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REFERENCE IMAGE
EMANON PART NO.
NAS1352N4-28
NAS1352N4-28 is a screw in iron alloy 660, passivate finish, 0.250 INCHES diameter and 1-23/32 length.
Screw
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH1.719 in (1-23/32)
THREAD LENGTH1.000 in MINIMUM
THREAD
THREAD1/4-20
HEAD & DRIVE
HEADFlat chamfer
HEAD HEIGHT0.244–0.250 in
WIDTH ACROSS FLATS0.1875–0.1900 in
MATERIAL & FINISH
MATERIALIron 660
MATERIAL SPECAMS5731 or AMS5737
FINISHPassivate
FINISH SPECQQ-P-35
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS33–42 HRC
STANDARDS & TRACEABILITY
NSN5305-01-379-6048
GOVERNING STANDARD80205-NAS1531
FLIS · NSN 5305-01-379-6048 · retrieved 2026-08-09
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Fastener Length: 1-23/32", Thread: 1/4-20, Head Width: 3/16", Thread Length: 1-1/64
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.