T/ZJGS 04-2017 Locking hardware accessory technical specification Part 3: Slant tongue

Scope

Main technical contents: 5.1 Strength 5.1.1 Head tensile strength: Test according to Method 6.1.1. The head of the bias tongue should withstand the tensile force F1 specified in Table 1 and not break. 5.1.2 Bias tongue foot push force: Test according to Method 6.1.2. The foot of the bias tongue should withstand the push force F2 specified in Table 1 and not break. 5.1.3 Impact force: Test according to Method 6.1.3. The head of the bias tongue should withstand the impact force specified in Table 1 and not break. 5.2 Technical parameters The technical parameters shall comply with the provisions of Table 2. Table 2 Clause Symbol Unit Specification Material parameters 5.2.1 Bias tongue diameter ≥? mm 30≤ Specification ≤ 35 Copper/alloy 4.0 Steel 3.5 40 Copper/alloy 5.0 Steel 4.0 45 Copper/alloy 5.0 Steel 4.5 50 Copper/alloy 8.0 Steel 6.0 Specification ≥ 75 Copper/alloy 8.0 Steel 6.5 5.2.2 Bias tongue diameter deviation mm According to Appendix B 5.2.3 Bias tongue foot thickness ≥ A mm 30≤ Specification ≤ 45 Copper/alloy 1.5 Steel 1.5 Specification ≥ 50 Copper/alloy 2.0 Steel 2.0 5.2.4 Bias tongue slope ≥ α degree Specification ≥ 30 45° 5.2.5 Bias tongue sloped end thickness ≥ B mm 30≤ Specification ≤ 45 Copper/alloy 0.5 Steel 0.5 Specification ≥ 50 Copper/alloy 1.0 Steel 1.0 5.2.6 Bias tongue foot chamfer C Specification ≥ 300.2×45° The technical parameters shall comply with the provisions of Table 2.

Development Information

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