Torque Comparison

   In/pounds= nm/.112985

Project number 3018 99-07600
Date: March 3, 1999
MAXIM TECHNOLOGIES, INC.
662 Cromwell Avenue
St. Paul, Minnesota 55114

Project: Torque Testing 
Client Purchase Order Number: Verbal
Prepared By: Scott W. Britzius Project Engineer/Experimental Mechanics Mechanical Engineering Department
Reviewed By: Richard S. Alberg Manager Mechanical Engineering Department
Phone: (651) 659-7307
"An Affirmative Action, Equal Opportunity Employer"

The test results contained in this report pertain only to the samples submitted for testing and not necessarily to all similar products.

Comparison Performance Torque Testing

INTRODUCTION:
This report presents the results of comparison performance tests conducted on T-Handle Hex wrenches produced by three manufacturers. The testing was requested on March 3, 1999 by Mr Mike Blackston of the Bondhus Corporation.

The scope of work was limited to purchasing the two competitor brand of wrenches directly from an industrial distributor. Determining the torque required to fracture (break) the three manufacturers wrenches and to provide a report of the results.

SUMMARY OF RESULTS:
Average Torque to Fracture (break) Off Wrench, in-lb

SAMPLE IDENTIFICATION:

T-Handle style Hex Wrenches. The Bondhus® wrenches were submitted on 3-4-99. Maxim Technologies purchased from MSC Industrial Supply Company, five (5) wrench sets of: ALLEN -Cushion Grip P/N 75043513 and EKLIND - Wire Form P/N 05044516 under our Purchase Order number 52205 dated 3-10-99. The wrenches were received at our facility via UPS on 3-12-99. The wrench sizes, shank length and T-handle dimensions are listed on the following page.

Wrench Dimensions, inches 
Shank Length - Handle Width / Diameter

TEST METHODS:

The size, shank length, handle width and diameter of the wrenches were documented. The torque testing was conducted by placing the shank of the wrench into the matching size of a hex driver socket attached to a 2,000 in-lb torque transducer. The handle of the wrenches were rotated in the clockwise direction using a fixture (see drawing on page 6) designed to contact the handle with two (2), 3/8" diameters on opposite sides, at the span of; 2" for the 5/23" - 3/32" wrenches and 2-1/2" for the 1/4" - 3/16" wrenches. The wrenches were torqued until either the shank fractured (broke), spun loose in the handle or handle deformation caused loss of contact with the torque fixture. The indicated maximum peak torque and mode of break were documented for the wrenches.

TEST EQUIPMENT:

Lebow 2000.0 in-lb torque transducer, MTI# MM 120-002, calibrated traceable to the NIST on 2-3-98 due 2-3-00.

TEST DATA:

Torque to Break Wrench, in-lb. Mode of Failure (see below)

1/4" Wrench size

7/32" Wrench size

3/16" Wrench size

5/32" Wrench size

Mode of Failure:
Bondhus and Allen - the shank of the wrenches twisted into a spiral and then fractured.

Eklind - the wire handles deformed resulting in loss of contact with the torque fixture. Twisting and bending of the shanks also occurred during torquing, but no shank fractures occurred.

TEST DATA: (cont')
Torque to Break Wrench, in-lb.Mode of Failure (see below)

9/64" Wrench size

1/8" Wrench size

7/64" Wrench size

3/32" Wrench size

Mode of Failure:
Bondhus and Allen - the shank of the wrenches twisted into a spiral and then fractured.

Eklind - the wire handles deformed resulting in loss of contact with the torque fixture. Twisting and bending of the shanks also occurred during torquing, but no shank fractures occurred.

REMARKS:
The wrenches will be retained for thirty days then discarded unless otherwise notified.

