Axial Strength and Mating Screw Recommended Tightening Torque for PEM Brand Self-clinching Nuts

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Abner Kelley
5 years ago
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1 Brand S Nuts - Metric Mating Screw Recommended Tightening Torque, (N m) S-M2-0ZI S-M2-1ZI S-M2-2ZI S-M2.5-0ZI S-M2.5-1ZI S-M2.5-2ZI S-M3-0ZI S-M3-1ZI S-M3-2ZI S-M3.5-0ZI S-M3.5-1ZI S-M3.5-2ZI S-M4-0ZI S-M4-1ZI S-0M4-2ZI S-M5-0ZI S-M5-1ZI S-M5-2ZI S-M6-00ZI S-M6-0ZI S-M6-1ZI S-M6-2ZI S-M8-1ZI S-M8-2ZI S-M10-1ZI S-M10-2ZI S-M12-1ZI

2 Brand SP Nuts - Metric Mating Screw Recommended Tightening Torque, (N m) SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-0M SP-M SP-M SP-M SP-M SP-M SP-M SP-M SP-M

3 Brand CLS Nuts - Metric Mating Screw Recommended Tightening Torque, (N m) CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-0M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M CLS-M

4 Brand CLA Nuts - Metric Mating Screw Recommended Tightening Torque, (in. lbs.) w/180 ksi Develop Min. Aluminum Steel Stainless Steel Steel Steel Screw, kn Axial, MPa 2024-T4 PC 5.6 A2-70 PC 8.8 PC 10.9 PC 12.9 CLA-M CLA-M CLA-M CLA-M CLA-M CLA-M CLA-M CLA-M CLA-M CLA-M CLA-M CLA-M

5 Brand SH, HNL and H Nuts - Metric Mating Screw Recommended Tightening Torque, (in. lbs.) SH-M6-1X SH-M6-2X SH-M8-1X SH-M8-2X SH-0M10-1X HNL-M6-LZ HNL-M8-LZ HNL-M10-LZ H-M10-ZI

6 Brand SMP Nuts - Metric Mating Screw Recommended Tightening Torque, (in. lbs.) SMPS-M SMPP-M SMPS-M SMPP-M SMPS-M SMPP-M

7 Table I Material Properties for Selected Strength Levels of Mating Screws UNIFIED Unified Units Metric Units Industry Material Strength, ksi Yield/Tensile Material Strength, MPa Standard Designation Ultimate Yield Ratio Ultimate Yield SAE J429 Grade ASTM 593 Grade C SAE J429 Grade SAE J429 Grade ASTM A574 (see note 3) METRIC ISO Property Class ISO Property Class ISO 3506 A ISO Property Class ISO Property Class ISO Property Class ISO Property Class Table II Material Properties Brand Unified Units Metric Units Nut Nuts Using Material Strength, ksi Yield/Tensile Material Strength, MPa Material This Material Ultimate Yield Ratio Ultimate Yield HNL Not Heat Treated Steel S, SS, H Standard Heat Treat SH Special Heat Treat Stainless CLS, CLSS, SMPS 300 Series Steel SP, SMPP A286 Age Hardened Aluminum CLA 2024-T Notes: 1) Other industry standards exist which define the same or similar strength levels. 2) Values in blue are conversions using 1 MPa= psi. 3) Minimum yield adjusted up to 162 ksi (90% of 180 ksi) from the 153 ksi required by ASTM A574.

Axial Strength and Mating Screw Recommended Tightening Torque for PEM Brand Self-clinching Nuts

Axial Strength and Mating Screw Recommended Tightening Torque for PEM Brand Self-clinching Nuts Brand S Nuts - Unified S-256-0ZI 665 180 2.6 2.9 4.1 5.8 7.3 S-256-1ZI 665 180 2.7 3.1 4.4 6.2 7.7 S-256-2ZI 665 180 2.7 3.1 4.4 6.2 7.7 S-348-0ZI 800 180 3.8 4.3 6.1 8.6 11 S-348-1ZI 875 180 4.1 4.7 6.6