Wedge-Locking Header Bolts Hex Head 3/8 Diameter X 1 Inch Black Oxide 12 Pcs Proform Starter Switch 2-Piece Pushrod Set

2-Piece Pushrod Set

Silver Powdercoat Finish

Precision machined to insure consistency and ratio accuracy

Measures 21 Inches Wide x 21 Inches Long x 39 Inches Tall

For Proform Starter Part Numbers 66256

Wedge-Locking Header Bolts Hex Head 3/8 Diameter X 1 Inch Black Oxide 12 Pcs Proform Starter Switch 2-Piece Pushrod SetEach PROFORM Grade 8 Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft lbs, the washers super hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. After being self locked in this manner, any bolt loosening rotation is blocked by a wedge locking action created by the washers interfacing, matching cams. Its an uphill climb: vibration that might