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1076749 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

1076749: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include width: 8.000 INCHES NOMINAL IN, length: 24.000 INCHES NOMINAL IN, material: ALUMINUM ALLOY 2024 OVERALL, corner_shape: SQUARE INSIDE RIGHT CORNER, flange_width: 0.1110 INCHES NOMINAL IN, overall_length: 0.3750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-223-3857, 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
1076749
NSN: 3120-00-223-3857
NIINs: 002233857, 002885985
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 72314 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. (USA)
SPECIFICATIONS
width8.000 INCHES NOMINAL IN
length24.000 INCHES NOMINAL IN
materialALUMINUM ALLOY 2024 OVERALL
corner_shapeSQUARE INSIDE RIGHT CORNER
flange_width0.1110 INCHES NOMINAL IN
overall_length0.3750 INCHES NOMINAL IN
style_designatorSOLID, EXTERNAL FLANGE ONE END, INTERNAL FLANGE ONE END
basic_shape_styleSOLID
surface_treatmentANODIZE OVERALL
lamination_quantity10
body_inside_diameter0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
lamination_thickness0.003 INCHES NOMINAL IN
NSN3120-00-223-3857
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 1076749 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LEFT INTERNAL FLANGE WIDTH: 0.1090 INCHES MINIMUM AND 0.1100 INCHES MAXIMUM IN
•
LEFT INTERNAL FLANGE HOLE DIAMETER: 0.3125 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE INSIDE RIGHT CORNER
TECHNICAL CHARACTERISTICS
LEFT INTERNAL FLANGE WIDTH0.1090 INCHES MINIMUM AND 0.1100 INCHES MAXIMUM IN
LEFT INTERNAL FLANGE HOLE DIAMETER0.3125 INCHES NOMINAL IN
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPECHAMFERED LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPEROUND LEFT FLANGE BODY CORNER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
FLANGE OUTSIDE DIAMETER0.8750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1076749?
1076749 is a SPRING,HELICAL,EXTENSION.
What is the NSN for 1076749?
1076749 is cataloged in the U.S. Government catalog under NSN 3120-00-223-3857. 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.