A2 Stainless Steel Slotted Shoulder Bolts DIN 923 | Step Stripper Bolts M1.6–M10

Match the shoulder diameter (Φ) to your clearance bore and the thread size (M) to your tapped hole. For example, a Φ5 × 10 × M4 bolt has a 5 mm (≈0.197") shoulder that rides in a 5 mm bore and an M4 thread that screws into the mating part. Shoulder length should typically equal or slightly exceed the thickness of the part being pivoted or guided. When in doubt, measure your existing hardware or consult your engineering drawing.

These bolts conform to DIN 923 with metric coarse threads per ISO 68-1 / DIN 13. Thread sizes range from M1.6 through M10, compatible with standard metric tapped holes, DIN 934 hex nuts, and other metric fastener hardware. They are not compatible with UNC/UNF inch threads.

A2 stainless steel (304-equivalent) generally offers good resistance to atmospheric corrosion, moisture, and many mild chemicals, making it suitable for outdoor and light marine environments. For highly aggressive saltwater exposure or strong chemical contact, A4 (316 SS) is typically recommended. If you are unsure whether A2 is appropriate for your environment, please contact us to confirm.

A2-70 grade stainless steel fasteners typically have a minimum tensile strength of 700 MPa (≈101,500 psi). Actual load capacity depends on the thread size, engagement length, and application geometry. For critical structural or load-bearing applications, consult a qualified engineer and verify against your specific design requirements.

The shoulder (Φ) is the smooth, precision-ground cylindrical section that fits into a clearance bore and functions as a pivot, guide, or spacer. The thread (M) is the smaller-diameter section that fastens into a tapped hole to secure the assembly. For example, on a Φ6 × M5 bolt, the 6 mm shoulder rides in a 6 mm bore while the M5 thread anchors the bolt in place.

Yes — this is one of the most common applications for slotted shoulder bolts. The precision shoulder provides accurate, repeatable positioning in jigs, fixtures, stamping dies, and tooling assemblies. The slotted head allows easy installation and removal with a standard flat-head screwdriver, which is convenient in production environments where frequent changeover occurs.

Divide the millimeter value by 25.4. Common conversions for this product range:

• 2 mm ÷ 25.4 ≈ 0.079" (≈5/64")
• 10 mm ÷ 25.4 ≈ 0.394" (≈3/8")
• 20 mm ÷ 25.4 ≈ 0.787" (≈25/32")
• 50 mm ÷ 25.4 ≈ 1.969" (≈2")
• 80 mm ÷ 25.4 ≈ 3.150" (≈3-5/32")

Each size is available in quantities of 1, 2, 5, 10, 20, 50, and 100 pieces per order. The per-unit price generally decreases at higher quantities, making bulk orders cost-effective for production tooling restocking. Select your preferred quantity from the variant dropdown above before adding to cart.