Hilti S-MD 12-14 HWH #5 SS304 Self-drilling metal screws

Self-drilling screw (A2 stainless steel) with 5/16 washer for thick metal-to-metal fastenings (up to 0.59 inch). Features: * Self-drilling screw for fast assembly in one step * Perfect Sealing (PS) feature – specially engineered geometry below the head which prevents over-compression of the EPDM washer, helping to more reliably seal out water * Fast and robust drill tip for use on high-strength steel (up to grade S 450 GD) with Racing Tip technology – a wave-form cutting edge which removes chips much faster and helps prevent point burn-out * For more reliable fastenings with defined load values