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Technical Data Sheet
PartsTable / COMPONENT / RST-293
RST-293 ✓ 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: SPIRAL, usage_design: EXTERNAL, inside_diameter: 2.750 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN, major_thickness: 0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN, strength_rating: ERR-060. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-928-9630, 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
RST-293
NSN: 5325-00-928-9630
FSC: 5325
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPIRAL
usage_designEXTERNAL
inside_diameter2.750 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN
major_thickness0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
strength_ratingERR-060
outside_diameter3.120 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleDOUBLE OVAL
material_document_and_classificationFED STD 66 AISI SAE 1070 THRU 1090 FED STD SINGLE MATERIAL RESPONSE
NSN5325-00-928-9630
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: RST-293 · 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: 3.120 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN
•
STRENGTH RATING: ERR-060
•
MATERIAL: STEEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66 AISI SAE 1070 THRU 1090 FED STD SINGLE MATERIAL RESPONSE
•
USAGE DESIGN: EXTERNAL
•
INSIDE DIAMETER: 2.750 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
MAJOR THICKNESS: 0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER3.120 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN
STRENGTH RATINGERR-060
MATERIALSTEEL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66 AISI SAE 1070 THRU 1090 FED STD SINGLE MATERIAL RESPONSE
USAGE DESIGNEXTERNAL
INSIDE DIAMETER2.750 INCHES MINIMUM AND 2.780 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
MAJOR THICKNESS0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
RING STYLESPIRAL
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
27237Interchangeable
interchangeable cross-reference
interchangeable
027237Interchangeable
interchangeable cross-reference
interchangeable
110-28375 ITEM 44Interchangeable
interchangeable cross-reference
interchangeable
2723Interchangeable
interchangeable cross-reference
interchangeable
31969Interchangeable
interchangeable cross-reference
interchangeable
WST-293Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RST-293?
RST-293 is a RING,RETAINING.
What parts can replace RST-293?
There are 6 known substitutes for RST-293: 27237, 027237, 110-28375 ITEM 44 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RST-293?
RST-293 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-928-9630. 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