Contact Information

Stampings
2550 S 27th Avenue
Broadview, IL 60155 
920-261-2652 
sales@shakeproof.com

Pins
W6331 Bee Rd 
Watertown, WI 53098 
920-261-2652 
sales@shakeproof.com

Lock Washers
3704 N Palmer Rd 
Milwaukee, WI 53212 
920-261-2652 
sales@shakeproof.com

Threaded
W6331 Bee Rd 
Watertown, WI 53098 
920-261-2652 
sales@shakeproof.com

The information below represents ITW Shakeproof Industrial’s threaded product case studies. Please contact us for your specific needs at: This email address is being protected from spambots. You need JavaScript enabled to view it.

BosScrew™ for Bilge Pump

BosScrew™ for Dishwasher Hinge

Our customer’s bilge pumps were leaking due to the plastic thread forming screws backing out.  This caused failures and leaks in their customer’s boat and lead to one boat sinking due to failure of the automatic bilge pump.

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The screw that holds the door hinge to the plastic tub of a dishwasher was coming loose while in use, causing warranty issues with our customer. 

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BosScrew™ Eliminates Leak in Beverage Pump

BosScrew™ for Refrigerator Drawer

The plastic thread forming screw used in beverage pumps would back out of the application while in transit from the manufacturer. This resulted in leaking issues when the pump was installed in a beverage dispenser.

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Customer was looking to change from a steel liner for a refrigerator a plastic liner, but were unable to pass life cycle testing. All plastic thread forming screws tried were failing in the door prior to the 300,000 door slams required of the part.

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BosScrew™ Stops Loosening in Washing Machine Basket

GripTide™ Inserts for Lawn Mowers

Fastener used to assemble motor transmission to the plastic basket in top load washing machine would back out and then break. 

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Brass inserts used to attach a plastic cover to the steel deck of a lawn mower was not passing anti-rotation and pull-out testing needed by our customer.

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Hurricane™ Provides Cost Savings for Washing Machine

Hurricane Rite™ for HVAC Part Consolidation and Performance Improvements

Our customer had a project to reduce the material thickness on their wash machine to .025” to allow for weight reduction and a material cost savings.  They were unable to find a screw that would perform consistently without stripping due to the material thickness.

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Our Customer used 3 different types of sheet metal screws.  Blunt point Type B, 60 degree Type AB and 30 degree sharp tip screws.  Because of UL requirements, Type B screws must be used around wires and do not start well for the line operators. The operators also do not like handling the 30 degree sharp tip screw.   Some of these screws are also causing strip-out problems on the line.  Service technicians are getting scratched by the type AB and 30 degree screws when servicing the furnace.

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Shakeproof™ Thread to Avoid a Costly Patch

Shakeproof™ Thread and MAThread® for Machine Motor

The impeller bolt in a top load washing machine would loosen during use.

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ITW’s customer was using a screw with an adhesive patch to secure their top load washer motor, but the fastener was costly and they were looking for alternatives.

In addition, the customer experienced cross threading issues with the bolt.

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TAP/R® Thread-Rolling Screws for Refrigerator Hinge

TAP/R® Thread-Rolling Screws for Dishwashers

The thread rolling screw that our customer was using to fasten the freezer hinge to a refrigerator would not consistently seat flat which gave a poor appearance to the end user.  As a result, the customer was going to begin tapping the assembly and using a machine screw.

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Customer had issues with using a machine screw in a blind tapped hole in stainless steel due to debris in the threads and cross threading.

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The SEMS preassembled screw and washer is another ITW Shakeproof Industrial invention.

We offer many combinations of tooth lock washers, helical spring lock washers, and conical washers preassembled to machine screws, thread forming, thread cutting, and self-drilling screws. For you specific preassembled needs, please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it..

sems basic type 1
SEMS – External Tooth Lock-Washer:

  • For use when the surface area can be marred
  • Absorbs assembly torque
  • Absorbs assembly torque


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sems basic type 2SEMS – Helical Lock Washer:

  • Meets ASTM specifications
  • Provides resistance to loosening
  • Available in all lock-washer styles


Request a Quote

 

sems basic type 4SEMS – Dished:

  • Allows for more force on soft or thin materials
  • Internal teeth lock into the bolt to prevent back off
  • Helps prevent damage to the surface area


Request a Quote

 

sems basic type 3SEMS – Conical:

  • Doesn’t disturb the surface area
  • Adds spring tension to the joint
  • Distributes load over a wider area

 


Request a Quote

 

square cone 125px
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SEMS – Square Cone®:

This unique Sems fastener features an integral, free-spinning, Square Cone washer.With two distinct configurations, this dual action spring washer has two separate load deflection rates. The configurations act in unison to provide a reliable low-torque, controlled-tension fastener. The Square Cone Sems assembly provides a higher retained clamp load and improved compensation for thermal cycling and vibration. This fastener is capable of accepting a high tension load while maintaining a live spring action and generates a constant load, even with variations in installation torques. By increasing the acceptable driving torque range, it enhances flexibility in component design.

