PartsTable
Technical Data Sheet
Download PDF

12286991-3 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12286991-3: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.203 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN, outside_diameter: 0.414 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN, style_designator: 90 DEGREE LOCKING KEY, material_thickness: 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN, external_prebent_key_angle: 90.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-152-4738, 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
12286991-3
NSN: 5310-01-152-4738
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.203 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
outside_diameter0.414 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN
style_designator90 DEGREE LOCKING KEY
material_thickness0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
external_prebent_key_angle90.0 DEGREES NOMINAL
external_prebent_key_width0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
external_tapered_key_width0.104 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN
angle_between_external_keys58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM
external_prebent_key_length0.130 INCHES NOMINAL IN
distance_from_centerline_to_inside_of_prebent_key0.212 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN
NSN5310-01-152-4738
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12286991-3 · 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
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.212 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.130 INCHES NOMINAL IN
•
STYLE DESIGNATOR: 90 DEGREE LOCKING KEY
•
OUTSIDE DIAMETER: 0.414 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN
•
EXTERNAL TAPERED KEY WIDTH: 0.104 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY ANGLE: 90.0 DEGREES NOMINAL
•
EXTERNAL PREBENT KEY WIDTH: 0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.212 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.130 INCHES NOMINAL IN
STYLE DESIGNATOR90 DEGREE LOCKING KEY
OUTSIDE DIAMETER0.414 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN
EXTERNAL TAPERED KEY WIDTH0.104 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN
MATERIAL THICKNESS0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY ANGLE90.0 DEGREES NOMINAL
EXTERNAL PREBENT KEY WIDTH0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
INTERNAL KEY QUANTITY0
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
5310011524738Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 12286991-3?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 12286991-3?
12286991-3 is a WASHER,KEY.
What parts can replace 12286991-3?
There is 1 known substitute for 12286991-3: 5310011524738. Substitute compatibility should be verified for your specific system.
What is the NSN for 12286991-3?
12286991-3 is cataloged in the U.S. Government catalog under NSN 5310-01-152-4738. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 12286991-3

✓ 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.