← BACK TO RESULTS
REFERENCE IMAGE
EMANON PART NO.
NAS1351N7-20
NAS1351N7-20 is a screw in iron alloy 660, passivate finish, 0.438 INCHES diameter and 1-1/4 length.
Screw
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.438 in
LENGTH1.250 in (1-1/4)
THREAD LENGTH1.250 in MAXIMUM
THREAD
THREAD7/16-20
HEAD & DRIVE
HEADFlat chamfer
HEAD HEIGHT0.430–0.437 in
WIDTH ACROSS FLATS0.375–0.379 in
MATERIAL & FINISH
MATERIALIron 660
MATERIAL SPECAMS5731 AND AMS5737
FINISHPassivate
FINISH SPECQQ-P-35
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS33–42 HRC
STANDARDS & TRACEABILITY
NSN5305-01-378-9346
GOVERNING STANDARD80205-NAS1531
FLIS · NSN 5305-01-378-9346 · retrieved 2026-08-09
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Fastener Length: 1-1/4", Thread: 7/16-20, Head Width: 3/8", Thread Length: 1-1/4
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.