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128BM11137-1 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

128BM11137-1: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, corner_shape: SQUARE OUTSIDE RIGHT CORNER, flange_width: 0.0600 INCHES NOMINAL IN, overall_length: 0.4250 INCHES MINIMUM AND 0.4350 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES INTERMEDIATE LAYER, style_designator: SOLID, EXTERNAL FLANGE ONE END. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-910-4692, 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
128BM11137-1
NSN: 3120-00-910-4692
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
corner_shapeSQUARE OUTSIDE RIGHT CORNER
flange_width0.0600 INCHES NOMINAL IN
overall_length0.4250 INCHES MINIMUM AND 0.4350 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES INTERMEDIATE LAYER
style_designatorSOLID, EXTERNAL FLANGE ONE END
surface_treatmentANODIZE OVERALL
body_inside_diameter0.3750 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
body_outside_diameter0.54204 INCHES MINIMUM AND 0.5520 INCHES MAXIMUM IN
flange_outside_diameter0.8750 INCHES NOMINAL IN
material_document_and_classificationQQ-A-277 T6511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationGSS 9031 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN3120-00-910-4692
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 128BM11137-1 · 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
•
SURFACE FINISH: 125.0 MICROINCHES INTERMEDIATE LAYER
•
CORNER SHAPE: SQUARE INSIDE RIGHT CORNER
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: GSS 9031 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES INTERMEDIATE LAYER
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE LEFT FLANGE BODY CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONGSS 9031 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL
FLANGE OUTSIDE DIAMETER0.8750 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.54204 INCHES MINIMUM AND 0.5520 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
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 128BM11137-1?
128BM11137-1 is a BUSHING,SLEEVE.
What is the NSN for 128BM11137-1?
128BM11137-1 is cataloged in the U.S. Government catalog under NSN 3120-00-910-4692. 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.