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3540-030 — ROLLER,LINEAR-ROTARY MOTION

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

3540-030: ROLLER,LINEAR-ROTARY MOTION.

The ROLLER,LINEAR-ROTARY MOTION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, face_width: 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN, bore_length: 0.1542 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN, hub_diameter: 0.250 INCHES NOMINAL IN, outside_diameter: 0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN, special_features: MAGNETIC PARTICLE INSPECTION,SP-917,FSCM 66503. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-159-0877, 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
3540-030
NSN: 3120-00-159-0877
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 66503 — WOODWARD, INC. DIV FUEL SYSTEMS AND CONTROLS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
face_width0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
bore_length0.1542 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN
hub_diameter0.250 INCHES NOMINAL IN
outside_diameter0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
special_featuresMAGNETIC PARTICLE INSPECTION,SP-917,FSCM 66503
style_designatorPLAIN, PROTRUDING HUBS
surface_treatmentPASSIVATE
bore_inside_diameter0.1875 INCHES MINIMUM AND 0.1877 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
metallic_hardness_rating58.0 MINIMUM ROCKWELL C
criticality_code_justificationADGE AND BCXD
NSN3120-00-159-0877
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3540-030 · 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
•
HUB DIAMETER: 0.250 INCHES NOMINAL IN
•
BORE LENGTH: 0.1542 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: SP-151 FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE
•
CRITICALITY CODE JUSTIFICATION: ADGE AND BCXD
•
STYLE DESIGNATOR: PLAIN, PROTRUDING HUBS
•
OUTSIDE DIAMETER: 0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
HUB DIAMETER0.250 INCHES NOMINAL IN
BORE LENGTH0.1542 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONSP-151 FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE
CRITICALITY CODE JUSTIFICATIONADGE AND BCXD
STYLE DESIGNATORPLAIN, PROTRUDING HUBS
OUTSIDE DIAMETER0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
SPECIAL FEATURESMAGNETIC PARTICLE INSPECTION,SP-917,FSCM 66503
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL CORROSION RESISTING
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 3540-030?
3540-030 is a ROLLER,LINEAR-ROTARY MOTION.
What is the NSN for 3540-030?
3540-030 is cataloged in the U.S. Government catalog under NSN 3120-00-159-0877. 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.