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2579T2 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2579T2: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1025, end_style: D SHAP BELOW INSIDE PERIPHERY, ring_style: STRAIGHT GAP, usage_design: INTERNAL, inside_diameter: 1.875 INCHES NOMINAL IN, major_thickness: 0.060 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-706-1280, 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
2579T2
NSN: 5325-00-706-1280
FSC: 5325 — Fastening Devices
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL COMP 1025
end_styleD SHAP BELOW INSIDE PERIPHERY
ring_styleSTRAIGHT GAP
usage_designINTERNAL
inside_diameter1.875 INCHES NOMINAL IN
major_thickness0.060 INCHES NOMINAL IN
outside_diameter2.188 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 5077 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-706-1280
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2579T2 · 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: 42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM
•
USAGE DESIGN: INTERNAL
•
END STYLE: D SHAP BELOW INSIDE PERIPHERY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5077 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 2.188 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.060 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM
USAGE DESIGNINTERNAL
END STYLED SHAP BELOW INSIDE PERIPHERY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5077 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER2.188 INCHES NOMINAL IN
MAJOR THICKNESS0.060 INCHES NOMINAL IN
INSIDE DIAMETER1.875 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SUBSTITUTES & CROSS-REFERENCES 1
S987Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2579T2?
2579T2 is a RING,RETAINING.
What parts can replace 2579T2?
There is 1 known substitute for 2579T2: S987. Substitute compatibility should be verified for your specific system.
What is the NSN for 2579T2?
2579T2 is cataloged in the U.S. Government catalog under NSN 5325-00-706-1280. 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.