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EMANON PART NO.
NAS6304-34D
NAS6304-34D is a bolt in iron alloy 660 overall, cadmium overall and chromate overallchromium grip finish, 0.250 INCHES diameter and 2-1/2 length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH2.500 in (2-1/2)
THREAD LENGTHNominal 0.370 in
GRIPMinimum 2.115 in; maximum 2.135 in
GRIP DIAMETER0.2485–0.2495 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADDished hexagon
HEAD HEIGHTMinimum 0.125 in; maximum 0.140 in
WIDTH ACROSS FLATS0.429–0.439 in
MATERIAL & FINISH
MATERIALIron alloy 660 overall
MATERIAL SPECAMS 5731 — ASSN STD · AMS 5737 — ASSN STD
FINISHCadmium overall and chromate overallchromium grip
FINISH SPECQQ-P-416,TY 2,CL 2 QQ-C-320 CL 2 GRIP
MECHANICAL
TENSILE STRENGTH160,000 psi
STANDARDS & TRACEABILITY
NSN5306-01-362-7256
GOVERNING STANDARD80205-NAS6304
FLIS · NSN 5306-01-362-7256 · 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: 2-1/2", Thread: 1/4-28, Thread Length: "
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.