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6053SR — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6053SR: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 3.008 INCHES MINIMUM AND 3.015 INCHES MAXIMUM IN, outside_diameter: 4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN, internal_straight_key_width: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-353-2402, 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
6053SR
NSN: 5310-00-353-2402
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter3.008 INCHES MINIMUM AND 3.015 INCHES MAXIMUM IN
outside_diameter4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN
special_featuresPUNCH 14 EQUALLY SPACED HOLES 0.328 INCH DIAMETER CENTER LINE OF FIRST HOLE MUST BE 6 DEGREES TO THE LEFT OF INTERNAL KEY CENTERLINE ON 3.750 INCH BOLT HOLE CIRCLE IN
style_designatorKEY
material_thickness0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
distance_from_centerline_to_top_of_internal_key1.3577 INCHES MINIMUM AND 1.3612 INCHES MAXIMUM IN
NSN5310-00-353-2402
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6053SR · 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: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 1.3577 INCHES MINIMUM AND 1.3612 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
INTERNAL KEY QUANTITY: 1
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY1.3577 INCHES MINIMUM AND 1.3612 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN
MATERIAL THICKNESS0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
SPECIAL FEATURESPUNCH 14 EQUALLY SPACED HOLES 0.328 INCH DIAMETER CENTER LINE OF FIRST HOLE MUST BE 6 DEGREES TO THE LEFT OF INTERNAL KEY CENTERLINE ON 3.750 INCH BOLT HOLE CIRCLE IN
MATERIALSTEEL OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER3.008 INCHES MINIMUM AND 3.015 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 1
T5373Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6053SR?
6053SR is a WASHER,KEY.
What parts can replace 6053SR?
There is 1 known substitute for 6053SR: T5373. Substitute compatibility should be verified for your specific system.
What is the NSN for 6053SR?
6053SR is cataloged in the U.S. Government catalog under NSN 5310-00-353-2402. 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.