RCBS 5-10 Scale Part?

frjeff · August 14, 2023, 12:30 PM

Have this scale. It is missing the little nylon screw that is used to hold the micrometer poise in place. Can it be used without the screw?

RCBS no longer has parts for this old model. Can anyone share the screw specs that I might find one somewhere?
thanks ……..

**44 AMP** · August 14, 2023, 03:27 PM

If you're talking about the lock screw for the drum, any screw of the same diameter and thread pitch will do that job.

HOWEVER, a different screw MIGHT throw off the weight of the balance beam, and you should use a set of check weights to see if the calibration is changed by a replacement lock screw.

If it is, this is not an insurmountable problem, you just simply have to figure out the difference in the scale setting vs its indicator scale to get the weight desired.

I would recommend that once you know the amount of "offset" needed (if any) you make a note of that, and tape/glue a label to the scale base informing the world how much the scale reads "off", so you see it, every time you (or anyone else) uses the scale.

Smoke & Recoil · August 14, 2023, 05:17 PM

Hello neighbor...the screw is 6-32 with 1/4" treads and weight is (.3) grains.

1stmar · August 18, 2023, 09:19 AM

My experience with RCBS is very positive. I called them for a missing part on a 20 year old rcbs jr and they sent it free of charge.

August 14, 2023, 12:30 PM	#1
frjeff Member Join Date: April 19, 2009 Location: Northern MI, USA Posts: 60	RCBS 5-10 Scale Part? Have this scale. It is missing the little nylon screw that is used to hold the micrometer poise in place. Can it be used without the screw? RCBS no longer has parts for this old model. Can anyone share the screw specs that I might find one somewhere? thanks …….. __________________ Fr. Jeff+

August 14, 2023, 03:27 PM	#2
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 28,877	If you're talking about the lock screw for the drum, any screw of the same diameter and thread pitch will do that job. HOWEVER, a different screw MIGHT throw off the weight of the balance beam, and you should use a set of check weights to see if the calibration is changed by a replacement lock screw. If it is, this is not an insurmountable problem, you just simply have to figure out the difference in the scale setting vs its indicator scale to get the weight desired. I would recommend that once you know the amount of "offset" needed (if any) you make a note of that, and tape/glue a label to the scale base informing the world how much the scale reads "off", so you see it, every time you (or anyone else) uses the scale. __________________ All else being equal (and it almost never is) bigger bullets tend to work better.

August 14, 2023, 05:17 PM	#3
Smoke & Recoil Senior Member Join Date: August 23, 2008 Location: East shore of Lake Michigan. Posts: 715	Hello neighbor...the screw is 6-32 with 1/4" treads and weight is (.3) grains. __________________ Sent from my Tandy 1000

August 18, 2023, 09:19 AM	#4
1stmar Senior Member Join Date: March 21, 2012 Location: Connecticut Posts: 2,378	My experience with RCBS is very positive. I called them for a missing part on a 20 year old rcbs jr and they sent it free of charge.