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EMANON PART NO.
NAS1802-4-12
NAS1802-4-12 is a screw in iron alloy 660, passivate finish, 0.250 INCHES diameter and 25/32 length.
Screw
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.781 in (25/32)
THREAD LENGTHMinimum 0.663 in; maximum 0.781 in
THREAD
THREAD1/4-28
HEAD & DRIVE
HEADHexagon
HEAD HEIGHTMinimum 0.125 in; maximum 0.140 in
WIDTH ACROSS FLATS0.367–0.376 in
MATERIAL & FINISH
MATERIALIRON ALLOY 660
FINISHPASSIVATE
MECHANICAL
TENSILE STRENGTH160,000 psi
STANDARDS & TRACEABILITY
NSN5305-01-155-6683
GOVERNING STANDARD80205-NAS1802
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
Fastener Length: 25/32", Thread: 1/4-28, Thread Length: 25/32",
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.