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NAS1670-4L4

Blind Fastener

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Description

Blind Fastener

Specifications

Countersink Angle Between 99.0 degrees and 101.0 degrees
Expansion Device Serrated stem-type w
Fastener Length Between 0.366 inches and 0.396 inches
Grip Length Between 0.220 inches and 0.281 inches
Hardness Rating 39.0 rockwell c bolt and 43.0 rockwell c bolt, 39.0 rockwell c nut and 43.0 rockwell c nut
Head Major Diameter Between 0.499 inches and 0.507 inches
Head Style Flush (flat) countersunk (included angle - less than 135 degrees w or w/o chamfer)
Material CRES
Material Specification Mil-s-5626 military specification 1st material response bolt or mil-s-6049 military specification 2nd material response bolt or mil-s-6758 military specification 3rd material response bolt, Mil-s-5626 military specification 1st material response nut or mil-s-6049 military specification 2nd material response nut or mil-s-6758 military specification 3rd material response nut, Qq-s-763 federal specification 1st material response sleeve or ams 5639 assn standard 1st material response sleeve or ams 5641 assn standard 2nd material response sleeve or astm a582 assn standard 3rd material response sleeve
NIIN 00-205-7865
NSN 5320-00-205-7865
Shank Diameter Between 0.258 inches and 0.260 inches
Shank Style Threaded self-plugging shank w/sleeve
Surface Treatment Cadmium and chromate and passivate
Surface Treatment Specification Cl 2 federal specification 1st treatment response sleeve and qq-p-35 federal specification 2nd treatment response sleeve type 2 qq-p-416, Cl 2 federal specification single treatment response bolt type 2 qq-p-416, Cl 2 federal specification single treatment response nut type 2 qq-p-416
Weight 0.01 lb

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