcodes and subject to AusPost terms and conditions. [Please refer to our table below for eligible postcodes.]

City/State Eligible Postcodes
Canberra 0200-0250, 2600-2620, 2900-2914
Sydney 1000-1920, 2000-2249, 2555-2574, 2740-2786
Melbourne 3000-3207, 3340-3341, 3750, 3755-3757, 8000-8785
Brisbane 4000-4209, 9016-9019
Gold Coast 2484-2490, 4210-4275, 9726
Adelaide 5000-5171, 5800-5950
Perth CBD 6000-6005, 6800-6899
Tasmania 7000-7019, 7050-7053, 7055, 7248-7251, 7253, 7258, 7261, 7267, 7275-7300, 7306, 7310, 7311-7315, 7320-7322, 7325, 7800-7899

Same-day Dispatch:Β 

All orders placed before 2pm (AEST) during weekdaysΒ will be dispatched on the same day.

Order Tracking:

Once your order has been dispatched from our warehouse, you will receive an email notification containing your shipment tracking information. This allows you to monitor your package's journey and get a clear estimate of its arrival.

    International Shipping Policy:

    Please be aware that international shipments may be subject to import duties, taxes, and customs processing fees, which are levied once the package reaches its destination country. These charges are the responsibility of the recipient and are not included in our shipping fees.

    No Deadline Returns

    Unlimited Returns with a 20% Restocking Fee

    While we offer an unlimited timeframe to return your items, please note that all returns are subject to a 20% restocking fee. This fee helps us maintain our high standards of quality and service.Β Please note that cancellations will be treated the same as returns, subject to the same 20% restocking fee.

    Return Conditions

    To be eligible for a return, your item must be in the same condition you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

    Start Your Return

    • Self-Serve Returns (For Registered Customers): If you have a customer account, you can initiate a return directly through our self-serve returns portal. This streamlined process is quick and easy.
    • Via Email: If you don’t have a customer account, no problem! Just email us at info@dmsfasteners.com.au to start your return process.

    Please note, the buyer is responsible for the return shipping label and associated costs.

    Return Process

    Once your return request is accepted, we will provide you with instructions on how and where to send your package. Please remember, items sent back to us without first requesting a return will not be accepted.

    Damages and Issues

    Upon receiving your order, please inspect it and contact us immediately if the item is defective, damaged, or if you receive the wrong item. We will evaluate the issue and work promptly to make it right.


    To exchange an item, return the original item, and once the return is accepted, you can make a separate purchase for the new item.


    After we receive and inspect your return, we will inform you whether the refund was approved or not. Approved refunds will be processed, and a credit will automatically be applied to your original method of payment within 5 business days. Note that it may take some time for your bank or credit card company to process and post the refund.

    If more than 15 business days have passed since we approved your return, please contact us at info@dmsfasteners.com.au.

    Shipping Icons

    Type : Hex Bolts
    System of Measurement : Imperial
    Bolt Size : 3/8"
    Length : 5-1/2"
    Coarse/Fine : Coarse
    Pitch : 16 TPI
    Grade/Class : Grade 5
    Finish : Black Oxide
    Listing Group ID : HB3/8-16G5BL
    Disclaimer : This information is provided for general informational purposes only. While efforts have been made to ensure accuracy and reliability, it is offered without warranty. Consultation with professionals or experts is advisable for specific situations. The authors, publishers, and distributors bear no responsibility for errors, omissions, or actions based on this information. Users assume all associated risks, and reliance on any part of the content is at the user's own risk.

    Request for Quote (RFQ) – Response Within the Hour

    Please Note: Our store is continuously being updated with new listings. If you don’t see an item you need in your quote, go ahead and include it anyway. We’re still in the process of adding all our products online!

    Trade Account

    Looking for a new supplier for fasteners? Open a trade account with us today.

    Technical Resources

    Access our technical guides and resources for detailed information on your fasteners.

    Over 20,000 Happy Customers Across All Channels

    Really good to deal with, one of the best, I will buy again and again, fast shipping times.


    Verified eBay Review

    There guys were great! Fast to dispatch and followed up with a phone call. Great after sales service and my order was quite small so huge thumbs up from me!


    Verified Google Review

    Well priced item. Prompt postage. Great service.


    Verified eBay Review

    Very happy with my purchase. The screws I bought were good quality and came relatively quickly. DMS have a good range and quantity options to choose from so I will be buying from them again.

    Tim Robinson

    Verified Google Review

    Very good value and they arrived in very quick time. It's a lot cheaper and easier than shopping at Bunnings.


    Verified eBay Review

    1 of 5
    DMS Fasteners

    3/8" x 5-1/2" 16 TPI UNC Imperial Coarse Hex Bolt High Tensile Grade 5 Black

    From $1599

    Set Quantity Per Pack

    • 1
    • 5
    • 10
    • 25
    • 50
    • 100
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