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90177A219 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90177A219: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPIRAL, inside_diameter: 0.9375 INCHES NOMINAL IN, major_thickness: 0.1250 INCHES NOMINAL IN, outside_diameter: 1.1250 INCHES NOMINAL IN, surface_treatment: ZINC. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-271-1014, 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
90177A219
NSN: 5325-01-271-1014
FSC: 5325 — Fastening Devices
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPIRAL
inside_diameter0.9375 INCHES NOMINAL IN
major_thickness0.1250 INCHES NOMINAL IN
outside_diameter1.1250 INCHES NOMINAL IN
surface_treatmentZINC
end_item_identificationMRAP BUFFALO MK2A2
NSN5325-01-271-1014
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90177A219 · 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: 1.1250 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.1250 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.9375 INCHES NOMINAL IN
•
RING STYLE: SPIRAL
•
SURFACE TREATMENT: ZINC
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER1.1250 INCHES NOMINAL IN
MAJOR THICKNESS0.1250 INCHES NOMINAL IN
INSIDE DIAMETER0.9375 INCHES NOMINAL IN
RING STYLESPIRAL
SURFACE TREATMENTZINC
END ITEM IDENTIFICATIONMRAP BUFFALO MK2A2
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
2D62208PK-001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
500K2513Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90177A219?
90177A219 is a RING,RETAINING.
What parts can replace 90177A219?
There are 2 known substitutes for 90177A219: 2D62208PK-001, 500K2513. Substitute compatibility should be verified for your specific system.
What is the NSN for 90177A219?
90177A219 is cataloged in the U.S. Government catalog under NSN 5325-01-271-1014. 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.