NAS679A5 Nut Self-Locking Steel $3.34 Brand National Aerospace Standards Type Nut NSN 5310-00-807-1476 Material Steel MPN NAS679A5 condition New – Open box SELF-LOCKING NUT(PART #NAS679A5)Washer Outside Diameter:0.520 in.Overall Height:Between 0.251 in. & 0.266 inWasher Thickness:0.023 in.Width Across Flats:Between 0.367 in. & 0.378 in.Thread Qty.24Thread Size:0.312 in.Material:Steel