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EMANON PART NO.
NAS1304-21W
NAS1304-21W is a bolt in steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740, cadmium finish, 0.250 INCHES diameter and 1.722 INCHES MINIMUM AND 1.752 INCHES MAXIMUM length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHMinimum 1.722 in; maximum 1.752 in
THREAD LENGTHMinimum 0.400 in; maximum 0.450 in
GRIPMinimum 1.302 in; maximum 1.322 in
GRIP DIAMETER0.2485–0.2495 in
THREAD
THREAD0.250-28 UNF-3A right-hand
HEAD & DRIVE
HEAD HEIGHTNominal 0.125 in
WIDTH ACROSS FLATS0.430–0.439 in
MATERIAL & FINISH
MATERIALSTEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 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
NAS1304-21W
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.