1.1These test methods cover establishment of procedures for conducting tests to determine the mechanical properties of externally and internally threaded fasteners, washers, direct tension indicators, and rivets.

1.2Property requirements and the applicable tests for their determination are specified in individual product standards. In those instances where the testing requirements are unique or at variance with these standard procedures, the product standard shall specify the controlling testing requirements.

1.3These test methods describe mechanical tests for determining the following properties:

	Section
For Externally Threaded Fasteners:	3
Product Hardness	3.1
Proof Load	3.2.1
Method 1, Length Measurement	3.2.3
Method 2, Yield Strength	3.2.4
Method 3, Uniform Hardness	3.2.5
Axial Tension Testing of Full-Size Product	3.4
Wedge Tension Testing of Full-Size Product	3.5
Tension Testing of Machined Test Specimens	3.6
Total Extension at Fracture Test Single Sheer Test	3.7 3.8
For Internally Threaded Fasteners:	4
Product Hardness	4.1
Proof Load Test	4.2
Cone Proof Load Test	4.3
For Washers and Direct Tension Indicators:	5
Product Hardness-General Requirements	5.1
Through Hardened Washers	5.2
Carburized Washers	5.3
Stainless Steel and Nonferrous Washers	5.4
Direct Tension Indicators	5.5
Compression Load	5.6
For Rivets:	6
Product Hardness	6.1
Test for Embrittlement of Metallic-Coated Externally Threaded Fasteners	7
Test Method for Determining Decarburization and Carburization	8

1.4The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

Note 1-A complete metric companion to Test Methods F606 has been developed-F606M; therefore, no metric equivalents are shown in these test methods.

1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.