BACKGROUND:
To many these panel screws would be discarded but I am ‘big’ on reusing or repurposing old electronic components and hardware, particularly from the point of view of sustainability.
Sustainability far more than NOT burying waste material back into the earth but consciously recognising the energy expended to create the item through it’s various “stages” in life, beginning with the raw materials being extracted from the earth, processed, finished and then fitted into equipment – every single step used energy which is referred to as embodied energy.
To give an approximate representation of how much energy was used in the WHOLE production process of an item, I have created what I refer to as the Ee (Embodied Energy) value, measured in Mj
The Ee value is an approximation only and usually measured in Mj.
Coming up with an Ee value is an attempt to take into account the energy used for extracting and processing of the raw materials, manufacturing of the component, distribution of the component(s) and final assembly of the component. In fact the measurement of Ee can become extremely complicated and technical, many tertiary institutions are involved in this specialised field of science.
I have used various reliable sources online to arrive at approximate Ee values, these are approximations and the sole purpose is to raise awareness of the extraordinary energy consumed in the creation of various electronic components and hardware – it may give you cause to think twice before wasting all that energy and burying it in the ground, with the possible side-effects of poisoning the environment due to leeching.
HERE is a page I have created which gives some tables and more detailed information about specific Ee values for different materials plus a link which you can use as a starting point to investigate Ee for yourself.
These are the screws used to hold the top cover and under cover onto the chassis of the equipment, usually the cover panel has a circular recess where these screws fit.
These cover panel screws were saved when the JVC BR-6400TR Professional VCR machine went under the “knife” recently on the workshop bench. Nothing worse than taking a piece of equipment apart only to find that one more cover panel screws have gone A.W.O.L.
I am pretty certain that these cover panel screws would also suit other professional, Japanese produced equipment.
COVER PANEL SCREWS
Material: Non-ferrous alloy with a Chrome like finish
Head: 8.2mm diameter Philips slot
Thread type: 6.7mm length x 3.85mm diameter with an unknown thread type (the JVC Service manual just indicates this hardware as a ‘screw’ with no further details)
COSMETIC CONDITION:
All screws are clean, shiny
No damage to the threads
Packed into a sealed packet of 8