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EMANON PART NO.
NAS1304-1
NAS1304-1 is a bolt in steel comp 4140 or steel comp e4340 or steel comp 4340 or steel comp 8740, 0.250 INCHES diameter and 0.498 INCHES NOMINAL length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHNominal 0.498 in
THREAD LENGTHNominal 0.425 in
GRIPMinimum 0.052 in; maximum 0.072 in
GRIP DIAMETER0.188–0.189 in
THREAD
THREAD0.250-28 unified national joint fine (UNJF)-3A right-hand
HEAD & DRIVE
HEAD HEIGHTMinimum 0.125 in; maximum 0.140 in
WIDTH ACROSS FLATS0.430–0.439 in
MATERIAL & FINISH
MATERIALSTEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
NAS1304-1
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.