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K-91512 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

K-91512: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 2.400 INCHES MINIMUM AND 2.425 INCHES MAXIMUM IN, heat_treatment: HOT ROLLED OR COLD ROLLED, outside_diameter: 3.735 INCHES MINIMUM AND 3.765 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.187 INCHES MINIMUM AND 0.207 INCHES MAXIMUM IN, internal_straight_key_width: 0.290 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-191-3153, 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
K-91512
NSN: 5310-01-191-3153
FSC: 5310 — Nuts and Washers
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
hole_diameter2.400 INCHES MINIMUM AND 2.425 INCHES MAXIMUM IN
heat_treatmentHOT ROLLED OR COLD ROLLED
outside_diameter3.735 INCHES MINIMUM AND 3.765 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.187 INCHES MINIMUM AND 0.207 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.290 INCHES MAXIMUM IN
material_document_and_classificationSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
distance_from_centerline_to_top_of_internal_key1.060 INCHES MAXIMUM IN
NSN5310-01-191-3153
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K-91512 · 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: 0.290 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 1.060 INCHES MAXIMUM IN
•
HEAT TREATMENT: HOT ROLLED OR COLD ROLLED
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 3.735 INCHES MINIMUM AND 3.765 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.187 INCHES MINIMUM AND 0.207 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.290 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY1.060 INCHES MAXIMUM IN
HEAT TREATMENTHOT ROLLED OR COLD ROLLED
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER3.735 INCHES MINIMUM AND 3.765 INCHES MAXIMUM IN
MATERIAL THICKNESS0.187 INCHES MINIMUM AND 0.207 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER2.400 INCHES MINIMUM AND 2.425 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

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
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FREQUENTLY ASKED QUESTIONS
What is K-91512?
K-91512 is a WASHER,KEY.
What is the NSN for K-91512?
K-91512 is cataloged in the U.S. Government catalog under NSN 5310-01-191-3153. 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.