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REFERENCE IMAGE
EMANON PART NO.
MS51972-4
MS51972-4 is a nut in steel comp, passivate finish and 0.438 INCHES diameter.
Nut
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.438 in
WIDTH ACROSS FLATS0.675–0.688 in
THREAD
THREAD7/16-20
MATERIAL & FINISH
MATERIALSteel
MATERIAL SPEC66 FED STD ALL MATERIAL RESPONSES
FINISHPassivate
FINISH SPECQQ-P-35
MECHANICAL
HARDNESSNot rated
STANDARDS & TRACEABILITY
NSN5310-00-989-5944
GOVERNING STANDARDMS51972-4
FLIS · NSN 5310-00-989-5944 · retrieved 2026-08-08
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Thread: 7/16-20, Thread Size: 1/2", Nut Height: 3/8", Head Width: 5/8
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.