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SK251-23 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SK251-23: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1060 OR STEEL COMP 1070, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 1.750 INCHES NOMINAL IN, major_thickness: 0.093 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-582-3793, 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
SK251-23
NSN: 5325-00-582-3793
FSC: 5325 — Fastening Devices
CAGE: 1X0J7 — VOLVO CONSTRUCTION EQUIPMENT NORTH AMERICA, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1060 OR STEEL COMP 1070
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter1.750 INCHES NOMINAL IN
major_thickness0.093 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
outside_diameter2.063 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM A576, COMP 1060 OR 1070 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-582-3793
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SK251-23 · 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: 43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
USAGE DESIGN: EXTERNAL
•
END STYLE: 90 DEGREE PARALLEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A576, COMP 1060 OR 1070 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 2.063 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.093 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 1.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
USAGE DESIGNEXTERNAL
END STYLE90 DEGREE PARALLEL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A576, COMP 1060 OR 1070 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER2.063 INCHES NOMINAL IN
MAJOR THICKNESS0.093 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
INSIDE DIAMETER1.750 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SUBSTITUTES & CROSS-REFERENCES 1
224028Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SK251-23?
SK251-23 is a RING,RETAINING.
What parts can replace SK251-23?
There is 1 known substitute for SK251-23: 224028. Substitute compatibility should be verified for your specific system.
What is the NSN for SK251-23?
SK251-23 is cataloged in the U.S. Government catalog under NSN 5325-00-582-3793. 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.