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MS172212 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS172212: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, hole_diameter: 2.182 INCHES MINIMUM AND 2.207 INCHES MAXIMUM IN, outside_diameter: 2.500 INCHES NOMINAL IN, style_designator: KEY, surface_treatment: PHOSPHATE OVERALL, material_thickness: 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-984-6907, 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
MS172212
NSN: 5310-00-984-6907
FSC: 5310 — Nuts and Washers
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
hole_diameter2.182 INCHES MINIMUM AND 2.207 INCHES MAXIMUM IN
outside_diameter2.500 INCHES NOMINAL IN
style_designatorKEY
surface_treatmentPHOSPHATE OVERALL
material_thickness0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
external_key_quantity18
external_prebent_key_width0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
internal_prebent_key_width0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
internal_prebent_key_length0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
overall_distance_including_keys2.953 INCHES NOMINAL IN
material_document_and_classificationAMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-984-6907
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS172212 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 2.953 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.500 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 18
•
INTERNAL PREBENT KEY LENGTH: 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS2.953 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY18
INTERNAL PREBENT KEY LENGTH0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
SURFACE TREATMENTPHOSPHATE OVERALL
EXTERNAL PREBENT KEY WIDTH0.204 INCHES MINIMUM AND 0.234 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 2
10392473Reference document
Same NSN cross-reference
Reference document — Informative reference only
5310PL0963277Reference 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 MS172212?
MS172212 is a WASHER,KEY.
What parts can replace MS172212?
There are 2 known substitutes for MS172212: 10392473, 5310PL0963277. Substitute compatibility should be verified for your specific system.
What is the NSN for MS172212?
MS172212 is cataloged in the U.S. Government catalog under NSN 5310-00-984-6907. 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.