co-extruded self retaining screw spacers * Unique Bi-Material Design, Patented * Tight Fit with Low Insertion Force * Works with #4 - #8 (M3-M4) Screw Sizes CRS-1 #4 Screws CRS-2 #M3 Screws CRS-3 #6 Screws CRS-4 #M4, #8 Screws CRS Spacers provide precise spacing of electro-mechanical assemblies and eliminate shakes and rattles associated with movement in high-vibration PC-board applications, such as large rack-mounted fan cooling trays and multiple trays found in telecommunications, industrial networks, and avionics applications. Designed with Bivar's patent-pending technology, these co-extruded self retaining screw spacers feature a soft pliable inner lining with a hard outer shell composed of UL rated 94V-0 PVC material. This unique design requires only a minimal amount of manual insertion force to cause the spacer's soft inside material to conform to the threads of the screw. The cushioning of the encapsulated screw and self-tapping design structure secures the screw in place, ensuring tight retention. Material Specifications: Natural, Rigid and Semi-Rigid PVC material, UL Rated 94V-0 Oxygen Rating Index: Over 45% Standard Drawing Tolerances: (unless otherwise indicated) O.D. +_ .005 (.13) I.D. +_ .005 (.13) "H" Dim: 1/16-1/2 (1.6-12.7) is +_.005 (.13) "H" Dim: 9/16-1.0 (14.3-25.4) is +_ .010 (.25) "H" Dimension Price Code CRS-1 thru CRS-4 .050-.075 (1.25-1.9) W .080-.150 (2.0-3.8) X .155-.230 (4.0-5.8) X .235-.310 (6.0-7.9) Y .315-.380 (8.0-9.7) Z .385-.495 (9.8-12.6) ZZ .500-.750 (12.7-19.1) ZZZ .755-1.250 (19.2-31.8) ZZZZ Ordering Information: CRS X XXX Length Expressed in Inches (Must be even multiples of .005") or whole millimeters (example: 2mm) 0.750 = 750 0.050 = 050 1.250 = 1.250 0.100 = 100 Series 69 www.bivar.com cage code (FSCM) 32559 (c) copyright 2004 Bivar Inc.