Sps

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66 Dartman

66 Dartman

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It's been awhile since i used these bolts and can't remember all the TQ values does anyone have them for Rod, Main,head, bolts?
If my memory is right you had to use moly on them?
All i can remember is 7/16-20 was 75,0-80.0 with a .0070-.0080 stretch,
3/8-24 47.5-54.0,.0055-.0065 stretch.
Thanks.
 
do you mean SPS as in Standard Pressed Steel? or SPS technology's the aerospace co that made fasteners for the space shuttle?
 
Mr. Gasket/SPS rod bolt torque specs

Part # thread size preload lbs bolt stretch applied torque
2980----------3/8-24------------9,000---------.0055”-.0065”---------47.5 to 54.0
2981----------3/8-24------------9,000---------.0065”-.0075”---------47.5 to 54.0
2982----------3/8-24------------9,000---------.0045”-.0055”---------47.5 to 54.0
2983---------5/16-24-----------6,000---------.0055”-.0065”----------23.0 to 26.0
2984----------3/8-24------------9,000---------.0055”-.0065”---------47.5 to 54.0
2985---------11/32-24----------8,000---------.0060“-.0070”---------34.0 to 40.0
2986-----------3/8-24-----------9,000---------.0060”-.0070”---------54.0 to 60.0
2987----------7/16-20-----------9,000---------.0070“-.0080”---------75.0 to 80.0
2988-----------3/8-24-----------9,000----------.0065”-.0075”---------47.5 to 54.0
2989-----------3/8-24-----------9,000----------.0065”-.0075”---------47.5 to 54.0
 
66 Dartman said:
Yes SPS technology's they make automotive bolts aswell.
Click to expand...

HA! they are around the corner from me, my grandfather worked there for many years in the 60's 70's and 80's I remember taking tours of the factory when I was a kid, along with the watch they gave him when he retired, I have many many SPS nuts and bolts, even a few titanium ones, and a couple giant ones he said were for Boeing 747 wings
 
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