ASTM F116

This specification covers the acceptable material and dimensional requirements, and tolerances for bits of screwdrivers used for inserting and removing metal screws applied in surgical implants. The medical screwdrivers are available in the following types: Type I—single-slot bit; Type II—cruciate-slot bit; Type III—cross-slot (modified Phillips) bit; Type IV—hexagonal bit; Type V—square bit; Type VI—hexalobe bit. The bit and shaft portion should be fabricated from either martensitic stainless steel or cold worked cobalt-chromium-tungsten-nickel alloy, as specified. The portions should also meet specified values of Rockwell hardness.

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 acceptable dimensions and tolerances for bits of screwdrivers to insert and remove metal screws used as surgical implants.

1.2 This specification is based, in part, upon ISO 8319–1 and ISO 8319–2.

1.3 The screwdrivers with the bits described in this specification are suitable for use with screws described in Specification F 543, ISO 5835, and ISO 9268.

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

1.5 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.

2. Referenced Documents

ASTM Standards
E18 Test Methods for Rockwell Hardness of Metallic Materials
F1744 Guide for Care and Handling of Stainless Steel Surgical Instruments
F543 Specification and Test Methods for Metallic Medical Bone Screws
F565 Practice for Care and Handling of Orthopedic Implants and Instruments
F899 Specification for Wrought Stainless Steels for Surgical Instruments
F90 Specification for Wrought Cobalt-20Chromium-15Tungsten-10Nickel Alloy for Surgical Implant Applications (UNS R30605)
ISO Standards
ISO9268 Implants for Surgery--Metal Bone Screws with Conical Under-Surface of Head--Dimensions

Index Terms

bone screw; orthopaedic medical devices; screwdriver; surgical instruments; Medical devices/equipment; Orthopaedic medical devices--specifications; Orthopaedic medical devices (bone)--specifications; Orthopaedic medical devices (bone screws); Screwdriver bits; Surgical instruments--specifications; ICS Number Code 11.040.30 (Surgical instruments and materials)

Citing ASTM Standards

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