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EMANON PART NO.
NAS1587-4L
NAS1587-4L is a washer in steel comp 321 or steel comp 347, passivate finish and 17/32 diameter.
Washer
SPECIFICATIONS
KEY DIMENSIONS
INSIDE DIAMETER0.250 in (1/4)
OUTSIDE DIAMETER0.521–0.541 in
THICKNESS0.031 in (1/32)
SHAPE
PERIPHERAL SHAPERound
CENTER HOLE SHAPERound
CROSS-SECTIONAL SHAPERectangular
MATERIAL & FINISH
MATERIALSteel comp 321 or steel comp 347
MATERIAL SPECMIL-S-6721 — MIL SPEC · QQ-S-763,COND A — FED SPEC · QQ-S-763,COND A — FED SPEC · MIL-S-6721 — MIL SPEC
FINISHPassivate
FINISH SPECMIL-S-5002
STANDARDS & TRACEABILITY
NSN5310-00-238-7359
GOVERNING STANDARD80205-NAS1587
FLIS · NSN 5310-00-238-7359 · retrieved 2026-08-08
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
Hole Diameter: 1/4", Diameter: 17/32", Thickness: 1/32",
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.