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EMANON PART NO.
NAS428K4A12
NAS428K4A12 is a bolt in steel comp 4037 or steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740 or steel comp 4140, cadmium and chromate finish, 0.250 INCHES diameter and 1.250 INCHES NOMINAL length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHNominal 1.250 in
THREAD LENGTHMinimum 1.188 in; maximum 1.219 in
GRIPMinimum 0.031 in; maximum 0.062 in
THREAD
THREAD0.250-28 UNF-3A right-hand
HEAD & DRIVE
HEAD HEIGHTNominal 0.141 in
WIDTH ACROSS FLATS0.438 in nom
MATERIAL & FINISH
MATERIALSTEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140
FINISHCADMIUM AND CHROMATE
MECHANICAL
TENSILE STRENGTH125,000 psi
HARDNESSRockwell c minimum 26.0 and rockwell c maximum 32.0
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
NAS428K4A12
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.