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REFERENCE IMAGE
EMANON PART NO.
MS9503-04
MS9503-04 is a bolt in iron alloy 660 overall, 0.375 INCHES diameter and 5/8 length.
Bolt · listed as MS9503-04 INSERT
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.375 in
LENGTH0.625 in (5/8)
THREAD LENGTH0.517–0.537 in
GRIP0.088–0.108 in
THREAD
THREAD3/8-24
HEAD & DRIVE
HEADHexagon
HEAD HEIGHT0.219 in nom
WIDTH ACROSS FLATS0.553–0.564 in
MATERIAL & FINISH
MATERIALIron 660
MATERIAL SPECAMS 5731
MECHANICAL
HARDNESS248.0 brinell standard minimum and 341.0 brinell standard maximum
STANDARDS & TRACEABILITY
NSN5306-00-478-0332
GOVERNING STANDARDMS9503-04
FLIS · NSN 5306-00-478-0332 · retrieved 2026-08-09
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Fastener Length: 5/8", Hole Diameter: 1/16", Thread: 3/8-24, Thread Length: 17/32"
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.