0BA x 1.1/2" Socket Screw, Cap Head, High Tensile/ 12.9, DIN 912.

0BA, Cap Head, Socket Screw/ Allen Bolt, High Tensile (12.9), Self Colour Fixaball sells 0BA x 1.1/2" allen socket, cap head screw/ bolts. What is a socket cap screw/ bolt? The, ‘Socket Cap Screw/ Allen Bolt,’ term is used to describe a fastener that is either fully or partially threaded. A screw is fully threaded and a bolt is partialy threaded. Some engineers may call them screws if the person uses the shorter length range of sizes. The thread stays the same length as the fastener gets longer and the maximum length of thread is equal to 2.5 times the diameter (or thereabouts). ‘Socket,’ refers to the hexagon shaped indentation found on the top of the fasteners’ head. Here, you can use a hexagon key (Allen Key) to tighten and loosen the fastener. 'Cap' refers to the cylindrical shaped head. 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 'No. of Items in Pack', 'Length' and 'Quantity' of packs, selection from the drop down menus. Lengths available: 0BA x 1/2" wedgelock Material High Tensile – 12.9 Grade. BA Threads BA screw threads, named after the British Association for Advancement of Science, were devised in 1884 and standardised in 1903. Screws were described as "2BA", "4BA" etc., BA threads are specified by British Standard BS 93:1951 "Specification for British Association (B.A.) screw threads with tolerances for sizes 0 B.A. to 16 B.A." They are associated with metric units of measurement. BA threaded products are now made to order, are rare and expensive. Important BA Thead Information Screw Numbers Diameter of Screw Over Thread Head Across Flats Threads per inch Pitch Diameter at Thread Bottom Tapping Drill Size 16 BA 0.0310 inch 0.054 inch 133.3 tpi 0.0075 inch 0.0220 inch Number drill 730.6 mm0.0236 inch 15 BA 0.035 inch 0.061 inch 120.5 tpi 0.0083 inch 0.025 inch Number drill 700.7 mm0.0276 inch 14 BA 0.039 inch 0.068 inch 109.9 tpi 0.0091inch 0.028 inch 0.8 mm0.0315 inch 13 BA 0.047 inch 0.082 inch 102 tpi 0.0098 inch 0.0352 inch Number drill 620.98 mm0.0386 inch 12 BA 0.051 inch 0.089 inch 90.9 tpi 0.011 inch 0.0378 inch Number drill 601.05 mm0.0413 inch 11 BA 0.059 inch 0.103 inch 81.9 tpi 0.0122 inch 0.0443 inch Number drill 561.2 mm0.0472 inch 10 BA 0.067 inch 0.117 inch 72.6 tpi 0.0138 inch 0.0504 inch Number drill 541.4 mm0.0551 inch 9 BA 0.075 inch 0.131 inch 65.1 tpi 0.0154 inch 0.0565 inch 1.55 mm0.061 inch 8 BA 0.086 inch 0.151 inch 59.1 tpi 0.0169 inch 0.0657 inch Number drill 501.8 mm0.0709 inch 7 BA 0.0982 inch 0.172 inch 52.9 tpi 0.0189 inch 0.0753 inch Number drill 462.05 mm0.0807 inch 6 BA 0.11 inch 0.193 inch 47.9 tpi 0.0209 inch 0.0849 inch 2.3 mm0.0906 inch 5 BA 0.126 inch 0.221 inch 43 tpi 0.0232 inch 0.0981 inch Number drill 372.65 mm0.1043 inch 4 BA 0.1420 inch 0.249 inch 38.5 tpi 0.0260 inch 0.1108 inch Number drill 313 mm0.1181 inch 3 BA 0.1610 inch 0.282 inch 34.8 tpi 0.0287 inch 0.1266 inch Number drill 293.4 mm0.1339 inch 2 BA 0.1850 inch 0.324 inch 31.4 tpi 0.0319 inch 0.1467 inch Number drill 224 mm0.1575 inch 1 BA 0.2090 inch 0.366 inch 28.2 tpi 0.0354 inch 0.1665 inch Number drill 164.5 mm0.1772 inch 0 BA 0.2360 inch 0.413 inch 25.4 tpi 0.0394 inch 0.1887 inch Number drill 95.1 mm0.2008 inch Image is for illustrative purposes only.

0BA x 1.1/2" Socket Screw, Cap Head, High Tensile/ 12.9, DIN 912.

