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EMANON PART NO.
AN565BC428H5
AN565BC428H5 is a screw in steel comp 303 or steel comp 303se, passivate finish, 0.250 INCHES diameter and 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM length.
Screw
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTHMinimum 0.302 in; maximum 0.322 in
THREAD
THREAD0.250-28 UNC-3A right-hand
HEAD & DRIVE
HEADC101 headless
WIDTH ACROSS FLATS0.125–0.127 in
MATERIAL & FINISH
MATERIALSTEEL COMP 303 OR STEEL COMP 303SE
MATERIAL SPECMIL-S-7720 — MIL SPEC
FINISHPASSIVATE
FINISH SPECQQ-P-35
MECHANICAL
HARDNESS45–53 HRC
STANDARDS & TRACEABILITY
NSN5305-01-414-8978
GOVERNING STANDARDAN565BC428H5
FLIS · NSN 5305-01-414-8978 · retrieved 2026-08-09
DOCUMENTS
✓Certificate of Conformance & test reports available for most products (standard cert fees apply)
No drawing on file — request it
AN565BC428H5
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.