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PartsTable / COMPONENT / LS5984D5M
LS5984D5M ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, thickness: 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN, hole_diameter: 0.319 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN, overall_diameter: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN, surface_treatment: CHROMATE OR ANODIZE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-450-8021, 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
LS5984D5M
NSN: 5310-00-450-8021
FSC: 5310
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
thickness0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
hole_diameter0.319 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
overall_diameter0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
surface_treatmentCHROMATE OR ANODIZE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-A-250/5 T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/5 T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5310-00-450-8021
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: LS5984D5M · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/5 T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/5 T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
THICKNESS: 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
•
HOLE DIAMETER: 0.319 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMATE OR ANODIZE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/5 T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/5 T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
HOLE DIAMETER0.319 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE OR ANODIZE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
934Interchangeable
interchangeable cross-reference
interchangeable
163 INSULATORInterchangeable
interchangeable cross-reference
interchangeable
B35N4Interchangeable
interchangeable cross-reference
interchangeable
2834Interchangeable
interchangeable cross-reference
interchangeable
0920107Interchangeable
interchangeable cross-reference
interchangeable
T1009346Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LS5984D5M?
LS5984D5M is a WASHER,FLAT.
What parts can replace LS5984D5M?
There are 13 known substitutes for LS5984D5M: 934, 163 INSULATOR, B35N4 and 10 more. Substitute compatibility should be verified for your specific system.
Is LS5984D5M still available?
LS5984D5M is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026