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  • Strainsert Custom Bolt Questionnaire
  • Force Sensing Bolt & Studs
Many Uses and Applications
  • Measurement of Preload in Critical Assemblies
  • Inspection of Preload after Assembly, Shipping, Prior to Use
  • Provides Overload Detection Resulting from External Loading
  • Used as Measurement Tool During Actual / Simulated Service Conditions (Shock, Vibration, Gasket / Joint Relaxation, etc.)
  • Feedback to Control Systems
  • Provides for Direct Analysis of Components Under Investigation.


Superior Technical Features
  • Small installation holes allow for greater load carrying capability
  • Measurement Accuracy (<1% F.S., Typically.)
  • Gage Installations are Two Patterns in Series, 180° Apart in Small Holes (Minimizes Errors Due to Bending and Torque)
  • Quarter-Bridge and Full-Bridge Gage Installations with Ratings Up to 300° F Years of Experience Gaging Aircraft Quality Bolts and Many Other Types of Common and State of the Art Materials (MP 35N, Inconel, Monel, A286, Titanium, etc.)
To complete Bolt Questionnaire please click the Request Information button, for Customer Supplied Bolts.
Unit of Measure

View items

Item #

     Quantity

Bolt Type 

     Bolt Type

     Bolt Material

     Ult. Tensile Strength

     Yield Strength

Measurement Capacity

Bolt Geometry

     Bolt Diameter

     Bolt Length

     Grip Length

     Thread Length

     Thread Designation

Height Restriction

Electrical Termination

     Connector

     Permanently Attached Cable

     Header Termination

Electrical Specification

Gage Installation

Max. Operating Temperature

Special Options (available on a case by case basis)

     Temperature Compensation

     Signal Trim to common full scale output

     Outgassing Restriction

General Information
N/A N/A N/A 12-PT Hex Head Socket Head Spline N/A A286 Inconel 718 MP35N N/A N/A N/A N/A   N/A N/A N/A N/A N/A N/A None N/A   N/A 4-Pin (7/8" diameter and larger) Miniature N/A N/A Lead Wire < 3/8" diameter Tab Type ≥ 3/8" diameter N/A   N/A 120Ω 350Ω (Standard) Full Bridge (Standard) Quarter Bridge N/A 150°F 300°F[max) N/A   N/A 150°F 300°F N/A No Yes N/A No Yes N/A
In addition, to our Strainsert Standard Hex Head, 12-Point Bolts, and Studs, Strainsert also manufactures many custom force sensing fasteners tailored for unique applications, installations, and special requirements. These may include customer provided fasteners, modifications to common fasteners, or new designs.

The internally gaged bolts and studs (invented by Strainsert, U.S. Patent No. 2,873,341) are designed to accurately measure fastener tensile forces. Compression designs can also be provided.

The instrumented fasteners allow direct, accurate, and repeatable force measurements from 1/4” diameter to over 4” diameter in all types of fasteners and materials.