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Technical Data Sheet
PartsTable / COMPONENT / 2983-05ALT4PCQ3
2983-05ALT4PCQ3 ✓ 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 MOUNT,GUIDED MISSILE LAUNCHER is a the manufacturer industrial component. Key specifications include material: OIL LUBRICATING LUBRICATION, corner_shape: SQUARE ALL CORNERS, overall_length: 1.7425 INCHES MINIMUM AND 1.7575 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 1.0000 INCHES MINIMUM AND 1.0010 INCHES MAXIMUM IN, body_outside_diameter: 1.2510 INCHES MINIMUM AND 1.2520 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-661-3544, 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
2983-05ALT4PCQ3
NSN: 3120-00-661-3544
FSC: 3120
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
corner_shapeSQUARE ALL CORNERS
overall_length1.7425 INCHES MINIMUM AND 1.7575 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter1.0000 INCHES MINIMUM AND 1.0010 INCHES MAXIMUM IN
body_outside_diameter1.2510 INCHES MINIMUM AND 1.2520 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 TYPE AND B COMPOSITION
material_document_and_classificationMIL-B-5687,TY 1,COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-661-3544
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2983-05ALT4PCQ3 · 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
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL: OIL LUBRICATING LUBRICATION
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND B COMPOSITION
•
CORNER SHAPE: SQUARE ALL CORNERS
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5687,TY 1,COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 1.0000 INCHES MINIMUM AND 1.0010 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIALOIL LUBRICATING LUBRICATION
NONDEFINITIVE SPEC/STD DATA1 TYPE AND B COMPOSITION
CORNER SHAPESQUARE ALL CORNERS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687,TY 1,COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
BODY INSIDE DIAMETER1.0000 INCHES MINIMUM AND 1.0010 INCHES MAXIMUM IN
OVERALL LENGTH1.7425 INCHES MINIMUM AND 1.7575 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER1.2510 INCHES MINIMUM AND 1.2520 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
MILB5687TYPE1C0MP0SITI0NAInterchangeable
interchangeable cross-reference
interchangeable
5226513Interchangeable
interchangeable cross-reference
interchangeable
MILB5687TYPE1C0MP0SITI0NBInterchangeable
interchangeable cross-reference
interchangeable
A345776Interchangeable
interchangeable cross-reference
interchangeable
03-047-399Interchangeable
interchangeable cross-reference
interchangeable
A418-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2983-05ALT4PCQ3?
2983-05ALT4PCQ3 is a MOUNT,GUIDED MISSILE LAUNCHER.
What parts can replace 2983-05ALT4PCQ3?
There are 24 known substitutes for 2983-05ALT4PCQ3: MILB5687TYPE1C0MP0SITI0NA, 5226513, MILB5687TYPE1C0MP0SITI0NB and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2983-05ALT4PCQ3?
2983-05ALT4PCQ3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-661-3544. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026