Torque Comparison

Project number 3018 99-05234
Date: January 29, 1999
MAXIM TECHNOLOGIES, INC.
662 Cromwell Avenue
St. Paul, Minnesota 55114

Project: Torque Testing 
Client Purchase Order Number: Verbal
Prepared By: Scott W. Britzius Project Engineer/Experimental Mechanics Mechanical Engineering Department
Reviewed By: Richard S. Alberg Manager Mechanical Engineering Department
Phone: (651) 659-7307
"An Affirmative Action, Equal Opportunity Employer"

The test results contained in this report pertain only to the samples submitted for testing and not necessarily to all similar products.

Comparison Performance Testing

INTRODUCTION:
This report presents the results of comparison performance tests conducted on eight specified sizes of hex wrenches produced by three manufacturers. The testing was requested on January 4, 1999 by Mr. Mike Blackston of the Bondhus Corporation.
The scope of work was limited to purchasing the hex wrenches directly from an industrial distributor, determining the torque to fracture (twist off) the wrenches and providing a report of the results. The testing was completed on January 27, 1998.

SUMMARY OF RESULTS:
Average Torque to Fracture (break) Off Wrench, in-lb

MANUFACTURER

SAMPLE IDENTIFICATION

Ball End style hex wrenches purchased from MSC Industrial Supply Co. under Maxim Technologies purchase order number 51345 on 1-14-99 and shipped to our facility by UPS. Five (5) wrenches each in the size and leg lengths listed below were purchased.

SAMPLE IDENTIFICATION:

TEST METHODS:

The size, leg lengths and end styles of the wrenches purchased were documented. The torque testing was conducted by placing the shorter leg of the wrench 3/16" into the matching size of a hex driver socket. The hex socket was attached to a 2,000.0 in-lb torque transducer. To obtain the required leverage to stress the wrench, an extension arm (pipe) was placed over the longer leg to terminating 1 inch from 90° bend. The wrenches were then torqued clockwise until the wrench fractured (broke) off. The indicated maximum peak torque and location of break were documented for each wrench.

TEST EQUIPMENT:

Lebow 2K in-lb torque transducer, MTI# MM 120-002, calibrated traceable to the NIST on 2-3-98 due 2-3-00.

TEST DATA:

Torque to fracture (break) off wrench, in-lb.

1/16" Wrench size

5/32" Wrench size

1/4"Wrench size

5/16"Wrench size

In all cases the wrenches broke at the start of the socket driver with permanent twisting of the shorted leg occurred prior to breaking.

TEST DATA:(cont')

Torque to fracture (break) off wrench, in-lb.

1.5 mm Wrench size

4 mm Wrench size

6 mm Wrench size

8 mm Wrench size

In all cases the wrenches broke at the start of the socket driver with permanent twisting of the shorted leg occurred prior to breaking.

REMARKS:

The wrenches will be retained for thirty days than discarded.

2mm Strength Demonstration

The strength of a Bondhus® hex key was tested against that of a competitor. The tools were inserted into the solid receptacle and then turned in opposite directions until one of the tools broke.

As test results below show, while the Bondhus® tool suffered no damage, the competitor's tool was twisted, deformed, and broken.

Salt Spray Testing

Date: December 30, 2024

ELEMENT MATERIALS TECHNOLOGY

662 Cromwell Avenue

St. Paul, MN

Author: Jim Clark

Report Number: ESP043536P.1R2

INTRODUCTION:

This report presents the results of salt spray test conducted on three samples. Nick Marchuk of Bondhus Corporation submitted the samples on December 10, 2024

OBJECTIVE:

The scope of work was limited to conducting a 20-hour salt spray exposure test in accordance with ASTM B117-19 on the samples submitted and providing a report of the results. The exposure was completed on December 24, 2024.

SAMPLE IDENTIFICATION:

see photos below

CONCLUSIONS:

see photos below

TEST METHOD:

The test exposure was conducted in accordance with ASTM B117-19. The samples were exposed for the duration of the 20-hour exposure in Auto Technologies Salt Spray Chamber no. 5 Asst # PT 165-034 (calibrated 03-05-2024, due 03-05-2025) under the following conditions:

PHOTOGRAPHS: