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EMANON PART NO.
NAS501-4-21A
NAS501-4-21A is a bolt in steel comp 321, 0.250 INCHES diameter and 2.140 INCHES MINIMUM AND 2.187 INCHES MAXIMUM length.
Bolt
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHMinimum 2.140 in; maximum 2.187 in
THREAD LENGTHMinimum 0.514 in; maximum 0.537 in
GRIPMinimum 1.673 in; maximum 1.703 in
THREAD
THREAD0.250-28 UNF-3A right-hand
HEAD & DRIVE
HEAD HEIGHTMinimum 0.140 in; maximum 0.172 in
WIDTH ACROSS FLATS0.428–0.440 in
MATERIAL & FINISH
MATERIALSTEEL COMP 321
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
NAS501-4-21A
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.