A4 Stainless Steel Hex Head Cap Screws M39-4.0x160mm (5pcs) - for Marine & Outdoor Use

Hex cap screws are manufactured to tighter tolerances as compared to hex bolts. A4 stainless steel is functionally equivalent to 316 grade and is also known as "marine grade". Stainless steel significantly improves resistance to tarnishing or corrosion. The washer face under the head provides a precision bearing surface. The chamfered point improves engagement with a nut or pre-tapped hole.DIMENSIONAL ATTRIBUTES Diameter (Nominal): M39 Thread Pitch: 4.0 Diameter (Dimension): 39mm Length (Nominal): 160mm Thread Length (Nominal): 160mm Across Flats (Basic): 60mm Across Flats (Minimum): 58.8mm Across Flats (Maximum): 60mm Head Height, Overall: 25mm Head Height, Overall (Minimum): 24.58mm Head Height, Overall (Maximum): 25.42mmPRODUCT ATTRIBUTES Category: Cap Screws System of Measurement: Metric Brand: Aspen Fasteners Head Style: Hex Head Head Style Detail: Washer Face Drive Style: External Hex Drive Pitch: Coarse Thread Thread Length: Full Thread Thread Direction: Right-Hand Thread Point: Chamfered Point Material: Stainless Steel Material Grade: A4 Stainless Steel Coating: Uncoated Standards and Specifications: DIN 933 / ISO 4017