![](https://d31wxntiwn0x96.cloudfront.net/tjdahw/productimages/822.png?width=547&etag="ab460ed23bd83ec9353be39ca5380ec4")
![](https://d31wxntiwn0x96.cloudfront.net/tjdahw/productimages/822.png?width=800&etag="ab460ed23bd83ec9353be39ca5380ec4")
Additional Information
To contact our Customer Service Team, simply click the button here and our Customer Service team will be happy to assist.
© Fixaball
UNC 3/4" Socket Screw Countersunk High Tensile 10.9 DIN7991
UNC 3/4" (10 T.P.I.), Coarse Pitch, High Tensile (Grade 'S'/ 10.9), Self Colour. Allen (hex) Socket, Countersunk Head, Allen Screw/ Bolt, ISO 10642, B18.3, BS 2470
Fixaball sells all lengths of 3/4", UNC, countersunk socket screw bolts.
Countersunk Head, Allen/ Hexagon Socket Screw/ Bolts
A countersunk head is designed so that the head sits flush on the fastened material's surface. The hexagonal socket in the head is uséd to tighten and loosen the fastener with an allen/ hex key/ wrench. The length of a countersunk fastener is always from tip to the top. Countersunk socket fasteners are a bolt if they have a partially threaded shank (part plain shank) and are a set screw if they are fully threaded. The shank appears in the longer lengths. Please contact us if the shank length is crucial.
How to measure a countersunk fixing/ fastener
The length of a countersunk fixing/ fastener is always from tip to the top.
High Tensile – 10.9 Grade Steel.
Available Finish: Plain/ Black/ Self Colour
Orders placed before 2pm are dispatched same day (Mon-Fri).
Standard, Free Delivery is Royal Mail, 2nd Class (2-5 days, most likely 2 days). For a faster delivery time, select 1st class or courier at checkout.
Please make your ‘Number of Items in Pack', 'Length' and ‘Quantity’ (of packs) selection from the drop down menus.
UNC, 3/4" Allen Socket, Countersunk Screw/ Bolt lengths available:
FT - Fully Threaded
PT - Partially Threaded
| 3/4"-10x1",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
| 3/4"-10x1 1/4",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
| 3/4"-10x1 1/2",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
| 3/4"-10x1 3/4",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
| 3/4"-10x2",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
| 3/4"-10x2 1/4",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
| 3/4"-10x2 1/2",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
| 3/4"-10x3",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNC ALLOY SELF COLOUR |
|
Fixaball – Specialist Fixings and Fasteners UNC/ UNF Countersunk Socket Screw/ Bolt Diameters and T.P.I.'s Conforming to ISO 10642, B18.3, BS 2470 |
||
|
Thread Pitch (Threads Per Inch/ T.P.I.) |
||
|
Diameter |
UNC |
UNF |
|
No. 4 |
40 |
48 |
|
No. 5 |
40 |
44 |
|
No. 6 |
32 |
40 |
|
No. 8 |
32 |
36 |
|
No. 10 |
24 |
32 |
|
¼ |
20 |
28 |
|
5/16 |
18 |
24 |
|
3/8 |
16 |
24 |
|
7/16 |
14 |
20 |
|
½ |
13 |
20 |
|
5/8 |
11 |
18 |
|
¾ |
10 |
16 |
|
7/8 |
9 |
14 |
|
1 |
8 |
12 |
|
1.1/4 |
7 |
12 |
|
1.1/2 |
6 |
12 |
Self Colour, High Tensile 8.8 Material Properties
|
Material/ Finish |
Appearance |
Level of Corrosion Resistance |
Typical Application |
|
High Tensile Steel (10.9) |
Self-Colour (black) |
Low, without further surface treatment |
· No exposure to moisture · Often Greased/ Oiled |
UNIFIED THREAD STANDARDS
The basic American standards for fastening screw threads as agreed upon by standard bodies of Canada, the United Kingdom, and the United States. They are a complete and integrated system of threads for fastening purposes. Their outstanding characteristic is general interchangeability of threads achieved through the standardization of thread form, diameter-pitch combinations, and limits of size
Unified National (UN) thread form with a rounded root contour, applies only to external threads. (The UN thread form has a flat, or optionally, a rounded root contour.) The majority of fasteners with a Unified thread form (UNC UNF) have a rounded root contour i.e. are UNR threads.
