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REFERENCE IMAGE
EMANON PART NO.
MS21299-12
MS21299-12 is a washer in steel comp 4130, cadmium and chromate finish and 1-3/8 diameter.
Washer
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
INSIDE DIAMETER0.750 in (3/4)
OUTSIDE DIAMETER1.423–1.433 in
THICKNESS0.052–0.072 in
SHAPE
PERIPHERAL SHAPERound
CENTER HOLE SHAPERound
CROSS-SECTIONAL SHAPERectangular
MATERIAL & FINISH
MATERIALSteel 4130
MATERIAL SPECMIL-S-6758 or MIL-S-18729
FINISHCadmium and chromate
FINISH SPECQQ-P-416,TY 2,CL 2
MECHANICAL
HARDNESS39–45 HRC
STANDARDS & TRACEABILITY
NSN5310-01-202-2703
FLIS · NSN 5310-01-202-2703 · retrieved 2026-08-08
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Hole Diameter: 3/4", Diameter: 1-3/8", MS21299 series washer
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.