Stainless Steel float bowl socket caps

[rigwit]

Went to my usual bolt suppliers to find they were closing down nearest trade centre to me (12 miles).

So on way back I popped into a general trade outlet, who those in UK will know as, "Dixon Hall" told chappie what I was after, 40 seconds later I had 16 off M4x16mm socket cap set screw, and 16 off light duty stainless spring washers..

Damage   £1.82 inc vat if you want to do it and have a DH local,      numbers are...........

M4x16 stainless steel socket cap screw  KSC1416......................................16 required

M4 light duty Stainless Steel washer              OST4.........................again 16   required

        

[a_morti]

Went to my usual bolt suppliers to find they were closing down nearest trade centre to me (12 miles).

So on way back I popped into a general trade outlet, who those in UK will know as, "Dixon Hall" told chappie what I was after, 40 seconds later I had 16 off M4x16mm socket cap set screw, and 16 off light duty stainless spring washers..

Damage   £1.82 inc vat if you want to do it and have a DH local,      numbers are...........

M4x16 stainless steel socket cap screw  KSC1416......................................16 required

M4 light duty Stainless Steel washer              OST4.........................again 16   required

        

I bought some cap screws on eBay. packs of 20 are about £1.53. I didn't bother with spring washers as they have been shown to not really do much at all. The head of the cap bolt is about the same size as the washer on the original screws so I am not worried about the load being spread enough.

I also got some M4x10 screws for the carb tops and tickover bracket.

[rigwit]

Manufactures don't put washers on OE fixings just for fun/show, and if you, "need it now" e-bays no good, if you can wait and source then by all means use, I've done it myself, and probably will in the future but as mentioned need it now its good to know not being ripped off..

[a_morti]

Manufactures don't put washers on OE fixings just for fun/show, and if you, "need it now" e-bays no good, if you can wait and source then by all means use, I've done it myself, and probably will in the future but as mentioned need it now its good to know not being ripped off..

Fair play if you nee it somewhere from stock.

Washers are to spread the load - covered by bigger screwhead. Spring washers are to reduce vibration loosening but it's now been shown that they don't work. Have a look on YouTube.

[rigwit]

No thanks, I will rely on experience in the Class, and in the Field.............

Washers are occasionally used as a means of minimising frictional scatter besides the common reason of reducing the bearing stress on the joint face. The friction condition between the washer and nut/bolt face can be reasonably well defined and controlled, more so than the joint surfaces usually can. By controlling the friction, the preload can be more reliably achieved. To do this consistently, a close fit is needed on the inside diameter of the washer. One way in which this can be achieved is by the use of a SEMS unit (in which a washer is held captive on the bolt shank). The same can be achieved by using a KEPS unit (a washer being held captive on a nut).

and that's before going into the weird and wonderful world of galvanic corrosion..