Imperial Bolts & Nuts Grade 8 UNC - 5/8” Diameter
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Thread Pitch: (T.P.I.) 11
Across Flats: 15/16”
Head Height: 25/64”
Hex Nut Thickness: 35/64”
Recommended Seating Torque: 183 ft.lbs
Fully Threaded up to and including: 2”
Thread length for bolts up to 6” long: 1-1/2”
Thread length for bolts longer than 6”: 1-3/4”
Thread length for bolts 16” long: 7”
Our online store is open 24/7 and we ship Monday through Friday, excluding public holidays.
Orders received for products without shipping restrictions will generally ship the same business day when received before 3:00 p.m.
Some products may take longer or there may be additonal fees due to items being heavy, large or are requesting delivery to a remote rural location. You may be contacted after placing your order if this applies.
We cannot deliver to PO boxes, Stewart Island or the Chatham Islands.
