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PartsTable / COMPONENT / M21248 TY 3 CL 1
M21248 TY 3 CL 1 ✓ 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, ring_style: INTERNAL, usage_design: INTERNAL, major_thickness: 0.065 INCHES NOMINAL IN, strength_rating: ERR-060, outside_diameter: 2.025 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 5325-00-598-6334, 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
M21248 TY 3 CL 1
NSN: 5325-00-598-6334
FSC: 5325
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleINTERNAL
usage_designINTERNAL
major_thickness0.065 INCHES NOMINAL IN
strength_ratingERR-060
outside_diameter2.025 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleROUNDED CORNERS
material_document_and_classificationQQ-S-633, COMPOSITION C1060 TO C1070 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-00-598-6334
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M21248 TY 3 CL 1 · 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
•
OUTSIDE DIAMETER: 2.025 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
MAJOR THICKNESS: 0.065 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633, COMPOSITION C1060 TO C1070 FED SPEC SINGLE MATERIAL RESPONSE
•
RING STYLE: INTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: ROUNDED CORNERS
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER2.025 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
MAJOR THICKNESS0.065 INCHES NOMINAL IN
MATERIALSTEEL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633, COMPOSITION C1060 TO C1070 FED SPEC SINGLE MATERIAL RESPONSE
RING STYLEINTERNAL
CROSS-SECTIONAL SHAPE STYLEROUNDED CORNERS
STRENGTH RATINGERR-060
USAGE DESIGNINTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
R26347NInterchangeable
interchangeable cross-reference
interchangeable
R26347Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS7928Interchangeable
interchangeable cross-reference
interchangeable
323676Interchangeable
Same NIIN cross-reference
interchangeable
MIL-R-21248Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M21248 TY 3 CL 1?
M21248 TY 3 CL 1 is a RING,RETAINING.
What parts can replace M21248 TY 3 CL 1?
There are 5 known substitutes for M21248 TY 3 CL 1: R26347N, R26347, SAE-AS7928 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M21248 TY 3 CL 1?
M21248 TY 3 CL 1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-598-6334. 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