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M2742630163A — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

M2742630163A: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPECIAL FLAT, usage_design: INTERNAL, inside_diameter: 2.400 INCHES NOMINAL IN, major_thickness: 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN, outside_diameter: 2.736 INCHES MINIMUM AND 2.761 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-012-1027, 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
M2742630163A
NSN: 5325-01-012-1027
FSC: 5325 — Fastening Devices
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL FLAT
usage_designINTERNAL
inside_diameter2.400 INCHES NOMINAL IN
major_thickness0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
outside_diameter2.736 INCHES MINIMUM AND 2.761 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
cross-sectional_shape_styleDOUBLE OVAL
material_document_and_classificationMIL-S-46049 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5325-01-012-1027
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M2742630163A · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
•
USAGE DESIGN: INTERNAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-46049 MIL SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
OUTSIDE DIAMETER: 2.736 INCHES MINIMUM AND 2.761 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 2.400 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
USAGE DESIGNINTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-46049 MIL SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER2.736 INCHES MINIMUM AND 2.761 INCHES MAXIMUM IN
MAJOR THICKNESS0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
INSIDE DIAMETER2.400 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL FLAT
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 3
MIL-DTL-27426Reference document
Same NSN cross-reference
Reference document — Identification reference
RR-262Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
HS3014RR262Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M2742630163A?
M2742630163A is a RING,RETAINING.
What parts can replace M2742630163A?
There are 3 known substitutes for M2742630163A: MIL-DTL-27426, RR-262, HS3014RR262. Substitute compatibility should be verified for your specific system.
What is the NSN for M2742630163A?
M2742630163A is cataloged in the U.S. Government catalog under NSN 5325-01-012-1027. 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.