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BENEFITS:

•To measure accurate preload, service load and overload of bolted assemblies

•For maximum uniformity, efficiency and reliability in bolted assemblies

•For effective research, testing and manufacturing of bolted assemblies

MECHANICAL SPECIFICATIONS:

Material ...... SAE 4140

Hardness ...... Rockwell C37 to C43

Ultimate Tensile Strength ...... 170,000 psi Minimum

Threads ...... Class 3A, rolled to 1" dia.; Class 2A, rolled 1- 1/8" dia. & larger.

Finish ...... Black Satin Finish

ELECTRICAL SPECIFICATIONS:

Gages Type ...... Metal Foil

Gage Factor ...... 2.00

Service Temperature ...... 150°F or 300°F

Non-Linearity ...... ±1% of Allowable Load

Non-Repetition ...... ±0.1% F.S.

Bridge Resistance ...... 350 or 120 Ohms (Nominal)

Configuration ...... Quarter-Bridge (QB) or Full-Bridge (FB)

Output Signal (nominal, at allowable load) ...... FB: 3.5mv/V, QB: 1.4 mv/V

Excitation ...... 350-ohm FB: 12V (Maximum), 350-ohm QB: 6V (Maximum), 120-ohm FB: 3V (Maximum)

ALLOWABLE LOADS

Allowable loads for Strainsert Hex Head Cap Screws, as tabulated below, are based on approximately 70% Yield Strength of the threads, in pounds.

LOAD CAPACITY LBS:

Screw Dia. 1/4 Fine Threads 2,700 Coarse Threads 2,700

Screw Dia. 5/16 Fine Threads 5,400 Coarse Threads 4,800

Screw Dia. 3/8 Fine Threads 8,200 Coarse Threads 7,200

Screw Dia. 7/16 Fine Threads 11,000 Coarse Threads 10,000

Screw Dia. 1/2 Fine Threads 15,000 Coarse Threads 14,000

Screw Dia. 5/8 Fine Threads 25,000 Coarse Threads 22,000

Screw Dia. 3/4 Fine Threads 36,000 Coarse Threads 32,000

Screw Dia. 7/8 Fine Threads 50,000 Coarse Threads 44,000

Screw Dia. 1 Fine Threads 67,000 Coarse Threads 59,000

Screw Dia. 1-1/8 Fine Threads ---- Coarse Threads 74,000

Screw Dia. 1-1/4 Fine Threads ---- Coarse Threads 92,000

Screw Dia. 1-1/2 Fine Threads ---- Coarse Threads 136,000

Each cap screw is proof-loaded to above indicated load as part of quality control procedure. Both the value of proof-load and mv/V signal obtained are furnished to customer on a no-charge basis. See calibration section for additional calibration certification.