ASTM F544-92

Reference Chart for Pictorial Cortical Bone Screw Classification (Withdrawn 1998)

General Information

• Status: Withdrawn
• Withdrawal Date: 09-Oct-1998
• ICS: 11.040.40 - Implants for surgery, prosthetics and orthotics
• Technical Committee: F04 - Medical and Surgical Materials and Devices
• Drafting Committee: F04.21 - Osteosynthesis

Standards Content (Sample)

ASTM F544 92 0759530 0523593 LbL
AMERICAN SOCIETY FOR TESTING AND MATERIALS
4$Tk Designation: F 544 - 92 An American National Standard
191 6 Race St. Philadebhia. Pa 191 03
'U I'
Reprinted from the Annual Book o1 Ash Standards. Copyright ASM
Il not listed in the current combined index, will appear in the nerd edition.
Standard Reference Chart for
Pictorial Cortical Bone Screw Classification'
This standard is issued under the fixed designation F 544; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (c) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Definse. Consult the DoD Index of Spec$cations and
Standards for the specöic year of issue which has been adopted by the Department of Ddense.
1. Scope to the current editions of the following specifications: F 1 16
and F 543.
1.1 The chart in Fig. 1 and the appendix cover only cortical
3.2 Screws and drivers shown in Fig. 1 and not specified
bone screws. The chart gives screw dimensions and depicts
by Specifications F 116 and F 543 shall conform to those
driver tips and tap and clearance drills for cortical bone
nominal dimensions specified in Appendix X1, Fig. X 1.1.
screws.
1.2 This standard is intended as a guide for the purchase,
4. Bone Screw Data
selection, and application of cortical bone screws.
4.1 Table 1 is a size list of bone screws commonly used
1.3 It should be understood that no attempt is made herein
with bone plates. It gives their nominal major thread diame-
to depict custom-made screws or screws used for other appli-
ters in inches and millimetres. A specific screw may be of the
cations.
cortex or cancellous type, depending upon actual use and
manufacturer recommendations. It may be a tapping or
2. Referenced Documents
nontapping screw.
2.1 ASTM Standards:
4.2 For further information on screws and recommended
F 116 Specification for Medical Screwdriver Bits2 X 1 of this standard.
drills, see Appendix
F 543 Specification for Cortical Bone Screws2
2.2 ISC Standard:
ISO/D 15 9714-7 Bone Screw
TABLE 1 Bone Screw Data
Major Thread Diameter
Size
3. Dimensions
in. mm
3.1 Where applicable, screws and ciriver bits shall conform
Medical:
4M 0.111 2.8
6M 0.137 3.5
6.5M 0.144 3.7
I This reference chart is under the jurisdiction of ASTM Committee F-4 on
7M 0.154 3.9
Medical and Surgical Materials and Devices, and is the direct responsibility of
8M 0.163 4.1
Subcommittee FO4.21 on Osteosynthesis.
Metrk:
Current edition approved August IS, 1992. Published November 1993.
2.7 mm 0.106 2.7
Originally published as F 544 - 77. Last previous edition F 544 - 77 (1991).
3.5(a)mm 0.1 38 3.5
Annual Book of ASTM Standards, Vol 13.0 1.
3.5 rnrn 0.136 3.5
Available from American National Standards Institute, 1430 Broadway, New
4.5 rnm 0.177 4.5
York, NY 10018.
1

---------------------- Page: 1 ----------------------
ASTM F544 92 W 0759530 0523594 OT8 W
I I 1
METRIC SCREWS
NOTE 1-The purpose of this chart is to present a pctoriai view of those bone screws commonly used with he plates, no attempt is made here to picture
custom-made screws or screws for special applications.
NOTE 2-Screws may be manufactured from different metals. It is strorigly recommended that screws used with bone plating appliances be of the Sam material as the
bone plate. Dissimilar metals should never be mixed.
NOTE 3-Reference should be made to the most recent edition of the following ASTM material standard specifications for surgical implants:
F 55 Stainless Steel Bar and Wire for Surgical Implants
F 67 Unalloyed Titanium for Surgical Implants
F 75 Cast Cobalt-Chromium-MdyWenum Alloy for Surgical Implants
F 90 Wrought Cobalt-ChrMnium-Tungsten-Nickel Alloy for Surgical implants
F 136 Wrought Titanium 6A1-4V ELI Alloy for Use in Clinical Evaluation as a Surgical implant Material
F 138 Stainless Steel Bar and Wires for Surgical Implants (Special Quality)
NOTE 4-ASTM recommended practice for finish of surgical implants:
F 86 Practice for Surface Preparation and Marking of Metallic Surgical Implants
NOTE 5-ASTM standard specifications for bone screws and drlvers:
F 116 Medical Screwdriver Bits
F 543 Cortical Bone Screws
NOTE 6-Screw length: 4M, 6M, 6.5M, 7M, and 8M screws are measured by effective length. Metric screws are measured by overall I6ngth.
FIG. 1 Pictorial Cortical Bone Screw Chatt
APPENDIX
(Nonmandatory Information)
X1. SUPPLEMENTAL INFORMATION
X1.1 This appendix contains supplemental information X 1.2 Definitions:
X 1.2.1 screw thread-a helical groove on a cylindrical or
for the pictorial bone screw classification chart shown in Fig.
1. This appendix contains definitions and bone screw data a conical surface. The projecting
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