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8866748 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8866748: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.375 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN, outside_diameter: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN, material_thickness: 0.042 INCHES NOMINAL IN, peening_key_length: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN, end_item_identification: MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-655-9668, 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
8866748
NSN: 5310-00-655-9668
FSC: 5310 — Nuts and Washers
CAGE: 19203 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV US ARMY RESEARCH, DEVELOPMENT AND ENGINEERING COMMAND ARMAMENT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.375 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
outside_diameter0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
material_thickness0.042 INCHES NOMINAL IN
peening_key_length0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
external_key_quantity3
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
external_straight_key_width0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
external_straight_key_length0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
overall_distance_including_keys1.250 INCHES NOMINAL IN
NSN5310-00-655-9668
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8866748 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
EXTERNAL STRAIGHT KEY LENGTH: 0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 1.250 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
•
PEENING KEY LENGTH: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.042 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 3
TECHNICAL CHARACTERISTICS
EXTERNAL STRAIGHT KEY LENGTH0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS1.250 INCHES NOMINAL IN
OUTSIDE DIAMETER0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
PEENING KEY LENGTH0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
MATERIAL THICKNESS0.042 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY3
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
MATERIALSTEEL OVERALL
HOLE DIAMETER0.375 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 4
10082560Reference document
Same NSN cross-reference
Reference document — Informative reference only
10863380Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5310PL0898702Reference document
Same NSN cross-reference
Reference document — Informative reference only
5310006559668Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8866748?
8866748 is a WASHER,KEY.
What parts can replace 8866748?
There are 4 known substitutes for 8866748: 10082560, 10863380, 5310PL0898702 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8866748?
8866748 is cataloged in the U.S. Government catalog under NSN 5310-00-655-9668. 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.