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Technical Data Sheet
PartsTable / COMPONENT / M27426-3166D
M27426-3166D ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, ring_style: SPECIAL FLAT, usage_design: INTERNAL, inside_diameter: 2.549 INCHES NOMINAL IN, major_thickness: 0.049 INCHES NOMINAL IN, outside_diameter: 2.865 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-491-4438, 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
M27426-3166D
NSN: 5325-01-491-4438
FSC: 5325
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleSPECIAL FLAT
usage_designINTERNAL
inside_diameter2.549 INCHES NOMINAL IN
major_thickness0.049 INCHES NOMINAL IN
outside_diameter2.865 INCHES NOMINAL IN
surface_treatmentPASSIVATE
cross-sectional_shape_styleDOUBLE OVAL
NSN5325-01-491-4438
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M27426-3166D · 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
•
MAJOR THICKNESS: 0.049 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
MATERIAL: STEEL CORROSION RESISTING
•
SURFACE TREATMENT: PASSIVATE
•
RING STYLE: SPECIAL FLAT
•
USAGE DESIGN: INTERNAL
•
INSIDE DIAMETER: 2.549 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.865 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR THICKNESS0.049 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
MATERIALSTEEL CORROSION RESISTING
SURFACE TREATMENTPASSIVATE
RING STYLESPECIAL FLAT
USAGE DESIGNINTERNAL
INSIDE DIAMETER2.549 INCHES NOMINAL IN
OUTSIDE DIAMETER2.865 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
M2742630260DInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-27426/3Interchangeable
interchangeable cross-reference
interchangeable
WH-1075Interchangeable
interchangeable cross-reference
interchangeable
69983S106Interchangeable
interchangeable cross-reference
interchangeable
RR-106SInterchangeable
interchangeable cross-reference
interchangeable
6748072-106Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M27426-3166D?
M27426-3166D is a RING,RETAINING.
What parts can replace M27426-3166D?
There are 19 known substitutes for M27426-3166D: M2742630260D, MIL-DTL-27426/3, WH-1075 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M27426-3166D?
M27426-3166D is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-491-4438. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026