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Technical Data Sheet
PartsTable / COMPONENT / WA528
WA528 ✓ 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, end_style: VERTEX BELOW CENTER, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.700 INCHES MINIMUM AND 0.722 INCHES MAXIMUM IN, major_thickness: 0.082 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-174-9856, 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
WA528
NSN: 5325-00-174-9856
FSC: 5325
CAGE: 20859 — MELLOWES CO DIV OF CHARTER MFG CO INC (USA)
SPECIFICATIONS
materialSTEEL
end_styleVERTEX BELOW CENTER
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.700 INCHES MINIMUM AND 0.722 INCHES MAXIMUM IN
major_thickness0.082 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
outside_diameter0.594 INCHES NOMINAL IN
special_featuresVULCANIZED FIBER MATERIAL O/A; LUBRICATION MATERIAL GRAPHITE
aperture_diameter0.378 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
surface_treatmentPHOSPHATE AND ZINC
casehardening_indicatorNOT CASEHARDENED
cross-sectional_thickness0.015 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
NSN5325-00-174-9856
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: WA528 · 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
•
INSIDE DIAMETER: 0.700 INCHES MINIMUM AND 0.722 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PHOSPHATE AND ZINC
•
MATERIAL: STEEL
•
MAJOR THICKNESS: 0.082 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
RING STYLE: STRAIGHT GAP
•
USAGE DESIGN: EXTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER0.700 INCHES MINIMUM AND 0.722 INCHES MAXIMUM IN
SURFACE TREATMENTPHOSPHATE AND ZINC
MATERIALSTEEL
MAJOR THICKNESS0.082 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
RING STYLESTRAIGHT GAP
USAGE DESIGNEXTERNAL
END STYLEVERTEX BELOW CENTER
OUTSIDE DIAMETER1.044 INCHES MINIMUM AND 1.066 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
50MS584Interchangeable
interchangeable cross-reference
interchangeable
1250-0001MSInterchangeable
interchangeable cross-reference
interchangeable
8198758Interchangeable
interchangeable cross-reference
interchangeable
110411Interchangeable
interchangeable cross-reference
interchangeable
1L10-F-155Interchangeable
interchangeable cross-reference
interchangeable
1L10F15SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WA528?
WA528 is a RING,RETAINING.
What parts can replace WA528?
There are 15 known substitutes for WA528: 50MS584, 1250-0001MS, 8198758 and 12 more. Substitute compatibility should be verified for your specific system.
Is WA528 still available?
WA528 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026