YY/T 0957.1-2014Orthopaedic instruments - Drive connections - Part 1: Keys for use with screws having hexagon socket heads (English PDF)

1 Scope

YY/T 0957 provisions of this part of the working end wrench for screwed into or out of the surgical implant metal bone screws with a hex of

Dimensions, tolerances, mechanical properties and performance requirements. Has a working end of this Part apply to screw wrench in line with ISO 5835

With screws.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 230.1 metallic materials - Rockwell hardness test - Part 1. Test methods (A, B, C, D, E, F, G, H, K, N, T standard

Feet) (GB/T 230.1-2009, ISO 6508-1.2005, MOD)

YY/T 0294.1 surgical instrument metallic materials - Part 1. Stainless steel (YY/T 0294.1-2005, ISO 7153-1.1991, MOD)

YY/T 0605.5 surgical implants of metallic materials - Part 5. Wrought cobalt - chromium - tungsten - nickel alloy (YY/T 0605.5-2007,

ISO 5832-5.2005, IDT)

ISO 5835 Hexagon drive surgical implants under the spherical surface of asymmetrical thread connecting metal bone screw size (Implantsfor surgery-Metalbonescrewswithhexagonaldriveconnection, sphericalunder-surfaceofhead, asymmetrical thread-Dimensions)

3 Dimensions and tolerances

Dimensions and tolerances shall comply with Figure 1 and Table 1 provisions.

Explanation.

e --- diagonal diameter;

s --- on the edge width;

l --- Hexagon length portion.

1 screw wrench size label […]