0BA, Cap Head, Socket Screw/ Allen Bolt, High Tensile (12.9), Self Colour

Fixaball sells 0BA x 1.1/2" allen socket, cap head screw/ bolts.

What is a socket cap screw/ bolt?

The, ‘Socket Cap Screw/ Allen Bolt,’ term is uséd to describe a fastener that is either fully or partially threaded. A screw is fully threaded and a bolt is partialy threaded. Some engineers may call them screws if the person uses the shorter length range of sizes. The thread stays the same length as the fastener gets longer and the maximum length of thread is equal to 2.5 times the diameter (or thereabouts). ‘Socket,’ refers to the hexagon shaped indentation found on the top of the fasteners’ head. Here, you can use a hexagon key (Allen Key) to tighten and loosen the fastener. 'Cap' refers to the cylindrical shaped head.

 

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 'No. of Items in Pack', 'Length' and 'Quantity' of packs, selection from the drop down menus.

 

Lengths available: 0BA x 1/2" wedgelock


Material

High Tensile – 12.9 Grade.

BA Threads

BA screw threads, named after the British Association for Advancement of Science, were devised in 1884 and standardised in 1903. Screws were described as "2BA", "4BA" etc., BA threads are specified by British Standard BS 93:1951 "Specification for British Association (B.A.) screw threads with tolerances for sizes 0 B.A. to 16 B.A." They are associated with metric units of measurement. BA threaded products are now made to order, are rare and expensive.

Important BA Thead Information

Screw Numbers

Diameter of Screw 
Over Thread

Head Across Flats

Threads per inch

Pitch

Diameter 
at Thread Bottom

Tapping Drill Size

16 BA

0.0310 inch

0.054 inch

133.3 tpi

0.0075 inch

0.0220 inch

Number drill 73
0.6 mm
0.0236 inch

15 BA

0.035 inch

0.061 inch

120.5 tpi

0.0083 inch

0.025 inch

Number drill 70
0.7 mm
0.0276 inch

14 BA

0.039 inch

0.068 inch

109.9 tpi

0.0091inch

0.028 inch

0.8 mm
0.0315 inch

13 BA

0.047 inch

0.082 inch

102 tpi

0.0098 inch

0.0352 inch

Number drill 62
0.98 mm
0.0386 inch

12 BA

0.051 inch

0.089 inch

90.9 tpi

0.011 inch

0.0378 inch

Number drill 60
1.05 mm
0.0413 inch

11 BA

0.059 inch

0.103 inch

81.9 tpi

0.0122 inch

0.0443 inch

Number drill 56
1.2 mm
0.0472 inch

10 BA

0.067 inch

0.117 inch

72.6 tpi

0.0138 inch

0.0504 inch

Number drill 54
1.4 mm
0.0551 inch

9 BA

0.075 inch

0.131 inch

65.1 tpi

0.0154 inch

0.0565 inch

1.55 mm
0.061 inch

8 BA

0.086 inch

0.151 inch

59.1 tpi

0.0169 inch

0.0657 inch

Number drill 50
1.8 mm
0.0709 inch

7 BA

0.0982 inch

0.172 inch

52.9 tpi

0.0189 inch

0.0753 inch

Number drill 46
2.05 mm
0.0807 inch

6 BA

0.11 inch

0.193 inch

47.9 tpi

0.0209 inch

0.0849 inch

2.3 mm
0.0906 inch

5 BA

0.126 inch

0.221 inch

43 tpi

0.0232 inch

0.0981 inch

Number drill 37
2.65 mm
0.1043 inch

4 BA

0.1420 inch

0.249 inch

38.5 tpi

0.0260 inch

0.1108 inch

Number drill 31
3 mm
0.1181 inch

3 BA

0.1610 inch

0.282 inch

34.8 tpi

0.0287 inch

0.1266 inch

Number drill 29
3.4 mm
0.1339 inch

2 BA

0.1850 inch

0.324 inch

31.4 tpi

0.0319 inch

0.1467 inch

Number drill 22
4 mm
0.1575 inch

1 BA

0.2090 inch

0.366 inch

28.2 tpi

0.0354 inch

0.1665 inch

Number drill 16
4.5 mm
0.1772 inch

0 BA

0.2360 inch

0.413 inch

25.4 tpi

0.0394 inch

0.1887 inch

Number drill 9
5.1 mm
0.2008 inch

 

Image is for illustrative purposes only.

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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.