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337260 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

337260: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 5.750 INCHES MINIMUM AND 5.770 INCHES MAXIMUM IN, outside_diameter: 6.010 INCHES MINIMUM AND 6.030 INCHES MAXIMUM IN, material_thickness: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN, external_prebent_key_length: 0.190 INCHES NOMINAL IN, external_straight_key_width: 0.290 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-286-8356, 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
337260
NSN: 5310-00-286-8356
FSC: 5310 — Nuts and Washers
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter5.750 INCHES MINIMUM AND 5.770 INCHES MAXIMUM IN
outside_diameter6.010 INCHES MINIMUM AND 6.030 INCHES MAXIMUM IN
material_thickness0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
external_key_quantity5
internal_key_quantity1
external_prebent_key_length0.190 INCHES NOMINAL IN
external_straight_key_width0.290 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
internal_straight_key_width0.180 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
overall_distance_including_keys6.410 INCHES MINIMUM AND 6.470 INCHES MAXIMUM IN
material_document_and_classificationAMS 5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_inside_of_prebent_key2.936 INCHES MINIMUM AND 2.956 INCHES MAXIMUM IN
NSN5310-00-286-8356
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 337260 · 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: 0.180 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 2.936 INCHES MINIMUM AND 2.956 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.190 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 6.410 INCHES MINIMUM AND 6.470 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 6.010 INCHES MINIMUM AND 6.030 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.290 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.180 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY2.936 INCHES MINIMUM AND 2.956 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.190 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS6.410 INCHES MINIMUM AND 6.470 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER6.010 INCHES MINIMUM AND 6.030 INCHES MAXIMUM IN
MATERIAL THICKNESS0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.290 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY5
MATERIALSTEEL COMP 1010 OVERALL
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 337260?
337260 is a WASHER,KEY.
What is the NSN for 337260?
337260 is cataloged in the U.S. Government catalog under NSN 5310-00-286-8356. 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.