Purlin Clamp, 3/8" Fasteners, Black Anodized The Purlin Clamp is perfect for installing almost anything to bar joists, purlins and I-beams up to 1" thick. A 1/2"-13 x 2.5" fully threaded square head set screw is provided for locking onto the structural member. A 1/2"-13 x 1" grade 5 Hex Head Bolt is supplied to connect the load. Or use a 1/2"-13 tpi threaded rod to support a load at any length. The Purlin Clamp has Micro-grooves for a secure connection to beam. The 1/2" fastener Purlin Clamp body is extruded from aircraft grade aluminum and is 1" thick. The Purlin Clamp is also available with 3/8"-16 tpi fasteners. 3/8"-16 tpi x 2.5" fully threaded square head set screw is provided for locking onto the structural member. A 3/8"-16 x 1" grade 5 Hex Head Bolt is supplied to connect the load. Or use a 3/8"-16 tpi threaded rod to support a load at any length. Download Spec Sheet (PDF) Working Load Limit 500 lbs.for 1/2" and 300 lbs for 3/8" Hardware 1/2 x 2-1/2" Square Head Set Screw or 3/8 x 2-1/2" Square Head Set Screw .5 x 1" Hex Head Cap Screw 1" Belleville Washer Dimensions 3 3/8" x 3 7/8" Weight 0.70 lb. Case Quantities each
