PartsTable
Technical Data Sheet
Download PDF

250A446 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

250A446: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPECIAL, usage_design: INTERNAL, inside_diameter: 4.000 INCHES NOMINAL IN, outside_diameter: 4.250 INCHES NOMINAL IN, material_diameter: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-449-0915, 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
250A446
NSN: 5325-00-449-0915
FSC: 5325 — Fastening Devices
CAGE: 23233 — JAY-EM AEROSPACE CORPORATION (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL
usage_designINTERNAL
inside_diameter4.000 INCHES NOMINAL IN
outside_diameter4.250 INCHES NOMINAL IN
material_diameter0.125 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
material_document_and_classificationMIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5325-00-449-0915
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 250A446 · 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: INTERNAL
•
MATERIAL DIAMETER: 0.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 4.250 INCHES NOMINAL IN
•
INSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: SPECIAL
TECHNICAL CHARACTERISTICS
USAGE DESIGNINTERNAL
MATERIAL DIAMETER0.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER4.250 INCHES NOMINAL IN
INSIDE DIAMETER4.000 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
5325PL2175865Reference document
Same NSN cross-reference
Reference document — Informative reference only
9520981Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 250A446?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 250A446?
250A446 is a RING,RETAINING.
What parts can replace 250A446?
There are 2 known substitutes for 250A446: 5325PL2175865, 9520981. Substitute compatibility should be verified for your specific system.
What is the NSN for 250A446?
250A446 is cataloged in the U.S. Government catalog under NSN 5325-00-449-0915. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 250A446

✓ 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.