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SP4300-93 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SP4300-93: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2014 OVERALL, thickness: 0.041 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN, hole_diameter: 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN, overall_diameter: 1.333 INCHES MINIMUM AND 1.353 INCHES MAXIMUM IN, surface_treatment: ANODIZE OR CHROMATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-271-3236, 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
SP4300-93
NSN: 5310-00-271-3236
FSC: 5310 — Nuts and Washers
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2014 OVERALL
thickness0.041 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN
hole_diameter0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
overall_diameter1.333 INCHES MINIMUM AND 1.353 INCHES MAXIMUM IN
surface_treatmentANODIZE OR CHROMATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-A-250/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationMIL-A-8625 TY 2,CL 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 CL 1A MIL SPEC 2ND TREATMENT RESPONSE OVERALL A
NSN5310-00-271-3236
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SP4300-93 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 TY 2,CL 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 CL 1A MIL SPEC 2ND TREATMENT RESPONSE OVERALL A
•
OVERALL DIAMETER: 1.333 INCHES MINIMUM AND 1.353 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: ANODIZE OR CHROMATE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: ALUMINUM ALLOY 2014 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 TY 2,CL 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 CL 1A MIL SPEC 2ND TREATMENT RESPONSE OVERALL A
OVERALL DIAMETER1.333 INCHES MINIMUM AND 1.353 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTANODIZE OR CHROMATE OVERALL
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALALUMINUM ALLOY 2014 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM 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
GW10U62AA3Same 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 SP4300-93?
SP4300-93 is a WASHER,FLAT.
What parts can replace SP4300-93?
There is 1 known substitute for SP4300-93: GW10U62AA3. Substitute compatibility should be verified for your specific system.
What is the NSN for SP4300-93?
SP4300-93 is cataloged in the U.S. Government catalog under NSN 5310-00-271-3236. 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.