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12274444 — HOUSING,BEARING UNIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

12274444: HOUSING,BEARING UNIT.

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, bore_diameter: 5.9975 INCHES MINIMUM AND 5.9990 INCHES MAXIMUM IN, housing_length: 3.120 INCHES NOMINAL IN, flange_thickness: 0.620 INCHES NOMINAL IN, housing_diameter: 5.880 INCHES NOMINAL IN, style_designator: FLANGE BLOCK. This part is cataloged in the U.S.

Government catalog under NSN 3130-01-063-5845, 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
12274444
NSN: 3130-01-063-5845
FSC: 3130 — Bearings, Mounted
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
bore_diameter5.9975 INCHES MINIMUM AND 5.9990 INCHES MAXIMUM IN
housing_length3.120 INCHES NOMINAL IN
flange_thickness0.620 INCHES NOMINAL IN
housing_diameter5.880 INCHES NOMINAL IN
style_designatorFLANGE BLOCK
mounting_hole_typeROUND, THREADED
nominal_thread_size0.625 INCHES IN
bolt_circle_diameter10.875 INCHES NOMINAL IN
thread_tolerance_class2B INTERNAL
end_item_identification2350-01-087-1095 TANK,ARMORED,BATTLE,M1A1
overall_outside_diameter12.250 INCHES NOMINAL IN
NSN3130-01-063-5845
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 12274444 · 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
•
THREAD TOLERANCE CLASS: 2B INTERNAL
•
FLANGE THICKNESS: 0.620 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: ROUND, THREADED
•
STYLE DESIGNATOR: FLANGE BLOCK
•
OVERALL OUTSIDE DIAMETER: 12.250 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
BOLT CIRCLE DIAMETER: 10.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD TOLERANCE CLASS2B INTERNAL
FLANGE THICKNESS0.620 INCHES NOMINAL IN
MOUNTING HOLE TYPEROUND, THREADED
STYLE DESIGNATORFLANGE BLOCK
OVERALL OUTSIDE DIAMETER12.250 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.625 INCHES IN
BOLT CIRCLE DIAMETER10.875 INCHES NOMINAL IN
SPECIAL FEATURESBURRS AND SHARP EDGES REMOVED. QUENCHED AND TEMPERED TO HARDNESS 32/38 RC. THREADED MOUNTING HOLES FOR 2 EA 180 DEG APART. PERIPHERAL FLATS FOR 2 EA 180 DEG APART. RADII FOR 4 EA 90 DEG APART LOCATED AT INSIDE DIA TO DEPTHOF 0.310 IN NOM IN
TEST DATA DOCUMENT19207-12274444 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
END ITEM IDENTIFICATION2350-01-087-1095 TANK,ARMORED,BATTLE,M1A1
OTHER ITEMS IN FSC 3130 — Bearings, Mounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3130-00-001-5118 3130-00-001-5137 3130-00-001-6585 3130-00-003-0422 3130-00-003-0455 3130-00-003-0794 3130-00-003-2802 3130-00-003-9535
SUBSTITUTES & CROSS-REFERENCES 1
XM60202Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 12274444?
12274444 is a HOUSING,BEARING UNIT.
What parts can replace 12274444?
There is 1 known substitute for 12274444: XM60202. Substitute compatibility should be verified for your specific system.
What is the NSN for 12274444?
12274444 is cataloged in the U.S. Government catalog under NSN 3130-01-063-5845. 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.