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204-050-139-1 — WASHER,SADDLE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

204-050-139-1: WASHER,SADDLE.

The WASHER,SADDLE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hole_diameter: 0.440 INCHES NOMINAL IN, outside_diameter: 1.375 INCHES NOMINAL IN, thickness_at_bolt_hole: 0.100 INCHES NOMINAL IN, material_document_and_classification: QQ-A-268,T4,/CANCELLED/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-678-5451, 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
204-050-139-1
NSN: 5310-00-678-5451
FSC: 5310 — Nuts and Washers
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hole_diameter0.440 INCHES NOMINAL IN
outside_diameter1.375 INCHES NOMINAL IN
thickness_at_bolt_hole0.100 INCHES NOMINAL IN
material_document_and_classificationQQ-A-268,T4,/CANCELLED/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-678-5451
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 204-050-139-1 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-268,T4,/CANCELLED/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.375 INCHES NOMINAL IN
•
THICKNESS AT BOLT HOLE: 0.100 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 2024 OVERALL
•
HOLE DIAMETER: 0.440 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-268,T4,/CANCELLED/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.375 INCHES NOMINAL IN
THICKNESS AT BOLT HOLE0.100 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 2024 OVERALL
HOLE DIAMETER0.440 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 1
204-050-139-1-18436Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 204-050-139-1?
204-050-139-1 is a WASHER,SADDLE.
What parts can replace 204-050-139-1?
There is 1 known substitute for 204-050-139-1: 204-050-139-1-18436. Substitute compatibility should be verified for your specific system.
What is the NSN for 204-050-139-1?
204-050-139-1 is cataloged in the U.S. Government catalog under NSN 5310-00-678-5451. 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.