ITEM: 5/811 Thread, 41/2 Length Under Head, Alloy Steel Hex Head Bolt MSC. MANUFACTURER: MSC. BRAND: MSC. MANUFACTURER PART: HVHS.000289.50. 5/811 Thread, 41/2 Length Under Head, Alloy Steel Hex Head Bolt Uncoated, UNC Thread, ASTM A193, Grade B7 (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Bolts, Screws & Cap Screws. Hex Head Bolts. N/A. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: MSCBolts, Screws & Cap ScrewsBoltsHex Head BoltsN/A.