Spec hardware, served at warp speed.

screws › socket head cap screws

NAS1351N4LL36

Socket Head Cap Screw

View quote list → Saved parts →

Description

Fastener Length: 2-1/4", Thread: 1/4-28, Head Width: 3/16", Thread Length: 1", NAS1351 series bolt

Specifications

Fastener Length 2.210 inches minimum and 2.250 inches maximum
Head Diameter 0.365 inches minimum and 0.375 inches maximum
Head Height 0.244 inches minimum and 0.250 inches maximum
Head Style Flat chamfer
Internal Drive Style Hexagon
Length 2 1/4
Locking Feature Strip or patch threads
Material Iron
Material Specification Ams 5731 assn std single material response or ams 5737 assn std single material response fastener
Min. Tensile Strength (psi) 160000 pounds per square inch
Specification Data 80205-nas1351 professional/industrial association standard
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 fed spec single treatment response fastener
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 1.000 inches minimum
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNRF
Thread Size 1/4
Width Across Flats 0.188 inches minimum and 0.190 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.

  • NAS1351-4-36P NAS 1/4-28 · 0.086 in · Flat chamfer · Steel
  • NAS1351-4-48 NAS 1/4-28 · 0.086 in · Flat chamfer · Steel
  • NAS1351C4-32 NAS 1/4-28 · 0.086 in · Flat chamfer · Steel
  • NAS1351C4-36 NAS 1/4-28 · 0.086 in · Flat chamfer · CRES
  • NAS1351C4-40 NAS 1/4-28 · 0.086 in · Flat chamfer · CRES

Looking for a specific part? Use the cross-reference lookup.

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