PartsTable
Technical Data Sheet
Download PDF

12591366 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12591366: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 4.317 INCHES NOMINAL IN, outside_diameter: 5.505 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.255 INCHES NOMINAL IN, end_item_identification: M119A1 HOWITZER. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-342-0291, 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
12591366
NSN: 5310-01-342-0291
FSC: 5310 — Nuts and Washers
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter4.317 INCHES NOMINAL IN
outside_diameter5.505 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.255 INCHES NOMINAL IN
internal_key_quantity1
end_item_identificationM119A1 HOWITZER
internal_straight_key_width0.310 INCHES NOMINAL IN
distance_from_centerline_to_top_of_internal_key1.996 INCHES NOMINAL IN
NSN5310-01-342-0291
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12591366 · 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 STRAIGHT KEY WIDTH: 0.310 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 1.996 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 5.505 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.255 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
INTERNAL KEY QUANTITY: 1
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.310 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY1.996 INCHES NOMINAL IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER5.505 INCHES NOMINAL IN
MATERIAL THICKNESS0.255 INCHES NOMINAL IN
END ITEM IDENTIFICATIONM119A1 HOWITZER
MATERIALCOPPER ALLOY OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER4.317 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 12591366?
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 12591366?
12591366 is a WASHER,KEY.
What is the NSN for 12591366?
12591366 is cataloged in the U.S. Government catalog under NSN 5310-01-342-0291. 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 — 12591366

✓ 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.