Technical publication No

1 Technologies for a reliable hold Fasteners for metals, plastics, wood and thin sheet metal Ensat . Mubux . B-Lok . S-Lok . Anchor . Clifa . a KerbKonus company Technical publication s s h h re re gt gt tu tu s s en en ail ail ea ea ns ns str str et et io io tf tf rd rd ns ns uc uc ue ue me me he he od od rq rq Ot Ot To To Di Di Pr Pr Threaded inserts from KerbKonus .. B-Lok . Index Page 2 M2 to M8 Expansion insert with medium Page 17. Tested quality Page 3 2-56 to 5/16-18 screw locking effect and 18. Ensat the self-tapping Page 4. threaded insert; installation and 5 S-Lok . M2 to M10 For embedding using high Page 19. Ensat -S 302 and Ensat -SD 303. 2-56 to 5/16-18 ultrasound or mold in to 21. M2 to M30 Self-tapping with very high Page 6 also as threaded 2-56 to 1 cutting slot pin or M2 to M10 As above, but in a very high Page 9 Anchor installation special thin-walled Tools Page 22. version Anchor rivet bushing Ensat -SB 307/308 and Ensat -SBD 347/348. M2 to M16 Standard version high Page 23.

2 4-40 to 5/8-11 Self-tapping with very high Page 7. 2-56 to 5/8-11. or three cutting bores M3 to M10 As above, but in a very high Page 9. Anchor -Mini 4-40 to 3/8-16 special thin-walled version M2 to M8 Weight and space- medium Page 24. 2-56 to 5/16-18 saving Ensat -SBS 337/338 and Ensat -SBT 357/358. Clifa -Press-in nut and stud M2 to M16 Self-tapping with very high Page 8. 4-40 to 5/8-11 three cutting bores Product features and installation instructions Page 25. as chip reservoirs Blind version additio- Clifa -M. nally with closed floor M2 to M10 for metal high Page 26. 2-56 to 3/8-16. Ensat -SI 302 2 and Ensat -SBI 307 2/308 2. M4 to M12 Self-tapping with very high Page 10 Clifa -P. 8-32 to 7/16-14 cutting slot or with M3 to M6 for metal high Page 27. 3 cutting bores and 2-56 to 1/4-20. hexagonal socket Clifa -ABO. Ensat installation . M3 to M5 Press-in standoffs high Page 28. Manual and machine installation Page 11. 4-40 to 10-24 thru-hole thread hexagon head Screw-in tools.

3 Tools 620/621/610/610 2 Page 12 Clifa -ABG. M3 to M5 Press-in standoffs high Page 29. Ensat -SH 309 and Ensat -SHI 309 2. 4-40 to 10-24 blind thread M2,5 to M16 Self-tapping or Page 13 hexagon head 2-56 to 5/8-11 thread forming or hexagonal socket Clifa -SP/-SR/-SPD. M2,5 to M8 for pressing-in flush medium Page 30. T-Lok 846 0/846 1. 3-48 to 5/16-18 to the surface. M2,5 to M8 For embedding using high Page 15 SP coarse teeth 4-40 to 5/16-18 ultrasonic or heat SR fine teeth transmission SPD thin metal Mubux -A Clifa -SA/SAD. M2 to M10 Press-in insert with Page 15 M3 to M10 for high loads drilled high Page 31. 2-56 to 3/8-16 helically knurled and 16 4-40 to 3/8-16. also as threaded locking profile pin 2.. technologies for a reliable hold s ail et rd At our parent plant in Amberg, we produce threaded inserts using efficient production methods. A team of qualified and highly motivated staff guarantees a consistent, high standard of production. The number of products manufactured over the company's history reaches into the billions.

4 State-of-the-art automation lines manufacture around the clock in a precise and high standard of quality. The efficient and low-cost production of large-scale product series is one of the strenghts on which we have based our success. What really counts: But our high-volume production output in tested quality. no way compromises flexibility. We are able to quickly and efficiently produce even small batches of nonstandard items. Our state of the art stock control system permits the reliable, prompt delivery of standard products, keeping your pro- duction running to schedule at all times and helping to minimize your ware- housing costs. We are particularly proud of a cost-to- performance ratio which ensures satisfied customers the world over. This has made KerbKonus a reputable and respected partner to industry in the global market- place. Quality and environment are top priority issues at KerbKonus. Quality conscious- ness is a continuous thread running through every aspect of the company's work and all its products and services.

5 KRA. C e r tifica tio Quality is lived and breathed at Kerb- DE n Konus. As manufacturer in the metal processing ze r ti fi z i e r t industry we are aware of our responsibi- lity for an environmentally compatible Quality System production. With this in mind we follow Dekra Certificate in accordance with up a policy of sensible resource spending ISO 9001:2008 30507428/1 and environmental friendly production ISO/TS 16949:2009 160507011/1 both in our process engineering and our ISO 14001:2004 170507049/1 product range. 3. The Ensat . self-tapping threaded insert . Ensat is a self-tapping threaded Ensat -3F 305 is a thread forming in- below: Ensat with closed floor: Works insert with external and internal sert with 3 longitudinal grooves around Standard 357/358 Dimensions: See threads, cutting slots or cutting bores. ist periphery. Works Standard 307/308 (see page 7). A continuous process of further development has brought about a num- ber of major improvements to product Fields of application Product features characteristics.

