FOCUS ON NUTS, WASHERS & LOCKING SYSTEMS self locking nuts
Aerotight Manufacturing Aerotight®
all-metal
. The nut is available in most thread forms, including Metric, UNC, UNF, BA, BSW and BSF. Customer specials - for example thin types - are available to order. Aerotight Manufacturing is part of the Apex Stainless Fasteners Organisation.
Aerotight Manufacturing offers the time-proven solution to vibration problems. The Aerotight nut has built a reputation for quality and reliability over many years, with a well-proven design that has become established throughout industry. It is the leading all-metal stainless steel self-locking nut and is also available in brass, aluminium or steel. There are no vulnerable inserts to be affected by heat or oil and it is re-useable, with the self-locking function remaining effective. In both its steel and stainless forms it can be used up to 300°C. The Aerotight nut will remain in position whether tightened down or not, providing the locking element is engaged, and does not have to achieve recommended torque to be effective. No additional parts are required for the Aerotight to function so no special tools are needed. All stainless steel bar used in the manufacture of the M5 to M20 range achieves an ultimate tensile strength of 700N/ mm2
Bülte FLAT ANTI-LOSS WASHERS NEW DIMENSIONS
Don’t lose your washers during assembly
Our washer can easily be slid onto the thread where it is retained by the specially designed lips, helping to speed up, and reduce the cost of assembly.
“Flat”: the thickness of the washer varies from 0.5 to 1.0 mm. “Anti-loss”: to remove the washer from the screw you will have to unscrew the screw from the washer.
It will be necessary to use the clearance hole sizes indicated in the catalogue in order to be certain of total locking and sealing.
Flat anti-loss washers are available in the following sizes: M10, M12 and M16 + “New”: M5, M6, M8. The standard material is natural nylon (Polyamide). Nylon washers insulate against moisture and electricity and resist corrosion, abrasion and most chemicals. These washers can also be manufactured in other materials such as: PE, PP, POM, black Nylon… and feed quality or more flexible on request.
Tel: +44 (0) 1788 537 979
www.apexstainless.com
www.bulte.com
email:
bulte@bulte.com
DS Fasteners
Stover Nuts • Nylon Insert Nuts Cleveloc Nuts • Castle Nuts Phillidas • Vargal HDG • Stainless Steel
DS Fasteners Products Ltd was established in 1976 as a specialist self locking nut supplier.
Fabory Flange Bolts Serrated Flange Bolts
We set out to stock a large range of the more unusual sizes and pitches with the emphasis on higher grades also. This allows us to reduce lead times and get orders delivered quicker. Our main stock items are the Stover nut (DIN 980V), Nylocs (DIN 985/982) and also Flange nuts (plain & serrated) and Stover Flange (DIN 6927) Nyloc Flange (DIN 6926). These are available in most finishes and in Grades 8, 10, 12. (Metric & imperial). To further compliment the range we also stock Serrated Flange Bolts (DIN 6921) in a range of sizes. We are also increasing our stock of Stainless Steel (A2 & A4) parts again in the fine pitch and the more unusual sizes. Recently added to the stock is a range of Philidas nuts. We have also added Hot Dipped Galvanized Nylocs to our range. If it’s a locking nut you require, with our knowledge and stock we are sure to be able to help.
Locking with confidence For locking a threaded joint, engineers make use of products that can be grouped according to the cause of possible loosening and their intended action. If the problem concerns only embedding and creep then products such as conical spring DIN 6796, 2093 and NFE contact washers can compensate for the reduced clamping length. In case of self-loosening as a result of internal loosening torque and transversal displacements, prevailing torque nuts with nylon insert DIN 985, 982, 6926, all metal DIN 980, 6925 and SNEP are applied, having the advantage to lock against loss and the disadvantage that they do not secure clamping force. Additionally, other categories of locking products are needed to lock successfully against rotation, including: • Flanged bolts/nuts with Tensilock and Ripp serrations • Some types of adhesives • Nord-Lock and Schnorr washers. All of the above items belong to FABORY’S product range. FABORY, international fasteners and tools distributor, boasts over 100,000 items enabling customers to adopt whatever locking solution is necessary.
For further enquiries, or to request a copy of FABORY’S technical brochure Locking Confidence In Threaded Joints, please contact:
Tel: +44 (0) 1842 763 000
www.dsfasteners.co.uk Tel: +44 (0) 121 556 3474 email:
sales.faboryuk@fabory.com
98 Fastener + Fixing Magazine • Issue 72 November 2011
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