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8351289 — WASHER,KEYWAY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8351289: WASHER,KEYWAY.

The WASHER,KEYWAY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1095 OVERALL, hole_diameter: 0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL C MINIMUM, outside_diameter: 1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN, material_thickness: 0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, external_keyway_width: 0.060 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-703-4066, 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
8351289
NSN: 5310-00-703-4066
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1095 OVERALL
hole_diameter0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL C MINIMUM
outside_diameter1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN
material_thickness0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
external_keyway_width0.060 INCHES NOMINAL IN
external_keyway_length0.015 INCHES NOMINAL IN
NSN5310-00-703-4066
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8351289 · 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 KEYWAY WIDTH: 0.060 INCHES NOMINAL IN
•
HARDNESS RATING: 50.0 ROCKWELL C MINIMUM
•
OUTSIDE DIAMETER: 1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1095 OVERALL
•
HOLE DIAMETER: 0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN
•
EXTERNAL KEYWAY LENGTH: 0.015 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
EXTERNAL KEYWAY WIDTH0.060 INCHES NOMINAL IN
HARDNESS RATING50.0 ROCKWELL C MINIMUM
OUTSIDE DIAMETER1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN
MATERIAL THICKNESS0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1095 OVERALL
HOLE DIAMETER0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN
EXTERNAL KEYWAY LENGTH0.015 INCHES NOMINAL 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 1
2520007034066Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 8351289?
8351289 is a WASHER,KEYWAY.
What parts can replace 8351289?
There is 1 known substitute for 8351289: 2520007034066. Substitute compatibility should be verified for your specific system.
What is the NSN for 8351289?
8351289 is cataloged in the U.S. Government catalog under NSN 5310-00-703-4066. 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.