My 16 year old son has a 1993 Shogun Trail Breaker, According to BikePedia.com it features Shimano Tourney components, Front Chain ring is Shimano Tourney, 28/38/48 teeth, Specs say FC-TX71 or FC-TY33. Rear is a 6 speed. Now the front chainring, the 48 is solid with the crank arm and mounted to the crankset. However the 38 and 28 are solid together but no longer connected to the 48. just spin freely, flopping on the spindle. I believe it needs new chainring bolts to bolt the 38 to the 48. Bolts are there but are pulled through the holes in the 38.

LBS has been scratching their heads for over a week and a half. Say they never seen anything like it and can not find any bolts and suggest I purchase a complete new crankset for $75 to $85 installed or try the hardware store. (purchased the bike at Goodwill for $14.95)

In checking the web, Amazon in particular I find a multitude of chainring bolts.

Question: could someone recommend the the correct bolts? by model numbers or links, Please.

Thank You!