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REFERENCE IMAGE
EMANON PART NO.
NAS6304-6
NAS6304-6 is a bolt in iron alloy 660 overall, cadmium overall and chromate overall finish, 0.250 INCHES diameter and 3/4 length.
Bolt
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.750 in (3/4)
THREAD LENGTH0.345–0.395 in
GRIP0.365–0.385 in
GRIP DIAMETER0.2485–0.2495 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADDished hexagon
HEAD HEIGHT0.125–0.140 in
WIDTH ACROSS FLATS0.430–0.439 in
MATERIAL & FINISH
MATERIALIron 660
MATERIAL SPECAMS 5731 or AMS 5737
FINISHCadmium and chromate
FINISH SPECQQ-P-416 TY 2 CL 2
MECHANICAL
TENSILE STRENGTH160,000 psi
STANDARDS & TRACEABILITY
NSN5306-00-492-3039
GOVERNING STANDARD80205-NAS6304
FLIS · NSN 5306-00-492-3039 · retrieved 2026-08-07
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Fastener Length: 3/4", Thread: 1/4-28, Thread Length: 25/64",
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.