References. Original SCHNORR safety washers.

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Bolt Locking Systems References Original

Mowing machine The original SCHNORR safety

economic bolt locking device with the basic

This ingenious form combines the advantage of

world wide where secure fastening connections

1 Bolt Locking Systems References Original SCHNORR safety washers. Mowing machine The original SCHNORR safety washers were developed as a reliable and economic bolt locking device with the basic principle of a disc spring. This ingenious form combines the advantage of security through friction and mechanical locking. Original SCHNORR safety washers are now used world wide where secure fastening connections to counter the effect of vibration are required. Heavy-duty crane Applications are manifold, from automotive engineering to machine, aggregate and plant engineering. SCHNORR safety washers are used, for example, in mowing machines, textile machines, machine tools and a lot of other applications Motorbike Phtotovoltaics 27

Die original SCHNORR safety washer Offer the following advantages: 1 High resistance to vibration due to positive locking of the serrations 2 Concentrical force transmission and uniform axial load

4 Extremely high safety against loss of pretension force and loosening.

2 Die original SCHNORR safety washer Offer the following advantages: 1 High resistance to vibration due to positive locking of the serrations 2 Concentrical force transmission and uniform axial load eliminate bending torques and deformation of the bolt stem 3 The design of the serrations prevents friction and damage to components when tightening. 4 Extremely high safety against loss of pretension force and loosening. The original SCHNORR safety washers are in the form of a disc spring but with a trapezoidal cross-section and serrations on both sides. The outer diameter is matched to the head diameter of the pan head and socket head cap screws. SCHNORR safety washers are available in two versions: The standard safety washer type S is available for screws of sizes M1.6 to M36 and of the property classes up to 8.8. For screws of property classes 8.8 an.9, higher pretension forces might be necessary. These are covered by our reinforced washers type VS. Due to the conical form, optimal traction is achieved at highest positive locking due to the helical gearing. Positive connection and positive fit = double safety 5 Wide variety for materials and different finishes. 6 The closed ring form results in high degree of pretensioning, while avoiding burst-open effect. 1. Loading and Unloading 2. Loading and Unloading + Positive connection = Positive fit Original SCHNORR safety washer Vibration test according to DIN Vibration test according to DIN (F V-,2%-minimum yield point = 37,1 kn) 1 F v /F V-,2%-minimum yield point [%] % pretension force with SCHNORR safety washer 1 % pretension force without SCHNORR safety washer Screw: M1 x (DIN 931) - mech. Zn Nut: M1-8 (DIN 934) - mech. Zn SCHNORR SAFETY WASHER: VS1 - MECH.ZN Number of stress cycles [N] Extensive test series carried out at independent public material research laboratories prove that the original SCHNORR safety washer brings about a clear improvement of the safety properties 7 Development and design of the washers take place on the basis of the screw geometrics, tightening torque as well as the constructive circumstances Conclusions tension force also after 1,5 cycles. than 5 cycles. 28

3 Original SCHNORR safety washer type S h The Original SCHNORR safety washer S is suitable for normal requirements and available for bolt sizes from M 1,6 to M 36 in grades up to 8.8. Please enquire should you require an item with different dimensions, material or surface treatment. Explanations on the table: Article-no.: applies to the normal version made of spring steel, hardened, blackened; mechanically plate : maximum dimension as delivered h min.: minimum dimension after load test Available material gra.: spring steel acc. to DIN EN ; corrosion-resistant steel 1.431; Phosphorus Bronze CuSn8; nickel cobalt alloy; creep-resistant steel ; Inconel Surface treatments: blackened (standard), bronzed, phosphated, zinc-coated, zinc lamellar coatings s Sketch of an original SCHNORR safety washer type S : Size 8 made of spring steel = safety washer S 8 FSt. Original SCHNORR safety washers type S material C6S (1.1211) 423 blackened 45 Gal.Zn8 + passivation 44 4 blackened 45 1 Gal.Zn8 + passivation 46 8 blackened 45 2 Gal.Zn8 + passivation 49 4 blackened 45 3 Gal.Zn8 + passivation blackened 45 4 Gal.Zn8 + passivation blackened 45 5 Zn8M + passivation blackened 45 6 Zn8M + passivation blackened 45 7 Zn8M + passivation blackened 45 8 Zn8M + passivation blackened 45 9 Zn8M + passivation 42 4 blackened 451 Zn8M + passivation 423 blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation 43 7 blackened Zn8M + passivation Finish Size ing dimensions Packaging Nominal size 1,6 1,7 3,2,35,4,6 2,13 2, 2,2 4,,35,4,6 2,21 2,5 2,7 4,8,45,5,9 2,39 3, 1/8 3,2 5,5,45,5,9 2,49 3,5 3,7 6,,5,55,9 2,55 4, 5/32 4,3 7,,5,55 1, 1,85 5, 3/16 5,3 9,,6,6 1,1 1,167 6, 6,4 1,,6,7 1,2 1,2 6,35 1/4 6,7 9,5,6,65 1,2 1,15 7, 7,4 12,,7,8 1,3 1,355 8, 5/16 8,4 13,,7,9 1,4 1,392 1, 3/8 1,5 16,,9 1,1 1,6 1,75 11,1 7/16 11,6 15,9,9 1,5 1,6 5,595 12, 13, 18, 1, 1,15 1,7 5,879 12,7 1/2 13,7 19, 1, 1,25 1,8 5,976 14, 15, 22, 1,1 1,35 2, 5 1,641 16, 5/8 17, 24, 1,2 1,55 2,1 5 1, Bolt Locking Systems

