Triumph Unit And Pre-Unit 1/4-inch Semi-Domed Head Fender Bolts (6) PN# 99-3517 DS57 DS-57

The DS57 bolt is an important fastener as it was used as a fender stay bolt, license plate bracket bolt, oil level plug bolt and in other various capacities for many years of production. This kit features (6) bolts. The original DS57 part number is superseded to 99-3517. The 1/4-26 TPI CEI bolt features a semi-domed head and measures 5/8″ under head. Made in the UK. The DS57 is used in many applications on the pre-1969 Triumph models and is most commonly paired with the 82-0879 1/4-26 CEI nut. The bolt is threaded into the nut and usually a flat or spring washer is placed under the nut. The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.