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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
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.438 in
LENGTH1.250 in (1-1/4)
THREAD LENGTHMaximum 1.250 in
THREAD
THREAD7/16-20
HEAD & DRIVE
HEADFlat chamfer
HEAD HEIGHTMinimum 0.430 in; maximum 0.437 in
HEAD DIAMETER0.642–0.656 in
WIDTH ACROSS FLATS0.375–0.379 in
MATERIAL & FINISH
MATERIALIron alloy 660
MATERIAL SPECAMS5731 — ASSN STD · AMS5737 — ASSN STD
FINISHPassivate
FINISH SPECQQ-P-35
MECHANICAL
TENSILE STRENGTH160,000 psi
HARDNESS33–42 HRC
STANDARDS & TRACEABILITY
NSN5305-01-378-9346
GOVERNING STANDARD80205-NAS1531
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
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.