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03A084-12L — WASHER,CONCAVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

03A084-12L: WASHER,CONCAVE.

The WASHER,CONCAVE is a the manufacturer industrial component. Key specifications include radius: 0.380 INCHES NOMINAL IN, material: STEEL COMP 630 OR STEEL COMP 631 OVERALL, hole_diameter: 0.490 INCHES NOMINAL IN, outside_diameter: 0.780 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN, style_designator: CONCAVE, surface_treatment: LUBRICANT OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-328-2049, 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
03A084-12L
NSN: 5310-01-328-2049
FSC: 5310 — Nuts and Washers
CAGE: 1W025 — NORTHROP GRUMMAN SYSTEMS CORP DBA NORTHROP GRUMMAN COMPUTING SYSTEMS (USA)
SPECIFICATIONS
radius0.380 INCHES NOMINAL IN
materialSTEEL COMP 630 OR STEEL COMP 631 OVERALL
hole_diameter0.490 INCHES NOMINAL IN
outside_diameter0.780 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
style_designatorCONCAVE
surface_treatmentLUBRICANT OVERALL
material_thickness0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
material_document_and_classificationAMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN5310-01-328-2049
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 03A084-12L · 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
•
RADIUS: 0.380 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CONCAVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.780 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
•
SURFACE TREATMENT: LUBRICANT OVERALL
•
MATERIAL: STEEL COMP 630 OR STEEL COMP 631 OVERALL
•
HOLE DIAMETER: 0.490 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
RADIUS0.380 INCHES NOMINAL IN
STYLE DESIGNATORCONCAVE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.780 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
MATERIAL THICKNESS0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
SURFACE TREATMENTLUBRICANT OVERALL
MATERIALSTEEL COMP 630 OR STEEL COMP 631 OVERALL
HOLE DIAMETER0.490 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
HL75-12DWSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 03A084-12L?
03A084-12L is a WASHER,CONCAVE.
What parts can replace 03A084-12L?
There is 1 known substitute for 03A084-12L: HL75-12DW. Substitute compatibility should be verified for your specific system.
What is the NSN for 03A084-12L?
03A084-12L is cataloged in the U.S. Government catalog under NSN 5310-01-328-2049. 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.