Unified National Coarse (UNC) is a thread form with a 60 degree flank angle rounded roots and flat crests. For a given diameter it has a larger thread pitch than an equivalent diameter UNF thread. The unified thread is based on inch sizes and was first standardised in 1948 unifying the Whitworth and American standard thread forms.
Image is for illustrative purposes only.
Postage info
Click the Postage tab above the listing description for more info
Additional delivery notes
PICK UP OPTION
Sorry, our items are NOT available for pick-up.
|
PAYING VIA PAYPAL |
We accept PayPal on our all our items so you can shop with confidence.
Simple choose the PayPal option when proceeding through the checkout.
Paying via Direct Deposit
Simply add the freight cost to the item cost and forward the total amount to the address to be provided following your purchase.
Click the Postage tab above the listing description for more info
Accepted Payment Methods
- PayPal
- Direct Deposit
Returns are accepted
Items must be returned within 30 days of the auction ending
Buyer will pay for return shipping.
Additional Information:
Returns 'NO QUIBBLE' Our returns policy lasts 30 days. If 30 days have gone by since delivery, unfortunately we can’t offer you a refund or exchange (+ a couple of days, grace). To be eligible for a return, your item must be unuséd and in the same condition that you received it. It must also be in the original packaging with original documentation. A restocking fee of 15% will be applied to refunds. Cost of sending the shipment is not refunded unless the wrong item was sent. To complete your return, we require a receipt, invoice or other proof of purchase. This will enable an easier process of locating and amending orders. Please keep all labels, stickers and original packaging to be eligible for free returns. Refunds (if applicable) NO QUIBBLE - We invite all people to stay with us as their preferred supplier of fixings and fasteners. If you're not happy, we will do everything possible to help. Please, please, please keep all documents, stickers, labels and packaging; it makes the process run quicker and easier. Orders over £1000 need to be returned within 5 working days to be accepted, processed and refunded. Late or missing refunds (if applicable) If you haven’t received a refund on the day of return please contact us to verify the situation. Banks vary in their reaction time to changes; there is often some processing time before a refund is posted. Any concerns no matter how small, contact: 01242 522244 Sale items (if applicable) Only regular priced items may be refunded, unfortunately sale items cannot be refunded. Exchanges (if applicable) NO QUIBBLE - All exchanges are welcomed, assuming that items are suitable for re-sale. Please, return the item with the invoice and a note describing what you would like as an exchange. AN invoice will be sent to cover the postage to send the exchanged item. Free returns are available in the very rare event that we have sent an incorrect item. Orders over £1000 need to be returned within 5 working days to be accepted, processed and exchanged. Shipping 99% of orders are dispatched the same day as purchase if the order was made before 2pm. After 2pm your order will join the following days post. Royal Mail deliver most items up to 2kgs and Interlink Express deliver our oversized and heavier items, next day. Usually, the easy bit is getting the order out the door, but, what happens after can occasionally disappoint us both. If delivery is crucial/ time sensitive, you should select a faster and/ or signed for postage option at checkout. Mailing Disclaimer 98% (490 orders) of shipping arrives on time. 2% (10 orders) are late 1.4% (7 orders) 1 day late 0.4% (2 orders) 2 days late 0.2% (1 order) 3+ days late 0.01% is reported lost. - 1 every couple of years Our 'NO QUIBBLE' guarantee gives you peace of mind that we will accept all, undamaged returns and issue a refund, every time. If you need a definite arrival time please select an express service at check out to avoid disappointment.
eBay integration by
