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Technical Data Sheet
PartsTable / COMPONENT / 54318-000
54318-000 ✓ 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: STEEL COMP 1020 OR STEEL COMP 1025 OVERALL, thickness: 0.086 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN, hole_diameter: 0.755 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN, overall_diameter: 1.307 INCHES MINIMUM AND 1.332 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-397-1776, 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
54318-000
NSN: 5310-01-397-1776
FSC: 5310
CAGE: U7887 — NP AEROSPACE LIMITED (GBR)
SPECIFICATIONS
materialSTEEL COMP 1020 OR STEEL COMP 1025 OVERALL
thickness0.086 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
hole_diameter0.755 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN
overall_diameter1.307 INCHES MINIMUM AND 1.332 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
specification/standard_data80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classificationMIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE OR ASTM A568 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-397-1776
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 54318-000 · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 1.307 INCHES MINIMUM AND 1.332 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE OR ASTM A568 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SPECIFICATION/STANDARD DATA: 80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HOLE DIAMETER: 0.755 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER1.307 INCHES MINIMUM AND 1.332 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE OR ASTM A568 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPECIFICATION/STANDARD DATA80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE DIAMETER0.755 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1020 OR STEEL COMP 1025 OVERALL
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
2206-08-00Interchangeable
interchangeable cross-reference
interchangeable
T-198-CInterchangeable
interchangeable cross-reference
interchangeable
1404S9MXInterchangeable
interchangeable cross-reference
interchangeable
905044Interchangeable
interchangeable cross-reference
interchangeable
12Z3010-514Interchangeable
interchangeable cross-reference
interchangeable
61888Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54318-000?
54318-000 is a WASHER,FLAT.
What parts can replace 54318-000?
There are 23 known substitutes for 54318-000: 2206-08-00, T-198-C, 1404S9MX and 20 more. Substitute compatibility should be verified for your specific system.
Is 54318-000 still available?
54318-000 is currently cancelled.
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Last verified: July 2026