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Technical Data Sheet
PartsTable / COMPONENT / 521-208-100-100-000
521-208-100-100-000 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, slip_nut: INCLUDED, nut_style: HEXAGON, stem_type: RISING, body_width: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, nut_height: 0.375 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-956-8889, 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
521-208-100-100-000
NSN: 3120-00-956-8889
FSC: 3120
CAGE: 04613 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
slip_nutINCLUDED
nut_styleHEXAGON
stem_typeRISING
body_width1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
nut_height0.375 INCHES NOMINAL IN
valve_size2.000 INCHES IN
body_height1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
body_length1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
bonnet_typeINSIDE SCREW
design_typeELBOW
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
NSN3120-00-956-8889
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 521-208-100-100-000 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
MIL-H-13444Interchangeable
interchangeable cross-reference
interchangeable
5740929Interchangeable
interchangeable cross-reference
interchangeable
7281010Interchangeable
interchangeable cross-reference
interchangeable
20810Interchangeable
interchangeable cross-reference
interchangeable
H1012Interchangeable
interchangeable cross-reference
interchangeable
PT9-650Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 521-208-100-100-000?
521-208-100-100-000 is a BUSHING,SLEEVE.
What parts can replace 521-208-100-100-000?
There are 17 known substitutes for 521-208-100-100-000: MIL-H-13444, 5740929, 7281010 and 14 more. Substitute compatibility should be verified for your specific system.
Is 521-208-100-100-000 still available?
521-208-100-100-000 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026