Self-drilling screws, cross recessed countersunk head with tapping thread DIN 7504P Hardened steel 3.9*16: 1, 500, 000 pcs. 3.9*19: 2, 500, 000 pcs. 3.9*25: 2, 000, 000 pcs. 3.9*32: 500, 000 pcs. 3.9*38: 1, 500, 000 pcs. 4.2*38: 2, 000, 000 pcs. 4.8*60: 650, 000 pcs. 3.9*25: 2, 000, 000 pcs. SELF TAPPING SCREW PHIL FLAT HEAD 6 BREAKS UNDER HEAD. TWINFAST HI-LOW THREAD, 25 DEGREES NEEDLE Hardened steel, zinc plated 3.9*32: 500, 000 pcs. 3.9*38: 500, 000 pcs.