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EMANON PART NO.
AN4C4A
AN4C4A is a bolt in steel comp 431, passivate finish, 0.250 INCHES diameter and Between 0.516 inches and 0.562 inches length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHBetween 0.516 inches and 0.562 inches
THREAD LENGTHMinimum 0.438 in; maximum 0.516 in
GRIPBetween 0.047 inches and 0.078 inches
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADHexagon
HEAD HEIGHTMinimum 0.140 in; maximum 0.172 in
WIDTH ACROSS FLATS0.428–0.440 in
MATERIAL & FINISH
MATERIALSteel comp 431
MATERIAL SPECMIL-S-18732 — MIL SPEC
FINISHPassivate
MECHANICAL
TENSILE STRENGTH125,000 psi
HARDNESS26–32 HRC
STANDARDS & TRACEABILITY
NSN5306-00-150-9873
GOVERNING STANDARDAN4C4A
FLIS · NSN 5306-00-150-9873 · retrieved 2026-08-07
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
length: 17/32", grip: 1/16", thread: 1/4-28, corrosion resistant steel, undrilled shank, AN4 series bolt
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.