4 Original SCHNORR safety washers type S material C6S (1.1211) blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation blackened 452 Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation 44 3 blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation Finish Size ing dimensions Packaging Nominal size 18 19, 27 1,4 1,75 2,3 25 2, /4 2, 3 1,4 1,9 2,5 25 4,1 2 21, 3 1,4 1,85 2,5 25 3, /8 23, 33 1,4 1,95 2,7 1 4, ,6 36 1,6 2,15 2,9 1 5,91 25,4 1 27, 38 1,8 2,35 3,1 1 7, ,6 39 1,8 2,35 3,1 1 7, /8 31,6 45 1,8 2,6 3,6 1 1, /8 38, 54 2,5 3,2 4,2 5 21,28 We would be glad to offer you safety washers type S with different finish on request. Our surfaces are Cr 6-free and comply with the EU Old Car (2/53/EG) RoHS-(22/95/CE) Directive as well as the WEEE Directive (22/96/EC) 3 Original SCHNORR safety washers type S material X5CrNi18-1 (1.431) Size ing dimensions Packaging Nominal size ,6 1,7 3,2,5,55,75 1, ,2 4,,5,55,75 2, ,5 2,7 4,8,5,55,95 2, /8 3,2 5,5,5,55,95 2, ,5 3,7 6,,7,75 1,15 2, /32 4,3 7,,7,75 1,2 1, /16 5,3 9,,7,75 1,2 1, ,4 1,,7,75 1,2 1, ,35 1/4 6,7 9,5,7,75 1,2 1, /16 8,4 13, 1, 1,2 1,6 1, /8 1,5 16, 1, 1,1 1,6 1, ,1 7/16 11,6 15,9 1,3 1,3 1,85 5, , 18, 1,3 1,3 1,85 5 1, ,7 1/2 13,7 19, 1,3 1,4 1,95 5 1, , 22, 1,5 1,65 2,3 5 2, /8 17, 24, 1,5 1,75 2,3 5 2, , 27, 1,8 2,5 2,6 25 3, /4 2, 3, 1,8 2,2 2,6 25 5, , 3, 1,8 2,15 2,8 25 3, /8 23, 33, 1,8 2,3 3, 1 5, ,6 36, 2, 2,35 3,1 1 7, ,4 1 27, 38, 2,5 2,85 3,6 1 1, ,6 39, 2,5 2,85 3,6 1 1, /8 31,6 45, 2,5 3,1 4,1 1 15, /8 38, 54, 3, 3,7 4,7 1 26,218 We would be glad to offer you safety washers type S in further special material grades on request.