The Square Cone washer's long deflection period and two-stage loading contribute to better control during installation, improve tool bit life and reduce operator fatigue. Load is directed toward the outer diameter of the washer, making the fastener ideal for clamping fragile materials and for spanning large clearance holes.

griptide
griptide logo
GripTide™ Product Details (PDF) 
GripTide™ Advantages (PDF) 
GripTide™ Part Matrix (PDF)
GripTide™ Standards Matrix (PDF)   

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A low cost steel insert for plastics that surpasses brass inserts in quality, cost and performance.

The GripTide insert utilizes cold forming and rolling to give the unique feature to the outside of the insert that ensures the joint simply stays tight.

Problem: “Brass inserts are high in cost and low in performance."

Solution - GripTide™ Inserts: Steel material and manufacturing cost is much lower than brass The unique cold rolled feature creates increased pull out force of the insert and allows for less thread engagement to achieve necessary joint strength.

Benefits:

  • Engineered:
    The GripTide™ insert’s revolutionary pattern integrates with all common installation methods (induction press, conductive, heat staking, insert molding, ultrasonic insertion, and cold press) eliminating the need for multiple designs.
  • Cost Savings:
    The GripTide™ inserts are cold formed, allowing maximum design freedom for flange diameter/bearing surface without the scrap cost associated with typical machined inserts. Custom lengths and GripTide™ stud versions can be manufactured to suit all applications.
  • Security:
    The GripTide™ insert’s multidirectional pattern provides industry leading anti-rotation and pullout performance. In addition, the pattern acts as a stabilizer in the mating material, minimizing “hot float” and improving installation accuracy.
  • Environmental:
    The GripTide™ insert has been optimized for use on induction equipment. During induction, steel heats more efficiently than brass, leading to decreased cycle times, lower capital equipment costs, and reduced energy consumption through the use of smaller units.
griptide anti rotation high pullout griptide photos

Designed for High Performance with Cold-Forming Practicality

Incorporating innovative features that make your components better.

  1. Benefit 1High Torque Resistance / High Pull-Out Resistance:
    GripTide™ multi-directional patterns were designed for maximum resistance to torque and pull-out. Repeated testing has demonstrated remarkable success including a bolt-breaking hold on a variety of plastics.

  2. Benefit 2No Threads? – Won’t Happen!
    Continuous 100% part inspection monitors every insert during all phases of the manufacturing process.

  3. Benefit 3Design Flexibility
    Cold-Forming provides design freedom while maintaining dimensional repeatability.


GripTide™ Parts Matrix:

GripTide Parts Matrix


GripTide™ Standards Matrix:

GripTide Standards Matrix

The SEMS preassembled screw and washer is another ITW Shakeproof Industrial invention.

We offer many combinations of tooth lock washers, helical spring lock washers, and conical washers preassembled to machine screws, thread forming, thread cutting, and self-drilling screws. For you specific preassembled needs, please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it..

sems basic type 1
SEMS – External Tooth Lock-Washer:

  • For use when the surface area can be marred
  • Absorbs assembly torque
  • Absorbs assembly torque


Request a Quote

 

sems basic type 2SEMS – Helical Lock Washer:

  • Meets ASTM specifications
  • Provides resistance to loosening
  • Available in all lock-washer styles


Request a Quote

 

sems basic type 4SEMS – Dished:

  • Allows for more force on soft or thin materials
  • Internal teeth lock into the bolt to prevent back off
  • Helps prevent damage to the surface area


Request a Quote

 

sems basic type 3SEMS – Conical:

  • Doesn’t disturb the surface area
  • Adds spring tension to the joint
  • Distributes load over a wider area

 


Request a Quote

 

square cone 125px
Request a Quote

SEMS – Square Cone®:

This unique Sems fastener features an integral, free-spinning, Square Cone washer.With two distinct configurations, this dual action spring washer has two separate load deflection rates. The configurations act in unison to provide a reliable low-torque, controlled-tension fastener. The Square Cone Sems assembly provides a higher retained clamp load and improved compensation for thermal cycling and vibration. This fastener is capable of accepting a high tension load while maintaining a live spring action and generates a constant load, even with variations in installation torques. By increasing the acceptable driving torque range, it enhances flexibility in component design.

The Square Cone washer's long deflection period and two-stage loading contribute to better control during installation, improve tool bit life and reduce operator fatigue. Load is directed toward the outer diameter of the washer, making the fastener ideal for clamping fragile materials and for spanning large clearance holes.

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