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REFERENCE IMAGE
EMANON PART NO.
MS51957-81
MS51957-81 is a screw in steel, passivate finish, 0.250 INCHES diameter and 0.750 inches length.
Screw
REFERENCE IMAGEReference image — representative of the type, not the exact part; verify dimensions per specification.
SPECIFICATIONS
KEY DIMENSIONS
DIAMETER0.250 in
LENGTH0.750 in
THREAD LENGTH0.650–0.750 in
THREAD
THREAD0.250-20 UNC-2A right-hand
HEAD & DRIVE
HEADPan
HEAD HEIGHT0.162–0.175 in
MATERIAL & FINISH
MATERIALSteel
FINISHPassivate
MECHANICAL
TENSILE STRENGTH80,000 psi
STANDARDS & TRACEABILITY
NSN5305-00-082-6721
GOVERNING STANDARDMS51957-81
FLIS · NSN 5305-00-082-6721 · retrieved 2026-08-07
DOCUMENTS
✓Certificate of Conformance — included with every order
No drawing on file — request it
Size: 1/4-20 X 3/4, MS51957
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.