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EMANON PART NO.
NAS517-4-1
NAS517-4-1 is a screw in steel, cadmium and chromate finish, 0.250 INCHES diameter and Between 0.516 inches and 0.561 inches length.
Screw
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHBetween 0.516 inches and 0.561 inches
THREAD LENGTHMinimum 0.385 in; maximum 0.531 in
THREAD
THREAD1/4-28 shear - close tolerance screw - alloy steel
HEAD & DRIVE
HEADFlat countersunk
HEAD DIAMETER0.452–0.510 in
MATERIAL & FINISH
MATERIALSteel
FINISHCadmium and chromate
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5305-00-637-6949
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
length: 0.531", thread: 1/4-28 shear - close tolerance screw - alloy steel
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.