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REFERENCE IMAGE
EMANON PART NO.
MS51957-80B
MS51957-80B is a screw in 0.250 INCHES diameter and 0.594 inches minimum and 0.625 inches maximum length.
Screw
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.594–0.625 in
THREAD LENGTH0.494–0.625 in
THREAD
THREAD0.250-20 UNC-2A right-hand
HEAD & DRIVE
HEADPan
HEAD HEIGHT0.162–0.175 in
MECHANICAL
TENSILE STRENGTH80,000 psi
STANDARDS & TRACEABILITY
NSN5305-01-059-1914
GOVERNING STANDARDMS51957-80B
FLIS · NSN 5305-01-059-1914 · retrieved 2026-08-09
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
MS51957-80B Machine Screw
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.