Abstract

This specification covers the requirements for quenched and tempered alloy steel socket-set screws (SSS). The screws shall be fabricated from alloy steel made to fine grain practice. The screws may be forged, formed, extruded, machined, or ground to meet the dimensional characteristics and performance requirements. The chemical composition of the screw material shall conform to the heat analysis specified. When protective or decorative coatings are applied to the screws, precautions specified by the coating requirements to minimize embrittlement shall be exercised. Chemical analysis, socket strength torque test, hardness test, and decarburization and carburization tests shall be performed to conform to the requirements specified.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers the requirements for quenched and tempered alloy steel socket-set screws (SSS) 0.060 through 2.000-in. sizes having hardnesses 45 to 53 HRC.

1.2 These set screws are intended for compression applications only and are not customarily subjected to embrittlement tests. For tensile applications, consult with the manufacturer for proper alloy and hardness.

1.3 The hazard statement pertains only to the test method section, Section 11 of this specification. This 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.

Note 1A complete metric companion to Specification F 912 has been developedF 912M; therefore, no metric equivalents are shown in this Specification.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

E3 Guide for Preparation of Metallographic Specimens

E112 Test Methods for Determining Average Grain Size

E384 Test Method for Knoop and Vickers Hardness of Materials

F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets

F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series

F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

F2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws and Studs

ASME Standards

Keywords

alloy; set; socket; steel;

ICS Code

ICS Number Code 21.060.10 (Bolts, screws, studs)

DOI: 10.1520/F0912-11

ASTM International is a member of CrossRef.

ASTM F912