PartsTable
Technical Data Sheet
Download PDF

74A410521-2001 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

74A410521-2001: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 OR COPPER ALLOY 173 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 3.7400 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES INTERMEDIATE LAYER, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 1.8400 INCHES MINIMUM AND 1.8450 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-121-8577, 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
74A410521-2001
NSN: 3120-01-121-8577
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 172 OR COPPER ALLOY 173 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length3.7400 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES INTERMEDIATE LAYER
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter1.8400 INCHES MINIMUM AND 1.8450 INCHES MAXIMUM IN
body_outside_diameter2.0640 INCHES MINIMUM AND 2.0655 INCHES MAXIMUM IN
material_document_and_classificationQQ-C-530,HT FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN3120-01-121-8577
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 74A410521-2001 · 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 ALL CORNERS
•
BODY OUTSIDE DIAMETER: 2.0640 INCHES MINIMUM AND 2.0655 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-530,HT FED SPEC ALL MATERIAL RESPONSES OVERALL
•
BODY INSIDE DIAMETER: 1.8400 INCHES MINIMUM AND 1.8450 INCHES MAXIMUM IN
•
TEST DATA DOCUMENT: 76301-PS21202 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES INTERMEDIATE LAYER
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER2.0640 INCHES MINIMUM AND 2.0655 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-530,HT FED SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH3.7400 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.8400 INCHES MINIMUM AND 1.8450 INCHES MAXIMUM IN
TEST DATA DOCUMENT76301-PS21202 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MATERIALCOPPER ALLOY 172 OR COPPER ALLOY 173 OVERALL
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 1
10107787Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 74A410521-2001?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 74A410521-2001?
74A410521-2001 is a BUSHING,SLEEVE.
What parts can replace 74A410521-2001?
There is 1 known substitute for 74A410521-2001: 10107787. Substitute compatibility should be verified for your specific system.
What is the NSN for 74A410521-2001?
74A410521-2001 is cataloged in the U.S. Government catalog under NSN 3120-01-121-8577. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 74A410521-2001

✓ 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.