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  • Fastener Failure Analysis: Fracture Failure of Countersunk Flat Head Screws Case
    We have the opportunity to view an analysis conducted on behalf of a European appliance manufacturer experiencing fracture failure of countersunk flat head screws. Three bags of T40 M8 x 27 flat head, countersunk screws were received for metallurgical analysis.
  • Fastener Failure Analysis: Automotive Hex Head Cap Screw Case
    consultancy and testing role in their analysis. Thirteen (13) fractured M20 Class 8.8 Hex Head Cap Screws were submitted for analysis with a request to perform the following tests. Visual examination, SEM (Scanning Electron Microscopy), tensile testing, hardnessanalysis and chemical analysis.
  • Dimensions of Counterbores & Bolt Holes for Socket Head Cap Screws per JIS B 1176:1998 (.pdf)
    When designing a mechanism, there may be a requirement to secure two components. This is typically done using socket head cap screws. The enclosed table details the standardize sizes of the required holes to accept the commonly used metric screw sizes.
  • Tips for Adjusting the Bit Guide of a MSP Screw Presenter
    with the screw head and the fastener is removed, then another screw automatically dispenses to the bit guide and is ready for an easy pick-up. No fumbling with screws.
  • Turn of the Screw: Rolled & Ground Types Inch Closer Together
    . Rather than going to head-to-head with ground screws, though, Nook says that it will target the market served by servo-hydraulics, which involves high loads, high speeds, and precision motion. Though the company won't release the new rolled screws until this summer, it's currently Beta-testing them
  • Automotive stainless fastener needing high corrosion resistance.
    The customer needed to brighten the parts,. but also needed to enhance the corrosion resistance because. of the application and environment. The unique. problem associated with this part is that the washer is. captive but not attached to the head of the screw. With the assembly comprised of two
  • Washers
    known as plain washers, provide a bearing surface for a nut or screw head, cover large clearance holes, and distribute fastener loads over a large area, particularly on soft materials. This, in turn, reduces contact stresses and can thus reduce relaxation. Two types of washers are defined for general
  • Illustration software helps design manuals
    curves and ellipses. Curves represent the threads and ellipses make up part of the head and the end of the screw. Moving a grouped PCB (the dotted square) close to a line shows the snap location it will lock to, in this case the midpoint of the line. A guide line (the straight line) is used to line up
  • Safety Switches: STP Design, Type 2
    removal of the actuating head fixing screws, the approach direction can be changed to any 90° increment. The standard setting is approach direction A.
  • Plastics Consultancy Network - Profile and sheet extrusion
    line begins with the hopper which holds the plastic material (in either powder or granule form). The hopper continuously feeds the material to a heated barrel which contains a rotating screw. This screw transports the polymer to the die head and simultaneously the material is heated, mixed