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WSM-81-S02 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

WSM-81-S02: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include ring_style: SPIRAL FLAT, inside_diameter: 0.756 INCHES NOMINAL IN, major_thickness: 0.042 INCHES NOMINAL IN, outside_diameter: 0.821 INCHES NOMINAL IN, end_item_identification: B1, part_name_assigned_by_controlling_agency: RING, RETAINING. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-617-4890, 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
WSM-81-S02
NSN: 5325-01-617-4890
FSC: 5325 — Fastening Devices
CAGE: 51814 — SMALLEY STEEL RING CO. (USA)
SPECIFICATIONS
ring_styleSPIRAL FLAT
inside_diameter0.756 INCHES NOMINAL IN
major_thickness0.042 INCHES NOMINAL IN
outside_diameter0.821 INCHES NOMINAL IN
special_featuresGROOV DIA:0.762, GROOV WIDTH: 0.046, RING RADIAL WALL:0.065, NUMBER OF TURNS: 2, CRIMPED, RING SHEAR LBS: 4930 BASED ON SAFETY FACTOR OF 3
end_item_identificationB1
part_name_assigned_by_controlling_agencyRING, RETAINING
NSN5325-01-617-4890
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: WSM-81-S02 · 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: 0.821 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.042 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.756 INCHES NOMINAL IN
•
RING STYLE: SPIRAL FLAT
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.821 INCHES NOMINAL IN
MAJOR THICKNESS0.042 INCHES NOMINAL IN
INSIDE DIAMETER0.756 INCHES NOMINAL IN
RING STYLESPIRAL FLAT
SPECIAL FEATURESGROOV DIA:0.762, GROOV WIDTH: 0.046, RING RADIAL WALL:0.065, NUMBER OF TURNS: 2, CRIMPED, RING SHEAR LBS: 4930 BASED ON SAFETY FACTOR OF 3
PART NAME ASSIGNED BY CONTROLLING AGENCYRING, RETAINING
END ITEM IDENTIFICATIONB1
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is WSM-81-S02?
WSM-81-S02 is a RING,RETAINING.
What is the NSN for WSM-81-S02?
WSM-81-S02 is cataloged in the U.S. Government catalog under NSN 5325-01-617-4890. 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.