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EMANON PART NO.
NAS6304U2
NAS6304U2 is a bolt in iron alloy 660 overall, 0.250 INCHES diameter and 0.480 inches minimum and 0.510 inches maximum length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHMinimum 0.480 in; maximum 0.510 in
THREAD LENGTHMinimum 0.345 in; maximum 0.395 in
GRIPMinimum 0.115 in; maximum 0.135 in
GRIP DIAMETER0.2490–0.2495 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADDished hexagon
HEAD HEIGHTMinimum 0.125 in; maximum 0.140 in
WIDTH ACROSS FLATS0.430–0.439 in
MATERIAL & FINISH
MATERIALIron alloy 660 overall
MATERIAL SPECAMS5731 — ASSN STD
MECHANICAL
TENSILE STRENGTH160,000 psi
STANDARDS & TRACEABILITY
NSN5306-00-492-2990
GOVERNING STANDARD80205-NAS6304
FLIS · NSN 5306-00-492-2990 · retrieved 2026-08-07
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
length: 0.495", grip: 0.125", thread: 1/4-28, hex head - short thread - unplated corrosion resistant steel
Emanon is a stocking distributor — quality-system certifications are held by the certified manufacturers we source from, not by Emanon. Every shipment carries manufacturer certifications and full lot traceability.