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EMANON PART NO.
NAS623-4-23
NAS623-4-23 is a screw in steel comp 4140 or steel comp 4340 or steel comp 8740, cadmium finish, 0.250 INCHES diameter and 1.739 INCHES MINIMUM AND 1.769 INCHES MAXIMUM length.
Screw
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHMinimum 1.739 in; maximum 1.769 in
THREAD LENGTHNominal 0.316 in
THREAD
THREAD0.250-28 unified national joint fine (UNJF)-3A right-hand
HEAD & DRIVE
HEAD HEIGHTMinimum 0.162 in; maximum 0.175 in
HEAD DIAMETER0.473–0.492 in
MATERIAL & FINISH
MATERIALSTEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740
FINISHCADMIUM
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESSRockwell c minimum 36.0 and rockwell c maximum 40.0
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
NAS623-4-23
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.