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NAS334CP27

Bolt

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Description

Fastener Length: 2-15/16", Thread: 1/4-28, Thread Length: 15/32"

Specifications

Countersink Angle 99.0 degrees minimum and 101.0 degrees maximum
Distance From Head Largest Bearing Surface To Shank Hole Center 2.562 inches nominal first hole
Fastener Length 2.890 inches minimum and 2.937 inches maximum
Grip Diameter 0.2483 inches minimum and 0.2492 inches maximum
Grip Length 2.500
Hardness Rating 36.0 rockwell c minimum and 40.0 rockwell c maximum
Head Diameter 0.497 inches minimum and 0.507 inches maximum
Head Style Flat countersunk
Internal Drive Style Cross recess type ii
Length 2 15/16
Material Steel
Material Specification Mil-s-5626 mil spec 1st material response or mil-s-8844 mil spec 2nd material response or ams6414 assn std 2nd material response or mil-s-6-49 mil spec 3rd material response
Min. Tensile Strength (psi) 160000 pounds per square inch
Shank Unthreaded Hole Diameter 0.076 inches nominal first hole
Specification Data 80205-nas334 professional/industrial association standard
Surface Finish 32.0 microinches grip32.0 microinches threads
Surface Treatment Cadmium and chromate
Surface Treatment Specification Qq-p-416 ty2 cl2 fed spec single treatment response
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.469
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNJF
Thread Size 1/4

Other sizes

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Cross-reference

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