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Technical Data Sheet
PartsTable / COMPONENT / 161918
161918 ✓ 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 MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, body_width: 0.580 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, body_height: 0.080 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN, body_length: 1.380 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN, corner_shape: SQUARE OUTSIDE LEFT CORNER, overall_length: 0.7335 INCHES NOMINAL 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 3120-00-684-1781, 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
161918
NSN: 3120-00-684-1781
FSC: 3120
CAGE: 55284 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL DIV AEROSPACE-SOUTH BEND (WESTMOOR ST) (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
body_width0.580 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
body_height0.080 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
body_length1.380 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN
corner_shapeSQUARE OUTSIDE LEFT CORNER
overall_length0.7335 INCHES NOMINAL IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
features_providedHERMETICALLY SEALED AND PROGRAMMABLE AND POSITIVE OUTPUTS
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
surface_treatmentCADMIUM OUTSIDE DIAMETER SURFACE OF BODY
inclosure_materialCERAMIC AND GLASS
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
NSN3120-00-684-1781
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 161918 · 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
•
MATERIAL: STEEL COMP 4130 OVERALL
•
BODY INSIDE DIAMETER: 1.2140 INCHES MINIMUM AND 1.2240 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 1.4391 INCHES MINIMUM AND 1.4401 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE OUTSIDE RIGHT CORNER
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 4130 OVERALL
OVERALL LENGTH0.7335 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.2140 INCHES MINIMUM AND 1.2240 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER1.4391 INCHES MINIMUM AND 1.4401 INCHES MAXIMUM IN
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
CORNER SHAPECHAMFERED INSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
161529Interchangeable
interchangeable cross-reference
interchangeable
161918Interchangeable
interchangeable cross-reference
interchangeable
ROM/PROM FAMILY 041Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 161918?
161918 is a MICROCIRCUIT,DIGITAL.
What parts can replace 161918?
There are 3 known substitutes for 161918: 161529, 161918, ROM/PROM FAMILY 041. Substitute compatibility should be verified for your specific system.
What is the NSN for 161918?
161918 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-684-1781. 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