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91228 — LEAD,ELECTRICAL

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

91228: LEAD,ELECTRICAL.

The LEAD,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1141 OVERALL, head_style: HEXAGON, head_height: 0.375 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.750 INCHES MINIMUM IN, overall_length: 1.3750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-102-4643, 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
91228
NSN: 3120-00-102-4643
NIINs: 001024643, 002153957, 003140392, 015291658
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 0BR59 — SIEMENS GOVERNMENT TECHNOLOGIES, INC. DBA SGT DRESSER-RAND DIV SGT DRESSER-RAND (USA)
SPECIFICATIONS
materialSTEEL COMP 1141 OVERALL
head_styleHEXAGON
head_height0.375 INCHES NOMINAL IN
thread_class2A A
thread_length0.750 INCHES MINIMUM IN
overall_length1.3750 INCHES NOMINAL IN
fastener_length3.875 INCHES NOMINAL IN
hardness_rating29.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
special_featuresCOTTER PIN HOLES DRILLED TRANSVERSALLY AT 90 DEGT0380
thread_directionRIGHT-HAND
features_providedUNFINISHED HEAD
width_between_flats1.500 INCHES NOMINAL IN
NSN3120-00-102-4643
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 91228 · 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
•
BODY OUTSIDE DIAMETER: 1.5938 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.0020 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER1.5938 INCHES NOMINAL IN
OVERALL LENGTH1.3750 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.0020 INCHES NOMINAL IN
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 91228?
91228 is a LEAD,ELECTRICAL.
What is the NSN for 91228?
91228 is cataloged in the U.S. Government catalog under NSN 3120-00-102-4643. 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.