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MS21242S10K — BEARING,PLAIN,ROD END

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

MS21242S10K: BEARING,PLAIN,ROD END.

The BEARING,PLAIN,ROD END is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 410 RACE INSERT, shank_style: EXTERNALLY THREADED, thread_class: 3A A, bore_diameter: 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN, overall_length: 3.3725 INCHES MINIMUM AND 3.4025 INCHES MAXIMUM IN, hardness_rating: 39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM ROD END BODY. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-014-8990, 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
MS21242S10K
NSN: 3120-01-014-8990
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 410 RACE INSERT
shank_styleEXTERNALLY THREADED
thread_class3A A
bore_diameter0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
overall_length3.3725 INCHES MINIMUM AND 3.4025 INCHES MAXIMUM IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM ROD END BODY
thread_diameter0.625 INCHES NOMINAL IN
special_featuresKEYWAY IN SHANK
style_designatorBALL TYPE
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE RACE INSERT
inner_member_width0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
NSN3120-01-014-8990
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MS21242S10K · 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
•
SHANK THREAD LENGTH: 1.5310 INCHES MINIMUM AND 1.5930 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE RACE INSERT
•
BORE CENTER TO SHANK END DISTANCE: 2.6150 INCHES MINIMUM AND 2.6350 INCHES MAXIMUM IN
•
INNER MEMBER WIDTH: 0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
•
HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM ROD END BODY
•
OUTER MEMBER WIDTH: 0.5720 INCHES MINIMUM AND 0.5820 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BALL TYPE
TECHNICAL CHARACTERISTICS
SHANK THREAD LENGTH1.5310 INCHES MINIMUM AND 1.5930 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE RACE INSERT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-46 TY 1 CL 1 FED SPEC SINGLE TREATMENT RESPONSE ROD END BODY
BORE CENTER TO SHANK END DISTANCE2.6150 INCHES MINIMUM AND 2.6350 INCHES MAXIMUM IN
INNER MEMBER WIDTH0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM ROD END BODY
OUTER MEMBER WIDTH0.5720 INCHES MINIMUM AND 0.5820 INCHES MAXIMUM IN
STYLE DESIGNATORBALL TYPE
THREAD DIAMETER0.625 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE OR AISI 410 ASSN STD 3RD MATERIAL RESPONSE RACE INSERT
SUBSTITUTES & CROSS-REFERENCES 6
AS81935Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-B-81935Reference document
Same NSN cross-reference
Reference document — Secondary reference
M81935/1-10KReference document
Same NSN cross-reference
Reference document — Secondary reference
AS81934/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
NAS537Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS81935/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is MS21242S10K?
MS21242S10K is a BEARING,PLAIN,ROD END.
What parts can replace MS21242S10K?
There are 6 known substitutes for MS21242S10K: AS81935, MIL-B-81935, M81935/1-10K and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21242S10K?
MS21242S10K is cataloged in the U.S. Government catalog under NSN 3120-01-014-8990. 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.