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NAS6204L4

Bolt

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Description

Fastener Length: 5/8", Thread: 1/4-28, Thread Length: 25/64"

Specifications

Fastener Length 0.605 inches minimum and 0.635 inches maximum
Grip Diameter 0.2485 inches minimum and 0.2495 inches maximum
Grip Length 0.240 inches minimum and 0.260 inches maximum
Hardness Rating 36.0 rockwell c minimum and 40.0 rockwell c maximum
Head Height 0.125 inches minimum and 0.140 inches maximum
Head Style Dished hexagon
Length 5/8
Material Steel
Material Specification Mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or ams6322 assn std 2nd material response
Min. Tensile Strength (psi) 160000 pounds per square inch
Special Features Pellet type or strip type element in threads or patch type element on threads
Specification Data 80205-nas6204 professional/industrial association standard
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 0.345 inches minimum and 0.395 inches maximum
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNJF
Thread Size 1/4
Width Between Flats 0.429 inches minimum and 0.439 inches maximum

Other sizes

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

Cross-reference

Similar parts

Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.

  • NAS6204C4 NAS 1/4-28 · 5/8 in · Dished hexagon · Steel
  • NAS6304-4 NAS 1/4-28 · 5/8 in · Dished hexagon · Iron
  • NAS6304U4 NAS 1/4-28 · 5/8 in · Dished hexagon · Iron

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