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EMANON PART NO.
NAS6205-40D
NAS6205-40D is a bolt in steel comp e4340 or steel comp 8740, cadmium finish, 0.3125 INCHES diameter and 2-61/64 length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.3125 in
LENGTH2.953 in (2-61/64)
THREAD LENGTHNominal 0.438 in
GRIPBetween 2.490 inches and 2.510 inches
GRIP DIAMETER0.3110–0.3120 in
THREAD
THREAD5/16-24
HEAD & DRIVE
HEADDished hexagon
HEAD HEIGHTMinimum 0.156 in; maximum 0.171 in
WIDTH ACROSS FLATS0.492–0.502 in
MATERIAL & FINISH
MATERIALSteel comp e4340 or steel comp 8740
MATERIAL SPECMIL-S-5000 — MIL SPEC · MIL-S-6049 — MIL SPEC · AMS 6322 — ASSN STD
FINISHCadmium
FINISH SPECQQ-C-320 CL 2 THREADS
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5306-01-208-9077
GOVERNING STANDARD80205-NAS6205
FLIS · NSN 5306-01-208-9077 · 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: 2-61/64", Thread: 5/16-24, Thread Length: 7/16
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.