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EMANON PART NO.
NAS1801-4-16
NAS1801-4-16 is a screw in steel comp e4340 or steel comp 8740, cadmium and chromate finish, 0.250 INCHES diameter and 63/64 length.
Screw
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.984 in (63/64)
THREAD LENGTHMinimum 0.849 in; maximum 0.999 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
MATERIALSTEEL COMP E4340 OR STEEL COMP 8740
FINISHCADMIUM AND CHROMATE
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS36–40 HRC
STANDARDS & TRACEABILITY
NSN5305-01-244-4475
GOVERNING STANDARD80205-NAS1801
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
Length: 63/64", Thread: 1/4-28, Thread Length: 63/64", NAS1801 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.