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1246M — Technical Data Sheet

✓ 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

WRENCH,BOX AND OPEN END,COMBINAT. Key specifications include material: STEEL OVERALL, head_angle: 15.0 DEGREES NOMINAL, overall_length: 635.0 MILLIMETERS NOMINAL MM, style_designator: OFFSET, surface_treatment: CHROMIUM OVERALL, wrenching_surface_size: 46.0 MILLIMETERS NOMINAL BOTH ENDS MM. This part is cataloged in the Federal Logistics Information System under NSN 3120-00-339-5642, 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
1246M
NSN: 3120-00-339-5642
FSC: 3120
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_angle15.0 DEGREES NOMINAL
overall_length635.0 MILLIMETERS NOMINAL MM
style_designatorOFFSET
surface_treatmentCHROMIUM OVERALL
wrenching_surface_size46.0 MILLIMETERS NOMINAL BOTH ENDS MM
wrenching_surface_shapeOVAL FIRST END INTERNAL
wrenching_end_offset_angle15.0 DEGREES NOMINAL
nondefinitive_spec/std_data2 TYPE AND 4 CLASS AND D STYLE
specification/standard_data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN3120-00-339-5642
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 1246M · 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
•
DOCUMENT IDENTIFICATION: BM27253
•
DOCUMENT SOURCE: 15434
•
COMPONENT QUANTITY: 7
TECHNICAL CHARACTERISTICS
DOCUMENT IDENTIFICATIONBM27253
DOCUMENT SOURCE15434
COMPONENT QUANTITY7
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
AS954InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AS955InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
SH-568SInterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
3120003395642InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
FPBM27253InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1246M?
1246M is a WRENCH,BOX AND OPEN END,COMBINAT.
What parts can replace 1246M?
There are 5 known substitutes for 1246M: AS954, AS955, SH-568S and 2 more. Substitute compatibility should be verified for your specific system.
Is 1246M still available?
1246M is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026