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REFERENCE IMAGE
EMANON PART NO.
NAS623-4-3
NAS623-4-3 is a screw in 0.250 INCHES diameter and 0.489 inches minimum and 0.519 inches maximum length.
Screw
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.489–0.519 in
THREAD LENGTH0.291–0.341 in
GRIP0.188
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADPan
HEAD HEIGHT0.162–0.175 in
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5305-00-687-3295
GOVERNING STANDARD80205-NAS623
FLIS · NSN 5305-00-687-3295 · retrieved 2026-08-07
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
length: 0.504", grip: 0.188", thread: 1/4-28, pan head, short thread, philips recess, cadmium plated alloy steel, NAS623 series screw
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.