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NAS1670-4L8

Bolt Jo

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Description

Jo-bolt part number NAS1670-4L8

Specifications

Countersink Angle 100.0 degrees
Expansion Device Threaded stem
Grip Length 0.470 inches minimum and 0.531 inches maximum
Hardness Rating 39.0 rockwell c minimum bolt and 43.0 rockwell c maximum bolt, 39.0 rockwell c minimum nut and 43.0 rockwell c maximum nut
Head Major Diameter 0.507 inches maximum
Head Style Flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer)
Material CRES
Material Specification Mil-s-5626 mil spec 1st material response bolt or mil-s-6049 mil spec 2nd material response bolt or mil-s-6758 mil spec 3rd material response bolt, Mil-s-5626 mil spec 1st material response nut or mil-s-6049 mil spec 2nd material response nut or mil-s-6758 mil spec 3rd material response nut, Qq-s-763 fed spec 1st material response sleeve or ams 5639 assn std 1st material response sleeve or ams 5641 assn std 2nd material response sleeve or astm a582 assn std 3rd material response sleeve
Shank Diameter 0.258 inches minimum and 0.260 inches maximum
Shank Style Threaded self-plugging shank w/sleeve
Shear Strength 9000 double pounds per square inch
Specification Data 80205-nas1670 professional/industrial association standard
Surface Treatment Cadmium and chromate, Cadmium and passivate
Surface Treatment Specification Qq-p-416,ty1,cl3 fed spec 1st treatment response sleeve and qq-p-35 fed spec 2nd treatment response sleeve, Qq-p-416,ty2,cl2 fed spec single treatment response bolt, Qq-p-416,ty2,cl2 fed spec single treatment response nut

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

Cross-reference

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Catalog data updated 2026-07-05. Report a data error