Proform
Proform PR66753 Cam Lock Header Bolts Hex Head 3/8"-16 Thread 1" Uhl Set 12
Proform PR66753 Cam Lock Header Bolts Hex Head 3/8"-16 Thread 1" Uhl Set 12
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PROFORM CAM LOCK HEADER BOLTS PR66753 HEX HEAD 3/8"-16 THREAD 1" UHL SET OF 12 These Proform wedge locking header bolts are permanently assembled with a pair of special washers. When the bolts are 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. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, the Proform wedge locking header bolts can be loosened with a normal wrench, lubricated, and reused. |
Application: Suit Chev small block V8 Fastener Style: Bolt Thread Size: 3/8-16 in. Head Style: Hex Underhead Length (in): 1.000 in. Fastener Material: Steel Fastener Finish: Black oxide Quantity: Sold as a set of 12. |
Manufacturer Part Number:
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