SECTION I IDENTIFICATION AND DESCRIPTION

TB 9-5120-202-35

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification.

This bulletin provides instructions for the

calibration of Torque Wrenches and Torque Screwdrivers (General). The manufacturer's

manual and Federal Specifications, GGG-W-00686C (GSA-FSS) were used as the prime

data sources in compiling these instructions. The equipment being calibrated will be

referred to as the TI (test instrument) throughout this bulletin.

a. Model Variations. Variations among models are described in table 2.

b. Time and Technique. The time required for this calibration is approximately .5

hours, using the physical technique.

2. Forms, Records, and Reports.

a. Forms, records and reports required for calibration personnel at all levels are

prescribed by TB 750-25.

b. Adjustments to be reported are designated (R) at the end of the sentence in which

they appear. When adjustments are in tables, the (R) follows the designated adjustment.

Report only those adjustments made and designated with (R).

3. Calibration Description. TI parameters and performance specifications, which

pertain to this calibration, are listed in table 1.

Table 1. Calibration Description

Test instrument parameters

Performance specifications

Torque wrenches:

Type I, II, and V

Range: 0 to 2000 ft-lb

Accuracy: 4% of nominal reading from 20% of FS to FS

Type III

Accuracy: CW:

Same as Type I and II

6% of nominal reading from 20% of FS

CCW:

Type IV

Accuracy: 5% of setting or as specified below, whichever is

greater from 20% of FS to FS

Size 1: 1/2 in-oz

Size 2: 1/2 in-lb

Torque screwdrivers

Range: 0 to 1600 in-oz and 0 to 100 in-lb.

Accuracy: See appendix A

1No

accuracy requirement from 0 to 20% of scale of wrench.