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EMANON PART NO.
NAS1351N4-20
NAS1351N4-20 is a screw in iron alloy 660, passivate finish, 0.250 INCHES diameter and Between 1.210 inches and 1.250 inches length.
Screw
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHBetween 1.210 inches and 1.250 inches
THREAD LENGTHMinimum 1.000 in
THREAD
THREAD0.250-28 UNRF-3A right-hand
HEAD & DRIVE
HEADFlat chamfer
HEAD HEIGHTMinimum 0.244 in; maximum 0.250 in
HEAD DIAMETER0.365–0.375 in
WIDTH ACROSS FLATS0.1875–0.1900 in
MATERIAL & FINISH
MATERIALIron alloy 660
MATERIAL SPECAMS 5731 — ASSN STD · AMS 5737 — ASSN STD
FINISHPassivate
FINISH SPECQQ-P-35
STANDARDS & TRACEABILITY
NSN5305-01-080-9184
GOVERNING STANDARD80205-NAS1351
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
NAS1351N4-20
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.