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EMANON PART NO.
NAS501-4-3A
NAS501-4-3A is a bolt in steel corrosion resisting overall, passivate overall finish, 0.250 INCHES diameter and 15/32 length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.469 in (15/32)
THREAD LENGTHMinimum 0.407 in
GRIPNominal 0.062 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADHexagon
HEAD HEIGHTNominal 0.156 in
WIDTH ACROSS FLATS0.438 in nom
MATERIAL & FINISH
MATERIALSteel corrosion resisting overall
MATERIAL SPECQQ-S-763 — FED SPEC
FINISHPassivate overall
STANDARDS & TRACEABILITY
NSN5306-00-879-8834
FLIS · NSN 5306-00-879-8834 · retrieved 2026-08-09
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
Fastener Length: 15/32", Thread: 1/4-28, Thread Length: 13/32"
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.