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91590A113 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91590A113: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 0.225 INCHES NOMINAL IN, special_features: THICKNESS .025, FOR SHAFT DIA .250, ROCKWELL HARDNESS IS C44-C51, TENSIL STRENGTH IS 225,000 PSI, part_name_assigned_by_controlling_agency: RETAINING RING. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-545-2039, 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
91590A113
NSN: 5325-01-545-2039
FSC: 5325 — Fastening Devices
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter0.225 INCHES NOMINAL IN
special_featuresTHICKNESS .025, FOR SHAFT DIA .250, ROCKWELL HARDNESS IS C44-C51, TENSIL STRENGTH IS 225,000 PSI
part_name_assigned_by_controlling_agencyRETAINING RING
NSN5325-01-545-2039
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91590A113 · 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
•
USAGE DESIGN: EXTERNAL
•
INSIDE DIAMETER: 0.225 INCHES NOMINAL IN
•
RING STYLE: EXTERNAL
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
INSIDE DIAMETER0.225 INCHES NOMINAL IN
RING STYLEEXTERNAL
SPECIAL FEATURESTHICKNESS .025, FOR SHAFT DIA .250, ROCKWELL HARDNESS IS C44-C51, TENSIL STRENGTH IS 225,000 PSI
PART NAME ASSIGNED BY CONTROLLING AGENCYRETAINING RING
MATERIALSTEEL CORROSION RESISTING
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 91590A113?
91590A113 is a RING,RETAINING.
What is the NSN for 91590A113?
91590A113 is cataloged in the U.S. Government catalog under NSN 5325-01-545-2039. 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.