M8 x 25 Alloy Steel Metric Socket Head Shoulder Screw (Stripper Bolt) is a stripper bolt for metric tooling where the shoulder length sets travel or spacing. The shoulder is ground slightly below nominal so it can slip into a reamed nominal bore and rotate or locate freely.
Packaging machinery motion assemblies use stripper bolts in pivots, stops, guides, and guarded moving details. Check shoulder diameter, shoulder length, thread size, thread length, socket size, and head dimensions before substitution.
For metric tooling repairs, Cold Headers can help quote the specified stripper bolt without converting it to an inch size. 18-8 Stainless Steel Socket Head Stripper Bolts are the stocked routing choice when the print specifies stainless material.
Technical Highlights
- Style: Socket head shoulder screw (stripper bolt), internal hex drive
- Material: Alloy Steel
- Shoulder Diameter: 8 mm nominal (7.987 / 7.951 mm)
- Shoulder Length: 25 mm
- Thread: M6-1.0 (one size below the shoulder, per ISO 7379)
- Thread Length: 11.25 mm
- Head Diameter: 13.00 / 12.73 mm (max/min)
- Head Height: 5.50 / 5.32 mm (max/min)
- Hex Key Size: 4 mm
- Minimum Key Engagement: 3.3 mm
- Dimensional Standard: ISO 7379
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
