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TW103 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

TW103: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include outside_diameter: 0.938 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.058 INCHES NOMINAL IN, external_key_quantity: 11, overall_distance_including_keys: 1.344 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-281-3400, 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
TW103
NSN: 5310-01-281-3400
FSC: 5310 — Nuts and Washers
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
outside_diameter0.938 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.058 INCHES NOMINAL IN
external_key_quantity11
overall_distance_including_keys1.344 INCHES NOMINAL IN
NSN5310-01-281-3400
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: TW103 · 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
•
OVERALL DISTANCE INCLUDING KEYS: 1.344 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 0.938 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.058 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 11
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS1.344 INCHES NOMINAL IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER0.938 INCHES NOMINAL IN
MATERIAL THICKNESS0.058 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY11
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
2D3-1014 ITEM 17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 TW103?
TW103 is a WASHER,KEY.
What parts can replace TW103?
There is 1 known substitute for TW103: 2D3-1014 ITEM 17. Substitute compatibility should be verified for your specific system.
What is the NSN for TW103?
TW103 is cataloged in the U.S. Government catalog under NSN 5310-01-281-3400. 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.