6 These inserts are protected by German and also foreign The Ensat is used throughout the entire The Ensat has a large effective she- patents. metal and plastics processing industry. aring surface (E B), so ensuring a higher degree of pull-out strength, Ensat -S 302 Automotive industry, passenger an Ensat M4 is often sufficient (with cutting slot) is recommended for and commercial vehicles instead of a cut M5 thread. most application cases. In certain mate- Engines, transmissions, wide range of rials, this Ensat demonstates a minimal supply parts such as side view mirrors, The Ensat is driven subsequently into inward springing action, so creating a radiators, bumpers etc. the finished workpiece. This means a certain screw locking effect. If this effect higher casting machine output, no is not required, we recommend using Plant and equipment construction rejects due to incorrectly cast-in in- Ensat-SB 307/308. Flange joints, construction equipment, sert components, no molding sand oil burners etc.

7 Trapped in the thread. Ensat -SB 307/308. (with cutting bores) was developed for Household appliance and office A pre-cast or pre-drilled retaining materials with difficult cutting proper- machinery production hole with normal tolerance require- ties. This insert has a thick wall and the Vacuum cleaners, cameras, sun lamps, ments is sufficient for driving in the cutting force is distributed over three drills etc. Ensat. The thread is always precisely cutting edges. positioned. The short version Ensat 307 is particu- Electrical and laboratory supplies larly suitable where minimal material Capacitors, heavy current, radio and The work steps required with wire thicknesses are involved. telecommunication systems, dental inserts thread tapping, breaking technology equipment. off trunnions etc. as well as costly Thin-walled Ensat -SD/SBD wearing tools (special thread drills, for applications involving special space Military applications limit plug gauges etc.) are not conditions (residual wall thicknesses), Tanks, aircraft etc.

8 Required with the Ensat-system. and also suitable for driving using a thread tapping machine (same internal The Ensat is insensitive to small 3 chip reservoirs and external thread pitch). around the periphery areas of shrinkage. The Ensat-system Slot version: Works Standard 303 Three- prevents damage caused by torn hole version: Works Standard 347/348 threads. (see page 9). Universal application for all types of Ensat -SBS 337/338 plastic, thermoset plastics, thermo- with three chip reservoirs. Used plastics, PU/PUR foam, fiberglass primarily wherever only a small amount reinforced plastics, for hardwood and of chips may be permitted to occur du- plywood, particle board and metal. ring the tapping process (see page 8). Ensat -SBS 337/338 Maximum strength values in compa- Ensat -SBT These cutting bores are shaped to serve rison to other systems. The diagram with closed floor for additional as chip reservoirs. The chips created du- illustrates the withdrawing force in sealing from below.

9 Works Standard ring the diving process are stored here thermoplastic materials: In thermoset 357/358. Dimensions: see Works Stan- and cannot drop into sensitive equip- plastics and glass fiber reinforced dard 337/338 (see page 8). ment parts. For additional sealing from plastics, the values tend to be higher. 4.. technologies for a reliable hold The Ensat . in the workpiece .. Installation recommendation The Ensat should be processed approx. recessed. After pro- cessing, the Ensat can be immediately subjected to load. If the component material permits subsidence of the Ensat under load, the Ensat can only execute an axial movement of to In other words, the pretension of the screw union is largely retained, loosening of the screw connection under dynamic load is impeded. Retaining hole The retaining hole can be simply drilled or already provided for in the casting. Borehole diameter: Example: It is generally not necessary to counter- Brittle, tough and hard materials call for sink the hole.

10 However, we do recom- a larger borehole than soft or elastic Female thread 5/16-18, recommended mend that you take care not to warp materials. For guideline values, see the Borehole diameter for: the workpiece surface when screwing in table above. the Ensat. Light alloy workpiece (Rm=280N/mm ), Edge distance: Ensat -S 302: to Material thickness: The smallest still admissible edge Ensat -SB 307/308: to Length of the Ensat = smallest distance depends on the planned stress admissible material thickness M. level and the elasticity of the material Plastic workpiece into which the Ensat is installed. Ensat -S 302: to Depth of the blind hole: Ensat -SB 307/308: to Minimum depth -T see Works Standard Sinking the receiving hole sheets, page 6 to 13. For a clean fit of the Ensat flush with In case of processing problems ( the surface, the following injection or extreme screw-in torque levels), it is pressed hole form is recommended: generally of no consequence to choose Chamfer soft to medium-hard plastics a higher bore diameter.