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EMANON PART NO.
NAS1351-4-20
NAS1351-4-20 is a screw in steel, 0.250 INCHES diameter and Between 1.234 inches and 1.281 inches length.
Screw
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHBetween 1.234 inches and 1.281 inches
THREAD LENGTHMinimum 1.000 in
THREAD
THREAD0.250-28 UNF-3A right-hand
HEAD & DRIVE
HEADFlat chamfer
HEAD HEIGHTMinimum 0.244 in; maximum 0.250 in
HEAD DIAMETER0.365–0.375 in
WIDTH ACROSS FLATS0.188–0.190 in
MATERIAL & FINISH
MATERIALSteel
MATERIAL SPEC66 — FED STD
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–45 HRC
STANDARDS & TRACEABILITY
NSN5305-00-928-6858
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
Steel alloy, flat head, NAS1351 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.