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97633A290 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

97633A290: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 0.964 INCHES NOMINAL IN, major_thickness: 0.0422 INCHES MAXIMUM IN, outside_diameter: 1.029 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-620-7543, 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
97633A290
NSN: 5325-01-620-7543
FSC: 5325 — Fastening Devices
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter0.964 INCHES NOMINAL IN
major_thickness0.0422 INCHES MAXIMUM IN
outside_diameter1.029 INCHES MAXIMUM IN
special_featuresGROOVE DEPTH IS 0.029"
end_item_identificationMRAP - BUFFALO A1; MRAP BUFFALO MK2A2
material_hardness_rating40.0 ROCKWELL C MINIMUM
part_name_assigned_by_controlling_agencyRETAINING RING
NSN5325-01-620-7543
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 97633A290 · 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
•
MATERIAL HARDNESS RATING: 40.0 ROCKWELL C MINIMUM
•
USAGE DESIGN: EXTERNAL
•
OUTSIDE DIAMETER: 1.029 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.0422 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 0.964 INCHES NOMINAL IN
•
RING STYLE: EXTERNAL
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING40.0 ROCKWELL C MINIMUM
USAGE DESIGNEXTERNAL
OUTSIDE DIAMETER1.029 INCHES MAXIMUM IN
MAJOR THICKNESS0.0422 INCHES MAXIMUM IN
INSIDE DIAMETER0.964 INCHES NOMINAL IN
RING STYLEEXTERNAL
SPECIAL FEATURESGROOVE DEPTH IS 0.029"
PART NAME ASSIGNED BY CONTROLLING AGENCYRETAINING RING
END ITEM IDENTIFICATIONMRAP - BUFFALO A1; MRAP BUFFALO MK2A2
MATERIALSTEEL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 97633A290?
97633A290 is a RING,RETAINING.
What is the NSN for 97633A290?
97633A290 is cataloged in the U.S. Government catalog under NSN 5325-01-620-7543. 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.