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A556-254 — A556-254

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A556-254: A556-254.

The A556-254 is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, overall_length: 0.422 INCHES NOMINAL IN, style_designator: CRESCENT, HOOK STOP, material_thickness: 0.078 INCHES NOMINAL IN, pivot_pin_hole_diameter: 0.1253 INCHES MINIMUM AND 0.1258 INCHES MAXIMUM IN, length_from_pivot_pinhole_centerline_to_point_of_engagement: 0.297 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-337-7616, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A556-254
NSN: 3040-00-337-7616
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 72314 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY
overall_length0.422 INCHES NOMINAL IN
style_designatorCRESCENT, HOOK STOP
material_thickness0.078 INCHES NOMINAL IN
pivot_pin_hole_diameter0.1253 INCHES MINIMUM AND 0.1258 INCHES MAXIMUM IN
length_from_pivot_pinhole_centerline_to_point_of_engagement0.297 INCHES NOMINAL IN
NSN3040-00-337-7616
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available A556-254 TITLE COMPONENT PN A556-254 MFR A556-254
KEY FEATURES
•
LENGTH FROM PIVOT PINHOLE CENTERLINE TO POINT OF ENGAGEMENT: 0.297 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CRESCENT, HOOK STOP
•
MATERIAL THICKNESS: 0.078 INCHES NOMINAL IN
•
PIVOT PIN HOLE DIAMETER: 0.1253 INCHES MINIMUM AND 0.1258 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
LENGTH FROM PIVOT PINHOLE CENTERLINE TO POINT OF ENGAGEMENT0.297 INCHES NOMINAL IN
STYLE DESIGNATORCRESCENT, HOOK STOP
OVERALL LENGTH0.422 INCHES NOMINAL IN
MATERIAL THICKNESS0.078 INCHES NOMINAL IN
PIVOT PIN HOLE DIAMETER0.1253 INCHES MINIMUM AND 0.1258 INCHES MAXIMUM IN
SPECIAL FEATURESDEPTH FROM PIVOT PINHOLE CENTERLINE TO POINT OF ENGAGEMENT:0.063 IN.NOM;LENGTH FROM PIVOT PINHOLE CENTERLINE TO POINT OF ENGAGEMENT:0.297 IN.NOM;SURFACE FINISH:ZINC PLATE DICHROMATE SEAL FINISH;FSC APPLICATION DATA:0-15 RECORDING CAMERA IN
MATERIALCOPPER ALLOY
OTHER ITEMS IN FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046 3040-00-001-0047 3040-00-001-0048 3040-00-001-0068 3040-00-001-0077 3040-00-001-0078 3040-00-001-0089 3040-00-001-1224
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A556-254?
A556-254 is a A556-254.
What is the NSN for A556-254?
A556-254 is cataloged in the U.S. Government catalog under NSN 3040-00-337-7616. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.