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A3A1657 — COLLAR,SHAFT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A3A1657: COLLAR,SHAFT.

The COLLAR,SHAFT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061, thickness: 0.375 INCHES NOMINAL IN, bore_diameter: 1.0090 INCHES NOMINAL IN, outside_diameter: 1.125 INCHES NOMINAL IN, style_designator: PLAIN ROUND, surface_treatment: ANODIZE. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-445-7423, 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
A3A1657
NSN: 3040-00-445-7423
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 76912 — ORO MANUFACTURING CO (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
thickness0.375 INCHES NOMINAL IN
bore_diameter1.0090 INCHES NOMINAL IN
outside_diameter1.125 INCHES NOMINAL IN
style_designatorPLAIN ROUND
surface_treatmentANODIZE
securing_hole_quantity2
hole_diameter_and_location0.0469 INCHES NOMINAL SINGLE HOLE IN
securing_hole_type_and_locationUNTHREADED SINGLE HOLE
material_document_and_classificationWW-T700/6B, T6 FED SPEC SINGLE MATERIAL RESPONSE
angle_between_centerlines_of_securing_holes_in_deg180.0
NSN3040-00-445-7423
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COLLAR,SHAFT TITLE COMPONENT PN A3A1657 MFR COLLAR,SHAFT
KEY FEATURES
•
SECURING HOLE TYPE AND LOCATION: UNTHREADED SINGLE HOLE
•
STYLE DESIGNATOR: PLAIN ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: WW-T700/6B, T6 FED SPEC SINGLE MATERIAL RESPONSE
•
OUTSIDE DIAMETER: 1.125 INCHES NOMINAL IN
•
HOLE DIAMETER AND LOCATION: 0.0469 INCHES NOMINAL SINGLE HOLE IN
•
ANGLE BETWEEN CENTERLINES OF SECURING HOLES IN DEG: 180.0
•
SECURING HOLE QUANTITY: 2
•
SURFACE TREATMENT: ANODIZE
TECHNICAL CHARACTERISTICS
SECURING HOLE TYPE AND LOCATIONUNTHREADED SINGLE HOLE
STYLE DESIGNATORPLAIN ROUND
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T700/6B, T6 FED SPEC SINGLE MATERIAL RESPONSE
OUTSIDE DIAMETER1.125 INCHES NOMINAL IN
HOLE DIAMETER AND LOCATION0.0469 INCHES NOMINAL SINGLE HOLE IN
ANGLE BETWEEN CENTERLINES OF SECURING HOLES IN DEG180.0
SECURING HOLE QUANTITY2
SURFACE TREATMENTANODIZE
BORE DIAMETER1.0090 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 6061
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: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is A3A1657?
A3A1657 is a COLLAR,SHAFT.
What is the NSN for A3A1657?
A3A1657 is cataloged in the U.S. Government catalog under NSN 3040-00-445-7423. 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.