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1050-4 — COUPLING HALF,SELF-SEALING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

1050-4: COUPLING HALF,SELF-SEALING.

The COUPLING HALF,SELF-SEALING is a the manufacturer industrial component. Key specifications include phase: TWO SINGLE VOLTAGE, width: 18.000 INCHES NOMINAL IN, length: 4.000 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, unit_type: MAGNETIC. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0258, 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
1050-4
NSN: 3110-00-100-0258
NIINs: 001000258, 002222119, 002405328, 002797695, 002889184, 003988284, 004459962, 005501154, 006143970, 007832907, 008336128, 008613511, 012269878, 012392295, 012850613, 013695227, 014706554
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
phaseTWO SINGLE VOLTAGE
width18.000 INCHES NOMINAL IN
length4.000 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
unit_typeMAGNETIC
body_styleTUBULAR, STEPPED
bore_shapeSTRAIGHT
case_shapeROUND
cone_width1.1420 INCHES NOMINAL IN
nut_height0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
scale_typeDIAL
NSN3110-00-100-0258
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1050-4 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: NORMAL ANGLE
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
CONE WIDTH: 1.1420 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 2.7500 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNORMAL ANGLE
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
CONE WIDTH1.1420 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.7500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
49369HReference document
Same NSN cross-reference
Reference document — Secondary reference
544794Reference document
Same NSN cross-reference
Reference document — Secondary reference
103845Reference document
Same NSN cross-reference
Reference document — Secondary reference
D10504Reference document
Same NSN cross-reference
Reference document — Secondary reference
K482Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
62AX102Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1050-4?
1050-4 is a COUPLING HALF,SELF-SEALING.
What parts can replace 1050-4?
There are 8 known substitutes for 1050-4: 49369H, 544794, 103845 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1050-4?
1050-4 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0258. 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.