5 Original SCHNORR safety washers type VS The Original SCHNORR Safety Washer VS can be used with high-strength bolts of the grade 1.9 without any restrictions. This very strong safety washer has a greater thickness for higher pre-tensioning loads. The outside and inside diameters as well and the serrations are the same as the S type. It can be delivered for screws M 5 to M 3. Special sizes, materials and surfaces are also available upon request. h Explanations on the table: Article-no.: applies to the normal version made of spring steel, hardened, blackened; mechanically plated : maximum dimension in delivery condition h min.: minimum dimension after load test Available material grad.: spring steel acc. to DIN EN ; corrosion-resistant steel 1.431; Phosphorus Bronze CuSn8; nickel cobalt alloy, creep-resistant steel ; Inconel Available surfaces: blackened (standard), bronzed, phosphated, zinc-coated, zinc lamellar coatings s Designation of an original SCHNORR safety washer type VS : Size 16 made of spring steel, surface mechanically plated = safety washer VS 16 FSt. for 8 M + passivation Original SCHNORR safety washers type VS material C6S (1.1211) blackened Zn8M + passivation blackened Zn8M + passivation 42 5 blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation 43 8 blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation blackened Zn8M + passivation 438 blackened Zn8M + passivation blackened Zn8M + passivation 44 4 blackened Zn8M +passivation blackened Zn8M + passivation blackened Zn8M + passivation Finish Size ing dimensions Packaging Nominal size 5 3/16 5,3 9,,9,95 1,3 1, ,4 1,,9,95 1,4 1,3 8 5/16 8,4 13, 1,1 1,15 1,7 1, /8 1,5 16, 1,4 1,5 2, 1 1, , 18, 1,4 1,55 2,1 5 1, , 22, 1,4 1,65 2,2 5 2, /8 17, 24, 1,9 2,5 2,6 25 3, , 27, 1,9 2,15 2,7 25 4, , 3, 1,9 2,1 2,8 25 5, /8 23, 33, 1,9 2,3 3, 1 6, ,6 36, 2,4 2,7 3,4 1 8,865 25,4 1 27, 38, 2,4 2,95 3,4 1 1, ,6 39, 2,4 2,8 3,5 1 9, /8 31,6 45, 2,4 3,5 3,8 1 14, /8 38, 54, 3, 3,75 4,5 5 27,226 We would be glad to offer you safety washers type VS with different finish on request. Our surfaces are Cr 6-free and comply with the EU Old Car (2/53/EG) RoHS-(22/95/CE) Directive as well as the WEEE Directive (22/96/EC) Bolt Locking Systems 31

416 21 5 3/16 5,3 9, 1, 1,5 1,3 1,298 4181 6 6,4 1, 1, 1,1 1,4 1,33 422 91 8 5/16 8,4 13, 1,5 1,6 2, 1,836 425 2 1 3/8 1,5 16, 1,8 1,9 2,3 1 1,51 427 7 12 13, 18, 1,8 1,9 2,4 5 1,731 43 66 14 15, 22,

6 Original SCHNORR safety washers type VS material X5CrNi18-1 (1.431) Size ing dimensions Packaging Nominal size We would be glad to offer you safety washers type VS in further special material grades on request /16 5,3 9, 1, 1,5 1,3 1, ,4 1, 1, 1,1 1,4 1, /16 8,4 13, 1,5 1,6 2, 1, /8 1,5 16, 1,8 1,9 2,3 1 1, , 18, 1,8 1,9 2,4 5 1, , 22, 1,8 1,95 2,5 5 2, /8 17, 24, 2,5 2,6 3,1 25 4, , 27, 2,5 2,65 3,2 25 5, , 3, 2,5 2,7 3,3 25 6, , 33, 2,5 2,7 3,4 1 8, ,6 36, 3, 3,2 3,9 1 11, ,6 39, 3, 3,3 4, 1 12, /8 31,6 45, 3, 3,55 4,3 1 18,222 Vibration test according to DIN Product comparison Original SCHNORR Safety Washers with other bolt locking systems clamping force (kn) Original SCHNORR safety washer Wedge locking washer Split lock washer Detent-Edged washer Ripped washer Spring washer number of stress cycles Original SCHNORR safety washers UV captive fitting on bolts For screws with captive safety washers These safety washers are dimensioned so they can be fitted to bolts or screws from M2.5 to M1. This is done prior to thread rolling so the safety washers are captive. 32

SCHNORR Product range

SCHNORR Product range Disc springs Bolt locking systems DISC SPRING ENGINEERING DISC SPRING ENGINEERING Grown competence for highest precision. Adolf Schnorr, who founded our business in 1908, showed true